diff --git a/.travis.yml b/.travis.yml
index 65b9f21ec2..90281b8fe4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 language: csharp
 sudo: false
 mono:
-  - 3.12.0
+  - alpha
 script:
-  - ./build.sh --quiet verify
\ No newline at end of file
+  - ./build.sh --quiet verify
diff --git a/test/Microsoft.AspNet.Mvc.Core.Test/ApplicationModel/DefaultApplicationModelProviderTest.cs b/test/Microsoft.AspNet.Mvc.Core.Test/ApplicationModel/DefaultApplicationModelProviderTest.cs
index 3ba65dbdcf..bfffb64a77 100644
--- a/test/Microsoft.AspNet.Mvc.Core.Test/ApplicationModel/DefaultApplicationModelProviderTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Core.Test/ApplicationModel/DefaultApplicationModelProviderTest.cs
@@ -726,11 +726,12 @@ namespace Microsoft.AspNet.Mvc.ApplicationModels
             // Assert
             Assert.Equal(2, actions.Count());
 
+            // OrderBy is used because the order of the results may very depending on the platform / client.
             var action = Assert.Single(actions, a => a.AttributeRouteModel.Template == "Products");
-            Assert.Equal<string>(new string[] { "GET", "POST" }, action.HttpMethods);
+            Assert.Equal(new [] { "GET", "POST" }, action.HttpMethods.OrderBy(key => key, StringComparer.Ordinal));
 
             action = Assert.Single(actions, a => a.AttributeRouteModel.Template == "v2/Products");
-            Assert.Equal<string>(new string[] { "GET", "POST" }, action.HttpMethods);
+            Assert.Equal(new [] { "GET", "POST" }, action.HttpMethods.OrderBy(key => key, StringComparer.Ordinal));
         }
 
         [Fact]
diff --git a/test/Microsoft.AspNet.Mvc.Core.Test/ModelBinding/ByteArrayModelBinderTests.cs b/test/Microsoft.AspNet.Mvc.Core.Test/ModelBinding/ByteArrayModelBinderTests.cs
index 939314bcb3..9a88a3673d 100644
--- a/test/Microsoft.AspNet.Mvc.Core.Test/ModelBinding/ByteArrayModelBinderTests.cs
+++ b/test/Microsoft.AspNet.Mvc.Core.Test/ModelBinding/ByteArrayModelBinderTests.cs
@@ -65,9 +65,7 @@ namespace Microsoft.AspNet.Mvc.ModelBinding.Test
         public async Task BindModelAddsModelErrorsOnInvalidCharacters()
         {
             // Arrange
-            var expected = TestPlatformHelper.IsMono ?
-                "Invalid length." :
-                "The value '\"Fys1\"' is not valid for foo.";
+            var expected = "The value '\"Fys1\"' is not valid for foo.";
 
             var valueProvider = new SimpleHttpValueProvider()
             {
diff --git a/test/Microsoft.AspNet.Mvc.Core.Test/ModelBinding/Validation/DefaultObjectValidatorTests.cs b/test/Microsoft.AspNet.Mvc.Core.Test/ModelBinding/Validation/DefaultObjectValidatorTests.cs
index 7c41f25e48..3ccac28d46 100644
--- a/test/Microsoft.AspNet.Mvc.Core.Test/ModelBinding/Validation/DefaultObjectValidatorTests.cs
+++ b/test/Microsoft.AspNet.Mvc.Core.Test/ModelBinding/Validation/DefaultObjectValidatorTests.cs
@@ -106,7 +106,7 @@ namespace Microsoft.AspNet.Mvc.ModelBinding.Validation
                 if (!TestPlatformHelper.IsMono)
                 {
                     // In Mono this throws a NullRef Exception.
-                    // Should be investigated - https://github.com/aspnet/Mvc/issues/1261
+                    // https://github.com/aspnet/External/issues/23
                     yield return new object[]
                     {
                         new Dictionary<string, Person> { { "Joe", new Person() } , { "Mark", new Person() } },
@@ -275,10 +275,15 @@ namespace Microsoft.AspNet.Mvc.ModelBinding.Validation
                     typeof(Uri),
                     new List<Type>() { typeof(Uri) }
                 };
-                yield return new object[] { new Dictionary<string, Uri> {
-                    { "values",  new Uri("/api/values", UriKind.Relative) },
-                    { "hello",  new Uri("/api/hello", UriKind.Relative) }
-                }, typeof(Dictionary<string, Uri>), new List<Type>() { typeof(Uri) } };
+
+                // https://github.com/aspnet/External/issues/23
+                if (!TestPlatformHelper.IsMono)
+                {
+                    yield return new object[] { new Dictionary<string, Uri> {
+                        { "values",  new Uri("/api/values", UriKind.Relative) },
+                        { "hello",  new Uri("/api/hello", UriKind.Relative) }
+                    }, typeof(Dictionary<string, Uri>), new List<Type>() { typeof(Uri) } };
+                }
             }
         }
 
diff --git a/test/Microsoft.AspNet.Mvc.Core.Test/ModelBindingHelperTest.cs b/test/Microsoft.AspNet.Mvc.Core.Test/ModelBindingHelperTest.cs
index 4b67017478..87018515af 100644
--- a/test/Microsoft.AspNet.Mvc.Core.Test/ModelBindingHelperTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Core.Test/ModelBindingHelperTest.cs
@@ -10,7 +10,6 @@ using System.Threading.Tasks;
 using Microsoft.AspNet.Http;
 using Microsoft.AspNet.Mvc.ModelBinding;
 using Microsoft.AspNet.Mvc.ModelBinding.Validation;
-using Microsoft.AspNet.Testing;
 using Moq;
 using Xunit;
 
@@ -51,8 +50,8 @@ namespace Microsoft.AspNet.Mvc.Test
         public async Task TryUpdateModel_ReturnsFalse_IfModelValidationFails()
         {
             // Arrange
-            var expectedMessage = TestPlatformHelper.IsMono ? "The field MyProperty is invalid." :
-                                                               "The MyProperty field is required.";
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expectedMessage = PlatformNormalizer.NormalizeContent("The MyProperty field is required.");
             var binders = new IModelBinder[]
             {
                 new TypeConverterModelBinder(),
diff --git a/test/Microsoft.AspNet.Mvc.Core.Test/ObjectResultTests.cs b/test/Microsoft.AspNet.Mvc.Core.Test/ObjectResultTests.cs
index b7278044af..e5ded90190 100644
--- a/test/Microsoft.AspNet.Mvc.Core.Test/ObjectResultTests.cs
+++ b/test/Microsoft.AspNet.Mvc.Core.Test/ObjectResultTests.cs
@@ -11,6 +11,7 @@ using Microsoft.AspNet.Http;
 using Microsoft.AspNet.Http.Internal;
 using Microsoft.AspNet.Mvc.Xml;
 using Microsoft.AspNet.Routing;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.AspNet.WebUtilities;
 using Microsoft.Framework.DependencyInjection;
 using Microsoft.Framework.Logging;
@@ -583,7 +584,9 @@ namespace Microsoft.AspNet.Mvc.Core.Test.ActionResults
             response.VerifySet(resp => resp.ContentType = expectedResponseContentType);
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8",
             "application/xml; charset=utf-8")] // Chrome & Opera
         [InlineData("text/html, application/xhtml+xml, */*",
@@ -621,7 +624,9 @@ namespace Microsoft.AspNet.Mvc.Core.Test.ActionResults
             response.VerifySet(resp => resp.ContentType = expectedResponseContentType);
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("application/xml;q=0.9,text/plain;q=0.5", "application/xml; charset=utf-8", false)]
         [InlineData("application/xml;q=0.9,*/*;q=0.5", "application/json; charset=utf-8", false)]
         [InlineData("application/xml;q=0.9,text/plain;q=0.5", "application/xml; charset=utf-8", true)]
diff --git a/test/Microsoft.AspNet.Mvc.Extensions.Test/FilePathResultTest.cs b/test/Microsoft.AspNet.Mvc.Extensions.Test/FilePathResultTest.cs
index 20b5cded96..3c887f4d1a 100644
--- a/test/Microsoft.AspNet.Mvc.Extensions.Test/FilePathResultTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Extensions.Test/FilePathResultTest.cs
@@ -10,6 +10,7 @@ using Microsoft.AspNet.Hosting;
 using Microsoft.AspNet.Http.Features;
 using Microsoft.AspNet.Http.Internal;
 using Microsoft.AspNet.Routing;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Microsoft.Net.Http.Headers;
 using Moq;
@@ -30,7 +31,9 @@ namespace Microsoft.AspNet.Mvc
             Assert.Equal(path, result.FileName);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // https://github.com/aspnet/Mvc/issues/2727
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ExecuteResultAsync_FallsbackToStreamCopy_IfNoIHttpSendFilePresent()
         {
             // Arrange
@@ -85,7 +88,9 @@ namespace Microsoft.AspNet.Mvc
             Assert.Equal("FilePathResultTestFile contents", contents);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // https://github.com/aspnet/Mvc/issues/2727
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ExecuteResultAsync_CallsSendFileAsync_IfIHttpSendFilePresent()
         {
             // Arrange
@@ -113,7 +118,9 @@ namespace Microsoft.AspNet.Mvc
             sendFileMock.Verify();
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // https://github.com/aspnet/Mvc/issues/2727
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ExecuteResultAsync_SetsSuppliedContentTypeAndEncoding()
         {
             // Arrange
@@ -143,7 +150,9 @@ namespace Microsoft.AspNet.Mvc
             Assert.Equal(expectedContentType, httpContext.Response.ContentType);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // https://github.com/aspnet/Mvc/issues/2727
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ExecuteResultAsync_WorksWithAbsolutePaths_UsingBackSlash()
         {
             // Arrange
@@ -174,7 +183,9 @@ namespace Microsoft.AspNet.Mvc
             Assert.Equal("FilePathResultTestFile contents", contents);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // https://github.com/aspnet/Mvc/issues/2727
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ExecuteResultAsync_WorksWithAbsolutePaths_UsingForwardSlash()
         {
             // Arrange
@@ -434,7 +445,9 @@ namespace Microsoft.AspNet.Mvc
             Assert.Equal(path, normalizedPath);
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // https://github.com/aspnet/Mvc/issues/2727
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("C:\\Folder\\SubFolder\\File.txt")]
         [InlineData("C:/Folder/SubFolder/File.txt")]
         [InlineData("\\\\NetworkLocation\\Folder\\SubFolder\\File.txt")]
@@ -454,7 +467,9 @@ namespace Microsoft.AspNet.Mvc
             Assert.True(isRooted);
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // https://github.com/aspnet/Mvc/issues/2727
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("FilePathResultTestFile.txt")]
         [InlineData("/FilePathResultTestFile.txt")]
         [InlineData("\\FilePathResultTestFile.txt")]
diff --git a/test/Microsoft.AspNet.Mvc.Extensions.Test/JsonOutputFormatterTests.cs b/test/Microsoft.AspNet.Mvc.Extensions.Test/JsonOutputFormatterTests.cs
index 4cf83dc3ed..a404393b94 100644
--- a/test/Microsoft.AspNet.Mvc.Extensions.Test/JsonOutputFormatterTests.cs
+++ b/test/Microsoft.AspNet.Mvc.Extensions.Test/JsonOutputFormatterTests.cs
@@ -8,6 +8,7 @@ using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Http;
 using Microsoft.AspNet.Http.Internal;
+using Microsoft.AspNet.Testing;
 using Microsoft.Net.Http.Headers;
 using Moq;
 using Newtonsoft.Json;
@@ -133,15 +134,22 @@ namespace Microsoft.AspNet.Mvc.Core.Test.Formatters
         {
             get
             {
-                return new TheoryData<string, string, bool>
+                var data = new TheoryData<string, string, bool>
                 {
                     { "This is a test 激光這兩個字是甚麼意思 string written using utf-8", "utf-8", true },
                     { "This is a test 激光這兩個字是甚麼意思 string written using utf-16", "utf-16", true },
                     { "This is a test 激光這兩個字是甚麼意思 string written using utf-32", "utf-32", false },
                     { "This is a test 激光這兩個字是甚麼意思 string written using shift_jis", "shift_jis", false },
                     { "This is a test æøå string written using iso-8859-1", "iso-8859-1", false },
-                    { "This is a test 레이저 단어 뜻 string written using iso-2022-kr", "iso-2022-kr", false },
                 };
+
+                if (!TestPlatformHelper.IsMono)
+                {
+                    // Mono issue - https://github.com/aspnet/External/issues/28
+                    data.Add("This is a test 레이저 단어 뜻 string written using iso-2022-kr", "iso-2022-kr", false);
+                }
+
+                return data;
             }
         }
 
diff --git a/test/Microsoft.AspNet.Mvc.Extensions.Test/JsonResultTest.cs b/test/Microsoft.AspNet.Mvc.Extensions.Test/JsonResultTest.cs
index cd5d36b50c..e22edf33f3 100644
--- a/test/Microsoft.AspNet.Mvc.Extensions.Test/JsonResultTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Extensions.Test/JsonResultTest.cs
@@ -2,6 +2,7 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
+using System.Collections.Generic;
 using System.IO;
 using System.Text;
 using System.Threading.Tasks;
@@ -20,9 +21,6 @@ namespace Microsoft.AspNet.Mvc
         private static readonly byte[] _abcdUTF8Bytes
             = new byte[] { 123, 34, 102, 111, 111, 34, 58, 34, 97, 98, 99, 100, 34, 125 };
 
-        private static readonly byte[] _abcdIndentedUTF8Bytes
-            = new byte[] { 123, 13, 10, 32, 32, 34, 102, 111, 111, 34, 58, 32, 34, 97, 98, 99, 100, 34, 13, 10, 125 };
-
         [Fact]
         public async Task ExecuteResultAsync_UsesDefaultContentType_IfNoContentTypeSpecified()
         {
@@ -88,11 +86,25 @@ namespace Microsoft.AspNet.Mvc
             Assert.Equal("text/json; charset=us-ascii", context.Response.ContentType);
         }
 
+        private static List<byte> AbcdIndentedUTF8Bytes
+        {
+            get
+            {
+                var bytes = new List<byte>();
+                bytes.Add(123);
+                bytes.AddRange(Encoding.UTF8.GetBytes(Environment.NewLine));
+                bytes.AddRange(new byte[] { 32, 32, 34, 102, 111, 111, 34, 58, 32, 34, 97, 98, 99, 100, 34 });
+                bytes.AddRange(Encoding.UTF8.GetBytes(Environment.NewLine));
+                bytes.Add(125);
+                return bytes;
+            }
+        }
+
         [Fact]
         public async Task ExecuteResultAsync_UsesPassedInSerializerSettings()
         {
             // Arrange
-            var expected = _abcdIndentedUTF8Bytes;
+            var expected = AbcdIndentedUTF8Bytes;
 
             var context = GetHttpContext();
             var actionContext = new ActionContext(context, new RouteData(), new ActionDescriptor());
diff --git a/test/Microsoft.AspNet.Mvc.Extensions.Test/ModelBinding/Metadata/DataAnnotationsMetadataProviderTest.cs b/test/Microsoft.AspNet.Mvc.Extensions.Test/ModelBinding/Metadata/DataAnnotationsMetadataProviderTest.cs
index a9f6e83d94..1e2ca5c69e 100644
--- a/test/Microsoft.AspNet.Mvc.Extensions.Test/ModelBinding/Metadata/DataAnnotationsMetadataProviderTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Extensions.Test/ModelBinding/Metadata/DataAnnotationsMetadataProviderTest.cs
@@ -4,6 +4,7 @@
 using System;
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
+using System.Linq;
 using Microsoft.AspNet.Mvc.ModelBinding.Validation;
 using Xunit;
 
@@ -538,7 +539,10 @@ namespace Microsoft.AspNet.Mvc.ModelBinding.Metadata
             provider.GetDisplayMetadata(context);
 
             // Assert
-            Assert.Equal(expectedKeyValuePairs, context.DisplayMetadata.EnumDisplayNamesAndValues);
+            // OrderBy is used because the order of the results may very depending on the platform / client.
+            Assert.Equal(
+                expectedKeyValuePairs?.OrderBy(item => item.Key, StringComparer.Ordinal),
+                context.DisplayMetadata.EnumDisplayNamesAndValues?.OrderBy(item => item.Key, StringComparer.Ordinal));
         }
 
         [Fact]
diff --git a/test/Microsoft.AspNet.Mvc.Extensions.Test/ModelBinding/Validation/CompareAttributeAdapterTest.cs b/test/Microsoft.AspNet.Mvc.Extensions.Test/ModelBinding/Validation/CompareAttributeAdapterTest.cs
index c96e5e94a5..c33d836551 100644
--- a/test/Microsoft.AspNet.Mvc.Extensions.Test/ModelBinding/Validation/CompareAttributeAdapterTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Extensions.Test/ModelBinding/Validation/CompareAttributeAdapterTest.cs
@@ -31,7 +31,11 @@ namespace Microsoft.AspNet.Mvc.ModelBinding.Validation
 
             // Assert
             var rule = Assert.Single(rules);
-            Assert.Equal("'MyPropertyDisplayName' and 'OtherPropertyDisplayName' do not match.", rule.ErrorMessage);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(
+                PlatformNormalizer.NormalizeContent(
+                    "'MyPropertyDisplayName' and 'OtherPropertyDisplayName' do not match."),
+                rule.ErrorMessage);
         }
 
         [Fact]
@@ -52,7 +56,10 @@ namespace Microsoft.AspNet.Mvc.ModelBinding.Validation
 
             // Assert
             var rule = Assert.Single(rules);
-            Assert.Equal("'MyProperty' and 'OtherProperty' do not match.", rule.ErrorMessage);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(
+                PlatformNormalizer.NormalizeContent("'MyProperty' and 'OtherProperty' do not match."),
+                rule.ErrorMessage);
         }
 
         [Fact]
diff --git a/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/DefaultEditorTemplatesTest.cs b/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/DefaultEditorTemplatesTest.cs
index 997c8ae3ec..88b650aa25 100644
--- a/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/DefaultEditorTemplatesTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/DefaultEditorTemplatesTest.cs
@@ -589,12 +589,13 @@ Environment.NewLine;
         public void Editor_FindsCorrectDateOrTimeTemplate(string dataTypeName, string editFormatString, string expected)
         {
             // Arrange
-            var expectedInput =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expectedInput = PlatformNormalizer.NormalizeContent(
                 "<input class=\"HtmlEncode[[text-box single-line]]\" data-val=\"HtmlEncode[[true]]\" " +
                 "data-val-required=\"HtmlEncode[[The DateTimeOffset field is required.]]\" id=\"HtmlEncode[[FieldPrefix]]\" " +
                 "name=\"HtmlEncode[[FieldPrefix]]\" type=\"HtmlEncode[[" +
                 dataTypeName + 
-                "]]\" value=\"HtmlEncode[[" + expected + "]]\" />";
+                "]]\" value=\"HtmlEncode[[" + expected + "]]\" />");
 
             var offset = TimeSpan.FromHours(0);
             var model = new DateTimeOffset(
@@ -641,12 +642,13 @@ Environment.NewLine;
         public void Editor_AppliesRfc3339(string dataTypeName, string editFormatString, string expected)
         {
             // Arrange
-            var expectedInput =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expectedInput = PlatformNormalizer.NormalizeContent(
                 "<input class=\"HtmlEncode[[text-box single-line]]\" data-val=\"HtmlEncode[[true]]\" " +
-                "data-val-required=\"HtmlEncode[[The DateTimeOffset field is required.]]\" id=\"HtmlEncode[[FieldPrefix]]\" " + 
+                "data-val-required=\"HtmlEncode[[The DateTimeOffset field is required.]]\" id=\"HtmlEncode[[FieldPrefix]]\" " +
                 "name=\"HtmlEncode[[FieldPrefix]]\" type=\"HtmlEncode[[" +
                 dataTypeName + 
-                "]]\" value=\"HtmlEncode[[" + expected + "]]\" />";
+                "]]\" value=\"HtmlEncode[[" + expected + "]]\" />");
 
             // Place DateTime-local value in current timezone.
             var offset = string.Equals("", dataTypeName) ? DateTimeOffset.Now.Offset : TimeSpan.FromHours(0);
@@ -698,12 +700,13 @@ Environment.NewLine;
         public void Editor_AppliesNonDefaultEditFormat(string dataTypeName, Html5DateRenderingMode renderingMode)
         {
             // Arrange
-            var expectedInput = 
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expectedInput = PlatformNormalizer.NormalizeContent(
                 "<input class=\"HtmlEncode[[text-box single-line]]\" data-val=\"HtmlEncode[[true]]\" " +
                 "data-val-required=\"HtmlEncode[[The DateTimeOffset field is required.]]\" id=\"HtmlEncode[[FieldPrefix]]\" " +
                 "name=\"HtmlEncode[[FieldPrefix]]\" type=\"HtmlEncode[[" +
                 dataTypeName + 
-                "]]\" value=\"HtmlEncode[[Formatted as 2000-01-02T03:04:05.0600000+00:00]]\" />";
+                "]]\" value=\"HtmlEncode[[Formatted as 2000-01-02T03:04:05.0600000+00:00]]\" />");
 
             var offset = TimeSpan.FromHours(0);
             var model = new DateTimeOffset(
diff --git a/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/HtmlHelperCheckboxTest.cs b/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/HtmlHelperCheckboxTest.cs
index bc7b08458f..3fbb87512b 100644
--- a/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/HtmlHelperCheckboxTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/HtmlHelperCheckboxTest.cs
@@ -17,11 +17,12 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxOverridesCalculatedValuesWithValuesFromHtmlAttributes()
         {
             // Arrange
-            var expected =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
                 @"<input checked=""HtmlEncode[[checked]]"" data-val=""HtmlEncode[[true]]"" " +
                 @"data-val-required=""HtmlEncode[[The Boolean field is required.]]"" id=""HtmlEncode[[Property3]]"" " +
                 @"name=""HtmlEncode[[Property3]]"" type=""HtmlEncode[[checkbox]]"" " +
-                @"value=""HtmlEncode[[false]]"" /><input name=""HtmlEncode[[Property3]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
+                @"value=""HtmlEncode[[false]]"" /><input name=""HtmlEncode[[Property3]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetTestModelViewData());
 
             // Act
@@ -37,11 +38,12 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxExplicitParametersOverrideDictionary_ForValueInModel()
         {
             // Arrange
-            var expected =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
                 @"<input checked=""HtmlEncode[[checked]]"" data-val=""HtmlEncode[[true]]"" " +
                 @"data-val-required=""HtmlEncode[[The Boolean field is required.]]"" id=""HtmlEncode[[Property3]]"" " +
                 @"name=""HtmlEncode[[Property3]]"" type=""HtmlEncode[[checkbox]]"" " +
-                @"value=""HtmlEncode[[false]]"" /><input name=""HtmlEncode[[Property3]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
+                @"value=""HtmlEncode[[false]]"" /><input name=""HtmlEncode[[Property3]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
 
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetTestModelViewData());
 
@@ -88,11 +90,12 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxCheckedWithOnlyName_GeneratesExpectedValue()
         {
             // Arrange
-            var expected =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
                 @"<input checked=""HtmlEncode[[checked]]"" data-val=""HtmlEncode[[true]]"" " +
                 @"data-val-required=""HtmlEncode[[The Boolean field is required.]]"" id=""HtmlEncode[[Property1]]"" " +
                 @"name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[checkbox]]"" " +
-                @"value=""HtmlEncode[[true]]"" /><input name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
+                @"value=""HtmlEncode[[true]]"" /><input name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetTestModelViewData());
 
             // Act
@@ -106,10 +109,11 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxUsesAttemptedValueFromModelState()
         {
             // Arrange
-            var expected =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
                 @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Boolean field is required.]]"" " +
                 @"id=""HtmlEncode[[Property1]]"" name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" />" +
-                @"<input name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
+                @"<input name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
             var valueProviderResult = new ValueProviderResult("false", "false", CultureInfo.InvariantCulture);
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetTestModelViewData());
             helper.ViewData.ModelState.SetModelValue("Property1", valueProviderResult);
@@ -289,9 +293,11 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxGeneratesUnobtrusiveValidationAttributes()
         {
             // Arrange
-            var expected = @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Name field is required.]]"" id=""HtmlEncode[[Name]]""" +
-                           @" name=""HtmlEncode[[Name]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" />" +
-                           @"<input name=""HtmlEncode[[Name]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
+                @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Name field is required.]]"" id=""HtmlEncode[[Name]]""" +
+                @" name=""HtmlEncode[[Name]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" />" +
+                @"<input name=""HtmlEncode[[Name]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetModelWithValidationViewData());
 
             // Act
@@ -305,12 +311,13 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxReplacesUnderscoresInHtmlAttributesWithDashes()
         {
             // Arrange
-            var expected =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
                 @"<input checked=""HtmlEncode[[checked]]"" data-val=""HtmlEncode[[true]]"" " +
                 @"data-val-required=""HtmlEncode[[The Boolean field is required.]]"" id=""HtmlEncode[[Property1]]"" " +
                 @"name=""HtmlEncode[[Property1]]"" Property1-Property3=""HtmlEncode[[Property3ObjValue]]"" " +
                 @"type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" /><input " +
-                @"name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
+                @"name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetTestModelViewData());
             var htmlAttributes = new { Property1_Property3 = "Property3ObjValue" };
 
@@ -363,11 +370,12 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxInTemplate_WithEmptyExpression_GeneratesExpectedValue()
         {
             // Arrange
-            var expected =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
                 @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Boolean field is required.]]"" " +
                 @"id=""HtmlEncode[[MyPrefix]]"" name=""HtmlEncode[[MyPrefix]]"" Property3=""HtmlEncode[[Property3Value]]"" " +
                 @"type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" /><input name=""HtmlEncode[[MyPrefix]]"" type=""HtmlEncode[[hidden]]"" " +
-                @"value=""HtmlEncode[[false]]"" />";
+                @"value=""HtmlEncode[[false]]"" />");
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(model: false);
             var attributes = new Dictionary<string, object> { { "Property3", "Property3Value" } };
             helper.ViewContext.ViewData.TemplateInfo.HtmlFieldPrefix = "MyPrefix";
@@ -383,12 +391,13 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxWithComplexExpressionsEvaluatesValuesInViewDataDictionary()
         {
             // Arrange
-            var expected =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
                 @"<input checked=""HtmlEncode[[checked]]"" data-val=""HtmlEncode[[true]]"" " +
                 @"data-val-required=""HtmlEncode[[The Boolean field is required.]]"" id=""HtmlEncode[[ComplexProperty_Property1]]"" " +
                 @"name=""HtmlEncode[[ComplexProperty." +
                 @"Property1]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" /><input name=""HtmlEncode[[ComplexProperty.Property1]]""" +
-                @" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
+                @" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetModelWithValidationViewData());
 
             // Act
@@ -402,10 +411,11 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxForWithNullContainer_TreatsBooleanAsFalse()
         {
             // Arrange
-            var expected =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
                 @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property1 field is required.]]"" " +
                 @"id=""HtmlEncode[[Property1]]"" name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" />" +
-                @"<input name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
+                @"<input name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
             var viewData = GetTestModelViewData();
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(viewData);
             var valueProviderResult = new ValueProviderResult("false", "false", CultureInfo.InvariantCulture);
@@ -424,10 +434,11 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxForWithNonNullContainer_UsesPropertyValue(bool value, string expectedChecked)
         {
             // Arrange
-            var expected =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
                 @"<input {0}data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property1 field is required.]]"" " +
                 @"id=""HtmlEncode[[Property1]]"" name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" />" +
-                @"<input name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
+                @"<input name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
             expected = string.Format(expected, expectedChecked);
 
             var viewData = GetTestModelViewData();
@@ -449,11 +460,12 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxForOverridesCalculatedParametersWithValuesFromHtmlAttributes()
         {
             // Arrange
-            var expected =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
                 @"<input checked=""HtmlEncode[[checked]]"" data-val=""HtmlEncode[[true]]"" " +
                 @"data-val-required=""HtmlEncode[[The Property3 field is required.]]"" " +
                 @"id=""HtmlEncode[[Property3]]"" name=""HtmlEncode[[Property3]]"" type=""HtmlEncode[[checkbox]]"" " +
-                @"value=""HtmlEncode[[false]]"" /><input name=""HtmlEncode[[Property3]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
+                @"value=""HtmlEncode[[false]]"" /><input name=""HtmlEncode[[Property3]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetTestModelViewData());
 
             // Act
@@ -467,9 +479,11 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxForGeneratesUnobtrusiveValidationAttributes()
         {
             // Arrange
-            var expected = @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Name field is required.]]"" id=""HtmlEncode[[Name]]""" +
-                           @" name=""HtmlEncode[[Name]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" />" +
-                           @"<input name=""HtmlEncode[[Name]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
+                @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Name field is required.]]"" id=""HtmlEncode[[Name]]""" +
+                @" name=""HtmlEncode[[Name]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" />" +
+                @"<input name=""HtmlEncode[[Name]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
             var metadataProvider = TestModelMetadataProvider.CreateDefaultProvider();
             var viewDataDictionary = new ViewDataDictionary<ModelWithValidation>(metadataProvider)
             {
@@ -490,10 +504,11 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxFor_UsesModelStateAttemptedValue(string attemptedValue, string expectedChecked)
         {
             // Arrange
-            var expected =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
                 @"<input {0}data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property1 field is required.]]"" " +
                 @"id=""HtmlEncode[[Property1]]"" name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" />" +
-                @"<input name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
+                @"<input name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
             expected = string.Format(expected, expectedChecked);
 
             var viewData = GetTestModelViewData();
@@ -513,11 +528,12 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxFor_WithObjectAttribute_MapsUnderscoresInNamesToDashes()
         {
             // Arrange
-            var expected =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
                 @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property1 field is required.]]"" " +
                 @"id=""HtmlEncode[[Property1]]"" name=""HtmlEncode[[Property1]]"" " +
                 @"Property1-Property3=""HtmlEncode[[Property3ObjValue]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" /><input " +
-                @"name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
+                @"name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetTestModelViewData());
             var htmlAttributes = new { Property1_Property3 = "Property3ObjValue" };
 
@@ -532,11 +548,12 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxFor_WithAttributeDictionary_GeneratesExpectedAttributes()
         {
             // Arrange
-            var expected =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
                 @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property1 field is required.]]"" " +
                 @"id=""HtmlEncode[[Property1]]"" name=""HtmlEncode[[Property1]]"" " +
                 @"Property3=""HtmlEncode[[Property3Value]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" /><input " +
-                @"name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
+                @"name=""HtmlEncode[[Property1]]"" type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetTestModelViewData());
             var attributes = new Dictionary<string, object> { { "Property3", "Property3Value" } };
 
@@ -551,11 +568,12 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxForInTemplate_GeneratesExpectedValue()
         {
             // Arrange
-            var expected =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
                 @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property1 field is required.]]"" " +
                 @"id=""HtmlEncode[[MyPrefix_Property1]]"" name=""HtmlEncode[[MyPrefix.Property1]]"" Property3=""HtmlEncode[[PropValue]]"" " +
                 @"type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" /><input name=""HtmlEncode[[MyPrefix.Property1]]"" type=""HtmlEncode[[hidden]]"" " +
-                @"value=""HtmlEncode[[false]]"" />";
+                @"value=""HtmlEncode[[false]]"" />");
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetTestModelViewData());
             helper.ViewContext.ViewData.TemplateInfo.HtmlFieldPrefix = "MyPrefix";
             var attributes = new Dictionary<string, object> { { "Property3", "PropValue" } };
@@ -571,11 +589,12 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void CheckBoxFor_WithComplexExpressions_DoesNotUseValuesFromViewDataDictionary()
         {
             // Arrange
-            var expected =
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
                 @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property1 field is required.]]"" " +
                 @"id=""HtmlEncode[[ComplexProperty_Property1]]"" name=""HtmlEncode[[ComplexProperty." +
                 @"Property1]]"" type=""HtmlEncode[[checkbox]]"" value=""HtmlEncode[[true]]"" /><input name=""HtmlEncode[[ComplexProperty.Property1]]"" " +
-                @"type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />";
+                @"type=""HtmlEncode[[hidden]]"" value=""HtmlEncode[[false]]"" />");
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetModelWithValidationViewData());
 
             // Act
diff --git a/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/HtmlHelperHiddenTest.cs b/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/HtmlHelperHiddenTest.cs
index ebd1824f61..192f3133de 100644
--- a/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/HtmlHelperHiddenTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/HtmlHelperHiddenTest.cs
@@ -433,8 +433,10 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void HiddenGeneratesUnobtrusiveValidation()
         {
             // Arrange
-            var expected = @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property2 field is required.]]"" " +
-                           @"id=""HtmlEncode[[Property2]]"" name=""HtmlEncode[[Property2]]"" type=""HtmlEncode[[hidden]]"" value="""" />";
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
+                @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property2 field is required.]]"" " +
+                @"id=""HtmlEncode[[Property2]]"" name=""HtmlEncode[[Property2]]"" type=""HtmlEncode[[hidden]]"" value="""" />");
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetViewDataWithModelStateAndModelAndViewDataValues());
 
             // Act
@@ -686,8 +688,10 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void HiddenFor_GeneratesUnobtrusiveValidationAttributes()
         {
             // Arrange
-            var expected = @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property2 field is required.]]"" " +
-                           @"id=""HtmlEncode[[Property2]]"" name=""HtmlEncode[[Property2]]"" type=""HtmlEncode[[hidden]]"" value="""" />";
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
+                @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property2 field is required.]]"" " +
+                @"id=""HtmlEncode[[Property2]]"" name=""HtmlEncode[[Property2]]"" type=""HtmlEncode[[hidden]]"" value="""" />");
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetViewDataWithErrors());
 
             // Act
diff --git a/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/HtmlHelperPasswordTest.cs b/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/HtmlHelperPasswordTest.cs
index d393c978c6..30ea2c767c 100644
--- a/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/HtmlHelperPasswordTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/HtmlHelperPasswordTest.cs
@@ -160,8 +160,10 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void PasswordGeneratesUnobtrusiveValidation()
         {
             // Arrange
-            var expected = @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property2 field is required.]]"" " +
-                           @"id=""HtmlEncode[[Property2]]"" name=""HtmlEncode[[Property2]]"" type=""HtmlEncode[[password]]"" />";
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
+                @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property2 field is required.]]"" " +
+                @"id=""HtmlEncode[[Property2]]"" name=""HtmlEncode[[Property2]]"" type=""HtmlEncode[[password]]"" />");
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetViewDataWithModelStateAndModelAndViewDataValues());
 
             // Act
@@ -266,8 +268,10 @@ namespace Microsoft.AspNet.Mvc.Rendering
         public void PasswordFor_GeneratesUnobtrusiveValidationAttributes()
         {
             // Arrange
-            var expected = @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property2 field is required.]]"" " +
-                           @"id=""HtmlEncode[[Property2]]"" name=""HtmlEncode[[Property2]]"" type=""HtmlEncode[[password]]"" />";
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            var expected = PlatformNormalizer.NormalizeContent(
+                @"<input data-val=""HtmlEncode[[true]]"" data-val-required=""HtmlEncode[[The Property2 field is required.]]"" " +
+                @"id=""HtmlEncode[[Property2]]"" name=""HtmlEncode[[Property2]]"" type=""HtmlEncode[[password]]"" />");
             var helper = DefaultTemplatesUtilities.GetHtmlHelper(GetViewDataWithErrors());
 
             // Act
diff --git a/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/HtmlHelperSelectTest.cs b/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/HtmlHelperSelectTest.cs
index ca432075bc..ed2340300c 100644
--- a/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/HtmlHelperSelectTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Extensions.Test/Rendering/HtmlHelperSelectTest.cs
@@ -1468,7 +1468,10 @@ namespace Microsoft.AspNet.Mvc.Rendering
             var result = htmlHelper.GetEnumSelectList(type);
 
             // Assert
-            VerifySelectList(expected, result);
+            // OrderBy is used because the order of the results may very depending on the platform / client.
+            VerifySelectList(
+                expected.OrderBy(item => item.Text, StringComparer.Ordinal),
+                result.OrderBy(item => item.Text, StringComparer.Ordinal));
         }
 
         private static string GetExpectedSelectElement(SelectSources source, bool allowMultiple)
diff --git a/test/Microsoft.AspNet.Mvc.Extensions.Test/ViewComponents/JsonViewComponentResultTest.cs b/test/Microsoft.AspNet.Mvc.Extensions.Test/ViewComponents/JsonViewComponentResultTest.cs
index 76e469b1f4..ab03d67a38 100644
--- a/test/Microsoft.AspNet.Mvc.Extensions.Test/ViewComponents/JsonViewComponentResultTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Extensions.Test/ViewComponents/JsonViewComponentResultTest.cs
@@ -1,6 +1,7 @@
 // Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
+using System;
 using System.IO;
 using System.Text;
 using Microsoft.AspNet.Http;
@@ -36,7 +37,9 @@ namespace Microsoft.AspNet.Mvc
             result.Execute(viewComponentContext);
 
             // Assert
-            Assert.Equal("{\r\n  \"foo\": \"abcd\"\r\n}", Encoding.UTF8.GetString(buffer.ToArray()));
+            Assert.Equal(
+                $"{{{Environment.NewLine}  \"foo\": \"abcd\"{Environment.NewLine}}}",
+                Encoding.UTF8.GetString(buffer.ToArray()));
         }
 
         [Fact]
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/ApiExplorerTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/ApiExplorerTest.cs
index be1958ee11..d1e0183fe9 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/ApiExplorerTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/ApiExplorerTest.cs
@@ -8,6 +8,7 @@ using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
 using Microsoft.AspNet.Mvc.ModelBinding;
 using Microsoft.AspNet.Mvc.Xml;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Newtonsoft.Json;
 using Xunit;
@@ -568,7 +569,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Equal(type, description.ResponseType);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ApiExplorer_ResponseContentType_Unset()
         {
             // Arrange
@@ -644,7 +647,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Empty(formats);
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("Controller", "text/xml", "Microsoft.AspNet.Mvc.Xml.XmlDataContractSerializerOutputFormatter")]
         [InlineData("Action", "application/json", "Microsoft.AspNet.Mvc.JsonOutputFormatter")]
         public async Task ApiExplorer_ResponseContentType_OverrideOnAction(
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/ConsumesAttributeTests.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/ConsumesAttributeTests.cs
index e57a7d7121..e01dbaf904 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/ConsumesAttributeTests.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/ConsumesAttributeTests.cs
@@ -8,6 +8,7 @@ using System.Text;
 using System.Threading.Tasks;
 using ActionConstraintsWebSite;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Newtonsoft.Json;
 using Xunit;
@@ -56,10 +57,13 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             // Assert
             Assert.Equal(HttpStatusCode.InternalServerError, response.StatusCode);
             Assert.Equal(typeof(AmbiguousActionException).FullName, exception.ExceptionType);
+            // Mono issue - https://github.com/aspnet/External/issues/19
             Assert.Equal(
-                "Multiple actions matched. The following actions matched route data and had all constraints "+
-                "satisfied:____ActionConstraintsWebSite.ConsumesAttribute_NoFallBackActionController."+
-                "CreateProduct__ActionConstraintsWebSite.ConsumesAttribute_NoFallBackActionController.CreateProduct",
+                "Multiple actions matched. The following actions matched route data and had all constraints " +
+                "satisfied:" + PlatformNormalizer.GetNewLinesAsUnderscores(2) + "ActionConstraintsWebSite." +
+                    "ConsumesAttribute_NoFallBackActionController." +
+                "CreateProduct" + PlatformNormalizer.GetNewLinesAsUnderscores(1) + "ActionConstraintsWebSite." +
+                    "ConsumesAttribute_NoFallBackActionController.CreateProduct",
                 exception.ExceptionMessage);
         }
 
@@ -131,7 +135,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Equal(expectedString, product.SampleString);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task DerivedClassLevelAttribute_OveridesBaseClassLevel()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/ContentNegotiationTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/ContentNegotiationTest.cs
index 13d52edd07..5d50f0070d 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/ContentNegotiationTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/ContentNegotiationTest.cs
@@ -10,6 +10,7 @@ using System.Threading.Tasks;
 using ContentNegotiationWebSite;
 using Microsoft.AspNet.Builder;
 using Microsoft.AspNet.Mvc.Xml;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Xunit;
 
@@ -48,7 +49,8 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             var server = TestHelper.CreateServer(_app, SiteName, _configureServices);
             var client = server.CreateClient();
             var expectedContentType = MediaTypeHeaderValue.Parse("application/json;charset=utf-8");
-            var expectedBody = "{\r\n  \"Name\": \"My name\",\r\n  \"Address\": \"My address\"\r\n}";
+            var expectedBody = $"{{{Environment.NewLine}  \"Name\": \"My name\",{Environment.NewLine}" +
+                $"  \"Address\": \"My address\"{Environment.NewLine}}}";
 
             // Act
             var response = await client.GetAsync("http://localhost/Normal/MultipleAllowedContentTypes");
@@ -112,7 +114,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Equal(expectedOutput, actual);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ProducesAttribute_WithTypeAndContentType_UsesContentType()
         {
             // Arrange
@@ -319,7 +323,9 @@ END:VCARD
             Assert.Equal(expectedBody, body);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task XmlFormatter_SupportedMediaType_DoesNotChangeAcrossRequests()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/ErrorPageTests.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/ErrorPageTests.cs
index 81350ddaf8..cfdf7883ab 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/ErrorPageTests.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/ErrorPageTests.cs
@@ -2,6 +2,7 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
+using System.IO;
 using System.Net;
 using System.Net.Http.Headers;
 using System.Threading.Tasks;
@@ -62,7 +63,10 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Equal(HttpStatusCode.InternalServerError, response.StatusCode);
             Assert.Equal(expectedMediaType, response.Content.Headers.ContentType);
             var content = await response.Content.ReadAsStringAsync();
-            Assert.Contains(@"Views\ErrorFromViewImports\_ViewImports.cshtml", content);
+            Assert.Contains(
+                PlatformNormalizer.NormalizePath(@"Views\ErrorFromViewImports\_ViewImports.cshtml"),
+                content);
+
             Assert.Contains(expectedMessage, content);
         }
     }
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/FileResultTests.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/FileResultTests.cs
index a2ad33b1a2..942f215e7d 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/FileResultTests.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/FileResultTests.cs
@@ -5,6 +5,7 @@ using System;
 using System.Net;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Xunit;
 
@@ -16,8 +17,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
         private readonly Action<IApplicationBuilder> _app = new FilesWebSite.Startup().Configure;
         private readonly Action<IServiceCollection> _configureServices = new FilesWebSite.Startup().ConfigureServices;
 
-
-        [Fact]
+        [ConditionalTheory]
+        // https://github.com/aspnet/Mvc/issues/2727
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task FileFromDisk_CanBeEnabled_WithMiddleware()
         {
             // Arrange
@@ -38,7 +40,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Equal("This is a sample text file", body);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // https://github.com/aspnet/Mvc/issues/2727
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task FileFromDisk_ReturnsFileWithFileName()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/FiltersTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/FiltersTest.cs
index 3d3efec7f2..bcbbc8131c 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/FiltersTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/FiltersTest.cs
@@ -9,6 +9,7 @@ using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
 using Microsoft.AspNet.Mvc.Xml;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Xunit;
 
@@ -505,7 +506,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
         // Action has two Exception filters.
         // Verifies that the second Exception Filter was not executed.
-        [Fact]
+        [ConditionalTheory]
+        // https://github.com/aspnet/Mvc/issues/2757
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ExceptionFilterShortCircuitsAnotherExceptionFilter()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/HtmlGenerationTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/HtmlGenerationTest.cs
index a27f4c0573..6b00521a4d 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/HtmlGenerationTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/HtmlGenerationTest.cs
@@ -12,6 +12,7 @@ using System.Threading.Tasks;
 using HtmlGenerationWebSite;
 using Microsoft.AspNet.Builder;
 using Microsoft.AspNet.Mvc.TagHelpers;
+using Microsoft.AspNet.Testing;
 using Microsoft.Framework.DependencyInjection;
 using Microsoft.Framework.WebEncoders;
 using Xunit;
@@ -54,6 +55,12 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
         [InlineData("Input", null)]
         public async Task HtmlGenerationWebSite_GeneratesExpectedResults(string action, string antiforgeryPath)
         {
+            // This uses FileVersionProvider which uses Uri.TryCreate - https://github.com/aspnet/External/issues/21
+            if (TestPlatformHelper.IsMono && (action == "Link" || action == "Script" || action == "Image"))
+            {
+                return;
+            }
+
             // Arrange
             var server = TestHelper.CreateServer(_app, SiteName, _configureServices);
             var client = server.CreateClient();
@@ -77,7 +84,11 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 #if GENERATE_BASELINES
                 ResourceFile.UpdateFile(_resourcesAssembly, outputFile, expectedContent, responseContent);
 #else
-                Assert.Equal(expectedContent.Trim(), responseContent, ignoreLineEndingDifferences: true);
+                // Mono issue - https://github.com/aspnet/External/issues/19
+                Assert.Equal(
+                    PlatformNormalizer.NormalizeContent(expectedContent.Trim()),
+                    responseContent,
+                    ignoreLineEndingDifferences: true);
 #endif
             }
             else
@@ -89,7 +100,11 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
                 ResourceFile.UpdateFile(_resourcesAssembly, outputFile, expectedContent, responseContent);
 #else
                 expectedContent = string.Format(expectedContent, forgeryToken);
-                Assert.Equal(expectedContent.Trim(), responseContent, ignoreLineEndingDifferences: true);
+                // Mono issue - https://github.com/aspnet/External/issues/19
+                Assert.Equal(
+                    PlatformNormalizer.NormalizeContent(expectedContent.Trim()),
+                    responseContent,
+                    ignoreLineEndingDifferences: true);
 #endif
             }
         }
@@ -104,6 +119,12 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
         [InlineData("Script", null)]
         public async Task HtmlGenerationWebSite_GenerateEncodedResults(string action, string antiforgeryPath)
         {
+            // This uses FileVersionProvider which uses Uri.TryCreate - https://github.com/aspnet/External/issues/21
+            if (TestPlatformHelper.IsMono && (action == "Link" || action == "Script"))
+            {
+                return;
+            }
+
             // Arrange
             var server = TestHelper.CreateServer(_app, SiteName, services =>
             {
@@ -133,7 +154,11 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 #if GENERATE_BASELINES
                 ResourceFile.UpdateFile(_resourcesAssembly, outputFile, expectedContent, responseContent);
 #else
-                Assert.Equal(expectedContent.Trim(), responseContent, ignoreLineEndingDifferences: true);
+                // Mono issue - https://github.com/aspnet/External/issues/19
+                Assert.Equal(
+                    PlatformNormalizer.NormalizeContent(expectedContent.Trim()),
+                    responseContent,
+                    ignoreLineEndingDifferences: true);
 #endif
             }
             else
@@ -145,7 +170,11 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
                 ResourceFile.UpdateFile(_resourcesAssembly, outputFile, expectedContent, responseContent);
 #else
                 expectedContent = string.Format(expectedContent, forgeryToken);
-                Assert.Equal(expectedContent.Trim(), responseContent, ignoreLineEndingDifferences: true);
+                // Mono issue - https://github.com/aspnet/External/issues/19
+                Assert.Equal(
+                    PlatformNormalizer.NormalizeContent(expectedContent.Trim()),
+                    responseContent,
+                    ignoreLineEndingDifferences: true);
 #endif
             }
         }
@@ -188,7 +217,11 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             ResourceFile.UpdateFile(_resourcesAssembly, outputFile, expectedContent, responseContent);
 #else
             expectedContent = string.Format(expectedContent, forgeryToken);
-            Assert.Equal(expectedContent.Trim(), responseContent, ignoreLineEndingDifferences: true);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(
+                PlatformNormalizer.NormalizeContent(expectedContent.Trim()),
+                responseContent,
+                ignoreLineEndingDifferences: true);
 #endif
         }
 
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/HtmlHelperOptionsTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/HtmlHelperOptionsTest.cs
index e1e2ad1315..79911fedb1 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/HtmlHelperOptionsTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/HtmlHelperOptionsTest.cs
@@ -83,7 +83,11 @@ True";
             var body = await client.GetStringAsync("http://localhost/HtmlHelperOptions/OverrideAppWideDefaultsInView");
 
             // Assert
-            Assert.Equal(expected, body.Trim(), ignoreLineEndingDifferences: true);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(
+                PlatformNormalizer.NormalizeContent(expected),
+                body.Trim(),
+                ignoreLineEndingDifferences: true);
         }
     }
 }
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/InlineConstraintTests.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/InlineConstraintTests.cs
index 6e4785b7cf..972de79070 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/InlineConstraintTests.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/InlineConstraintTests.cs
@@ -8,6 +8,7 @@ using System.Net.Http;
 using System.Threading.Tasks;
 using InlineConstraints;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Testing;
 using Microsoft.Framework.DependencyInjection;
 using Newtonsoft.Json;
 using Xunit;
@@ -48,10 +49,14 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             var exception = response.GetServerException();
-            Assert.Equal("The view 'Index' was not found." +
-                         " The following locations were searched:__/Areas/Users/Views/Home/Index.cshtml__" +
-                         "/Areas/Users/Views/Shared/Index.cshtml__/Views/Shared/Index.cshtml.",
-                         exception.ExceptionMessage);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(
+                "The view 'Index' was not found." +
+                " The following locations were searched:" + PlatformNormalizer.GetNewLinesAsUnderscores(1) +
+                "/Areas/Users/Views/Home/Index.cshtml" + PlatformNormalizer.GetNewLinesAsUnderscores(1) +
+                "/Areas/Users/Views/Shared/Index.cshtml" + PlatformNormalizer.GetNewLinesAsUnderscores(1) +
+                "/Views/Shared/Index.cshtml.",
+                exception.ExceptionMessage);
         }
 
         [Fact]
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/InputFormatterTests.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/InputFormatterTests.cs
index 0b400a8dc4..d194829972 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/InputFormatterTests.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/InputFormatterTests.cs
@@ -8,6 +8,7 @@ using System.Net.Http.Headers;
 using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Newtonsoft.Json;
 using Xunit;
@@ -21,7 +22,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
         private readonly Action<IServiceCollection> _configureServices = new FormatterWebSite.Startup().ConfigureServices;
 
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task CheckIfXmlInputFormatterIsBeingCalled()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/InputObjectValidationTests.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/InputObjectValidationTests.cs
index 439e0ac5e8..92b516c486 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/InputObjectValidationTests.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/InputObjectValidationTests.cs
@@ -10,6 +10,8 @@ using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
 using Microsoft.AspNet.WebUtilities;
+using Microsoft.AspNet.Testing;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Newtonsoft.Json;
 using Xunit;
@@ -44,7 +46,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             }
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task CheckIfObjectIsDeserializedWithoutErrors()
         {
             // Arrange
@@ -91,10 +95,13 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             Assert.Equal(HttpStatusCode.OK, response.StatusCode);
-            Assert.Equal("The field Id must be between 1 and 2000.," +
+            // Mono issue - https://github.com/aspnet/External/issues/29
+            Assert.Equal(PlatformNormalizer.NormalizeContent(
+                "The field Id must be between 1 and 2000.," +
                 "The field Name must be a string or array type with a minimum length of '5'.," +
                 "The field Alias must be a string with a minimum length of 3 and a maximum length of 15.," +
-                "The field Designation must match the regular expression '[0-9a-zA-Z]*'.",
+                "The field Designation must match the regular expression " +
+                (TestPlatformHelper.IsMono ? "[0-9a-zA-Z]*." : "'[0-9a-zA-Z]*'.")),
                 await response.Content.ReadAsStringAsync());
         }
 
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/JsonOutputFormatterTests.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/JsonOutputFormatterTests.cs
index 2af52a2c22..a2064bf5c1 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/JsonOutputFormatterTests.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/JsonOutputFormatterTests.cs
@@ -9,6 +9,7 @@ using System.Net.Http.Headers;
 using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Newtonsoft.Json;
 using Xunit;
@@ -50,7 +51,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Equal(expectedBody, actualBody);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task SerializableErrorIsReturnedInExpectedFormat()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/LinkGenerationTests.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/LinkGenerationTests.cs
index 2285f1838f..962a24d1ef 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/LinkGenerationTests.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/LinkGenerationTests.cs
@@ -7,6 +7,7 @@ using System.Net.Http.Headers;
 using System.Reflection;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Testing;
 using Microsoft.Framework.DependencyInjection;
 using Xunit;
 
@@ -45,8 +46,10 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             Assert.Equal(HttpStatusCode.Redirect, response.StatusCode);
-
-            Assert.Equal(expected, response.Headers.Location.ToString());
+            // Location.ToString() in mono returns file://url. (https://github.com/aspnet/External/issues/21)
+            Assert.Equal(
+                TestPlatformHelper.IsMono ? new Uri(expected) : new Uri(expected, UriKind.Relative),
+                response.Headers.Location);
         }
 
         [Fact]
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/LocalizationTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/LocalizationTest.cs
index cb205b341b..c15576f728 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/LocalizationTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/LocalizationTest.cs
@@ -7,6 +7,7 @@ using System.Reflection;
 using System.Threading.Tasks;
 using LocalizationWebSite;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Testing;
 using Microsoft.Framework.DependencyInjection;
 using Microsoft.Net.Http.Headers;
 using Xunit;
@@ -42,14 +43,17 @@ mypartial
 </fr-language-layout>";
                 yield return new[] { "fr", expected2 };
 
-                var expected3 =
+                if (!TestPlatformHelper.IsMono)
+                {
+                    // https://github.com/aspnet/Mvc/issues/2759
+                    var expected3 =
  @"<language-layout>
 index
 partial
 mypartial
 </language-layout>";
-                yield return new[] { "na", expected3 };
-
+                    yield return new[] { "!-invalid-!", expected3 };
+                }
             }
         }
 
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/ModelBindingTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/ModelBindingTest.cs
index 0727599e8c..5d795bc1eb 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/ModelBindingTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/ModelBindingTest.cs
@@ -9,8 +9,11 @@ using System.Net;
 using System.Net.Http;
 using System.Reflection;
 using System.Text;
+using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Testing;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using ModelBindingWebSite.Models;
 using ModelBindingWebSite.ViewModels;
@@ -791,14 +794,15 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             var json = JsonConvert.DeserializeObject<Dictionary<string, string>>(response);
 
             // 8 is the value of MaxModelValidationErrors for the application being tested.
+            // Mono issue - https://github.com/aspnet/External/issues/19
             Assert.Equal(8, json.Count);
-            Assert.Equal("The Field1 field is required.", json["Field1"]);
-            Assert.Equal("The Field2 field is required.", json["Field2"]);
-            Assert.Equal("The Field3 field is required.", json["Field3"]);
-            Assert.Equal("The Field4 field is required.", json["Field4"]);
-            Assert.Equal("The Field5 field is required.", json["Field5"]);
-            Assert.Equal("The Field6 field is required.", json["Field6"]);
-            Assert.Equal("The Field7 field is required.", json["Field7"]);
+            Assert.Equal(PlatformNormalizer.NormalizeContent("The Field1 field is required."), json["Field1"]);
+            Assert.Equal(PlatformNormalizer.NormalizeContent("The Field2 field is required."), json["Field2"]);
+            Assert.Equal(PlatformNormalizer.NormalizeContent("The Field3 field is required."), json["Field3"]);
+            Assert.Equal(PlatformNormalizer.NormalizeContent("The Field4 field is required."), json["Field4"]);
+            Assert.Equal(PlatformNormalizer.NormalizeContent("The Field5 field is required."), json["Field5"]);
+            Assert.Equal(PlatformNormalizer.NormalizeContent("The Field6 field is required."), json["Field6"]);
+            Assert.Equal(PlatformNormalizer.NormalizeContent("The Field7 field is required."), json["Field7"]);
             Assert.Equal("The maximum number of allowed model errors has been reached.", json[""]);
         }
 
@@ -815,9 +819,10 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             // Assert
             var json = JsonConvert.DeserializeObject<Dictionary<string, string>>(response);
             Assert.Equal(3, json.Count);
-            Assert.Equal("The Field1 field is required.", json["Field1"]);
-            Assert.Equal("The Field2 field is required.", json["Field2"]);
-            Assert.Equal("The Field3 field is required.", json["Field3"]);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(PlatformNormalizer.NormalizeContent("The Field1 field is required."), json["Field1"]);
+            Assert.Equal(PlatformNormalizer.NormalizeContent("The Field2 field is required."), json["Field2"]);
+            Assert.Equal(PlatformNormalizer.NormalizeContent("The Field3 field is required."), json["Field3"]);
         }
 
         [Fact]
@@ -1256,13 +1261,15 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             var modelStateErrors = JsonConvert.DeserializeObject<IDictionary<string, IEnumerable<string>>>(body);
 
             Assert.Equal(2, modelStateErrors.Count);
+            // OrderBy is used because the order of the results may very depending on the platform / client.
             Assert.Equal(new[] {
                     "The field Year must be between 1980 and 2034.",
                     "Year is invalid"
-                    }, modelStateErrors["Year"]);
+                }, modelStateErrors["Year"].OrderBy(item => item, StringComparer.Ordinal));
 
             var vinError = Assert.Single(modelStateErrors["Vin"]);
-            Assert.Equal("The Vin field is required.", vinError);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(PlatformNormalizer.NormalizeContent("The Vin field is required."), vinError);
         }
 
         [Fact]
@@ -1336,7 +1343,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
         }
 
 #if DNX451
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task UpdateVehicle_WithXml_BindsBodyServicesAndHeaders()
         {
             // Arrange
@@ -1406,6 +1415,17 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 #if GENERATE_BASELINES
             ResourceFile.UpdateFile(_assembly, outputFile, expectedContent, responseContent);
 #else
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            expectedContent = PlatformNormalizer.NormalizeContent(expectedContent);
+            if (TestPlatformHelper.IsMono)
+            {
+                expectedContent = expectedContent.Replace(
+                    "<span class=\"field-validation-error\" data-valmsg-for=\"Vehicle.Year\"" +
+                    " data-valmsg-replace=\"true\">The field Year must be between 1980 and 2034.</span>",
+                    "<span class=\"field-validation-error\" data-valmsg-for=\"Vehicle.Year\"" +
+                    " data-valmsg-replace=\"true\">Year is invalid</span>");
+            }
+
             Assert.Equal(expectedContent, responseContent, ignoreLineEndingDifferences: true);
 #endif
         }
@@ -1442,7 +1462,11 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 #if GENERATE_BASELINES
             ResourceFile.UpdateFile(_assembly, outputFile, expectedContent, responseContent);
 #else
-            Assert.Equal(expectedContent, responseContent, ignoreLineEndingDifferences: true);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(
+                PlatformNormalizer.NormalizeContent(expectedContent),
+                responseContent,
+                ignoreLineEndingDifferences: true);
 #endif
         }
 
@@ -1653,7 +1677,11 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 #if GENERATE_BASELINES
             ResourceFile.UpdateFile(_assembly, outputFile, expectedContent, responseContent);
 #else
-            Assert.Equal(expectedContent, responseContent, ignoreLineEndingDifferences: true);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(
+                PlatformNormalizer.NormalizeContent(expectedContent),
+                responseContent,
+                ignoreLineEndingDifferences: true);
 #endif
         }
 
@@ -1696,7 +1724,11 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 #if GENERATE_BASELINES
             ResourceFile.UpdateFile(_assembly, outputFile, expectedContent, responseContent);
 #else
-            Assert.Equal(expectedContent, responseContent, ignoreLineEndingDifferences: true);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(
+                PlatformNormalizer.NormalizeContent(expectedContent),
+                responseContent,
+                ignoreLineEndingDifferences: true);
 #endif
         }
 
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/ModelMetadataAttributeTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/ModelMetadataAttributeTest.cs
index 875339a26f..d441e7c61a 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/ModelMetadataAttributeTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/ModelMetadataAttributeTest.cs
@@ -7,6 +7,7 @@ using System.Net.Http;
 using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Testing;
 using Microsoft.Framework.DependencyInjection;
 using Newtonsoft.Json;
 using Xunit;
@@ -60,10 +61,15 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Equal(6, json.Count);
             Assert.Equal("CompanyName cannot be null or empty.", json["CompanyName"]);
             Assert.Equal("The field Price must be between 20 and 100.", json["Price"]);
-            Assert.Equal("The Category field is required.", json["Category"]);
-            Assert.Equal("The Contact Us field is required.", json["Contact"]);
-            Assert.Equal("The Detail2 field is required.", json["ProductDetails.Detail2"]);
-            Assert.Equal("The Detail3 field is required.", json["ProductDetails.Detail3"]);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(PlatformNormalizer.NormalizeContent("The Category field is required."), json["Category"]);
+            Assert.Equal(PlatformNormalizer.NormalizeContent("The Contact Us field is required."), json["Contact"]);
+            Assert.Equal(
+                PlatformNormalizer.NormalizeContent("The Detail2 field is required."),
+                json["ProductDetails.Detail2"]);
+            Assert.Equal(
+                PlatformNormalizer.NormalizeContent("The Detail3 field is required."),
+                json["ProductDetails.Detail3"]);
         }
 
         [Fact]
@@ -85,7 +91,10 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             var body = await response.Content.ReadAsStringAsync();
             var json = JsonConvert.DeserializeObject<Dictionary<string, string>>(body);
             Assert.Equal(1, json.Count);
-            Assert.Equal("The ProductDetails field is required.", json["ProductDetails"]);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(
+                PlatformNormalizer.NormalizeContent("The ProductDetails field is required."),
+                json["ProductDetails"]);
         }
 
         [Fact]
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/MvcSampleTests.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/MvcSampleTests.cs
index 9df93bdd77..e970578fa0 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/MvcSampleTests.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/MvcSampleTests.cs
@@ -10,6 +10,7 @@ using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
 using Microsoft.AspNet.Mvc.Xml;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Xunit;
 
@@ -111,7 +112,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Equal(HttpStatusCode.NotFound, response.StatusCode);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono.Xml2.XmlTextReader.ReadText is unable to read the XML. This is fixed in mono 4.3.0.
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task Home_CreateUser_ReturnsXmlBasedOnAcceptHeader()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/PrecompilationTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/PrecompilationTest.cs
index 5c8cc5e377..980c2e2665 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/PrecompilationTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/PrecompilationTest.cs
@@ -9,6 +9,7 @@ using System.Reflection;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
 using Microsoft.AspNet.Mvc.Razor.Precompilation;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Microsoft.Framework.Runtime;
 using PrecompilationWebSite;
@@ -23,7 +24,8 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
         private readonly Action<IApplicationBuilder> _app = new Startup().Configure;
         private readonly Action<IServiceCollection> _configureServices = new Startup().ConfigureServices;
 
-        [Fact]
+        [ConditionalTheory]
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task PrecompiledView_RendersCorrectly()
         {
             // Arrange
@@ -186,7 +188,8 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.StartsWith(expected, responseContent.Trim());
         }
 
-        [Fact]
+        [ConditionalTheory]
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task DeletingPrecompiledGlobalFile_PriorToFirstRequestToAView_CausesViewToBeRecompiled()
         {
             // Arrange
@@ -230,7 +233,8 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             }
         }
 
-        [Fact]
+        [ConditionalTheory]
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task TagHelpersFromTheApplication_CanBeAdded()
         {
             // Arrange
@@ -252,7 +256,8 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Equal(expected, responseLines[1]);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task TagHelpersFromTheApplication_CanBeRemoved()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/RemoteAttributeValidationTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/RemoteAttributeValidationTest.cs
index e536ffc150..2b67b60d21 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/RemoteAttributeValidationTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/RemoteAttributeValidationTest.cs
@@ -47,7 +47,11 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 #if GENERATE_BASELINES
             ResourceFile.UpdateFile(_resourcesAssembly, outputFile, expectedContent, responseContent);
 #else
-            Assert.Equal(expectedContent, responseContent, ignoreLineEndingDifferences: true);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(
+                PlatformNormalizer.NormalizeContent(expectedContent),
+                responseContent,
+                ignoreLineEndingDifferences: true);
 #endif
         }
 
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/RespectBrowserAcceptHeaderTests.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/RespectBrowserAcceptHeaderTests.cs
index d8c34811e5..7e5ef1f5e8 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/RespectBrowserAcceptHeaderTests.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/RespectBrowserAcceptHeaderTests.cs
@@ -8,6 +8,7 @@ using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
 using Microsoft.AspNet.Mvc.Xml;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Xunit;
 
@@ -41,7 +42,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Equal("{\"Id\":10,\"Name\":\"John\"}", responseData);
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("application/xml,*/*;0.2")]
         [InlineData("application/xml,*/*")]
         public async Task AllMediaRangeAcceptHeader_ProducesAttributeIsHonored(string acceptHeader)
@@ -66,7 +69,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             XmlAssert.Equal(expectedResponseData, responseData);
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("application/xml,*/*;0.2")]
         [InlineData("application/xml,*/*")]
         public async Task AllMediaRangeAcceptHeader_WithContentTypeHeader_ContentTypeIsHonored(string acceptHeader)
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/ResponseCacheTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/ResponseCacheTest.cs
index 27f80eacd2..516ebf852c 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/ResponseCacheTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/ResponseCacheTest.cs
@@ -3,6 +3,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
 using Microsoft.Framework.DependencyInjection;
@@ -29,7 +30,7 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             var data = Assert.Single(response.Headers.GetValues("Cache-control"));
-            Assert.Equal("public, max-age=100", data);
+            AssertHeaderEquals("public, max-age=100", data);
             data = Assert.Single(response.Headers.GetValues("Vary"));
             Assert.Equal("Accept", data);
         }
@@ -58,7 +59,7 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             var data = Assert.Single(response.Headers.GetValues("Cache-control"));
-            Assert.Equal(expected, data);
+            AssertHeaderEquals(expected, data);
         }
 
         [Fact]
@@ -74,12 +75,12 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             var data = Assert.Single(response1.Headers.GetValues("Cache-control"));
-            Assert.Equal("public, max-age=100", data);
+            AssertHeaderEquals("public, max-age=100", data);
             data = Assert.Single(response1.Headers.GetValues("Vary"));
             Assert.Equal("Accept", data);
 
             data = Assert.Single(response2.Headers.GetValues("Cache-control"));
-            Assert.Equal("public, max-age=100", data);
+            AssertHeaderEquals("public, max-age=100", data);
             data = Assert.Single(response2.Headers.GetValues("Vary"));
             Assert.Equal("Accept", data);
         }
@@ -96,7 +97,7 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             var data = Assert.Single(response.Headers.GetValues("Cache-control"));
-            Assert.Equal("public, max-age=20", data);
+            AssertHeaderEquals("public, max-age=20", data);
         }
 
         [Fact]
@@ -111,7 +112,7 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             var data = Assert.Single(response.Headers.GetValues("Cache-control"));
-            Assert.Equal("no-store, no-cache", data);
+            AssertHeaderEquals("no-store, no-cache", data);
         }
 
         [Fact]
@@ -128,7 +129,7 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             var data = Assert.Single(response.Headers.GetValues("Vary"));
             Assert.Equal("Accept", data);
             data = Assert.Single(response.Headers.GetValues("Cache-control"));
-            Assert.Equal("public, max-age=10", data);
+            AssertHeaderEquals("public, max-age=10", data);
             IEnumerable<string> pragmaValues;
             response.Headers.TryGetValues("Pragma", out pragmaValues);
             Assert.Null(pragmaValues);
@@ -146,7 +147,7 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             var data = Assert.Single(response.Headers.GetValues("Cache-control"));
-            Assert.Equal("public, max-age=40", data);
+            AssertHeaderEquals("public, max-age=40", data);
         }
 
         [Fact]
@@ -177,7 +178,7 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             var data = Assert.Single(response.Headers.GetValues("Cache-control"));
-            Assert.Equal("public, max-age=30", data);
+            AssertHeaderEquals("public, max-age=30", data);
         }
 
         [Fact]
@@ -192,7 +193,7 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             var data = Assert.Single(response.Headers.GetValues("Cache-control"));
-            Assert.Equal("max-age=30, private", data);
+            AssertHeaderEquals("max-age=30, private", data);
         }
 
         [Fact]
@@ -207,7 +208,7 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             var data = Assert.Single(response.Headers.GetValues("Cache-control"));
-            Assert.Equal("no-store, no-cache", data);
+            AssertHeaderEquals("no-store, no-cache", data);
             data = Assert.Single(response.Headers.GetValues("Pragma"));
             Assert.Equal("no-cache", data);
         }
@@ -224,7 +225,7 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             var data = Assert.Single(response.Headers.GetValues("Cache-control"));
-            Assert.Equal("public, max-age=30", data);
+            AssertHeaderEquals("public, max-age=30", data);
             data = Assert.Single(response.Headers.GetValues("Vary"));
             Assert.Equal("Accept", data);
         }
@@ -241,7 +242,7 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             var data = Assert.Single(response.Headers.GetValues("Cache-control"));
-            Assert.Equal("public, max-age=10", data);
+            AssertHeaderEquals("public, max-age=10", data);
         }
 
         [Fact]
@@ -275,7 +276,7 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             var data = Assert.Single(response.Headers.GetValues("Vary"));
             Assert.Equal("Accept", data);
             data = Assert.Single(response.Headers.GetValues("Cache-control"));
-            Assert.Equal("public, max-age=30", data);
+            AssertHeaderEquals("public, max-age=30", data);
             IEnumerable<string> pragmaValues;
             response.Headers.TryGetValues("Pragma", out pragmaValues);
             Assert.Null(pragmaValues);
@@ -294,7 +295,7 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             var data = Assert.Single(response.Headers.GetValues("Cache-control"));
-            Assert.Equal("public, max-age=15", data);
+            AssertHeaderEquals("public, max-age=15", data);
         }
 
         [Fact]
@@ -309,7 +310,7 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             var data = Assert.Single(response.Headers.GetValues("Cache-control"));
-            Assert.Equal("max-age=30, private", data);
+            AssertHeaderEquals("max-age=30, private", data);
         }
 
         [Fact]
@@ -339,7 +340,7 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             var cacheControl = Assert.Single(response.Headers.GetValues("Cache-control"));
-            Assert.Equal("public, max-age=30", cacheControl);
+            AssertHeaderEquals("public, max-age=30", cacheControl);
             var vary = Assert.Single(response.Headers.GetValues("Vary"));
             Assert.Equal("Test", vary);
         }
@@ -356,8 +357,16 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
 
             // Assert
             var cacheControl = Assert.Single(response.Headers.GetValues("Cache-control"));
-            Assert.Equal("public, max-age=30", cacheControl);
+            AssertHeaderEquals("public, max-age=30", cacheControl);
             Assert.Throws<InvalidOperationException>(() => response.Headers.GetValues("Vary"));
         }
+
+        private void AssertHeaderEquals(string expected, string actual)
+        {
+            // OrderBy is used because the order of the results may very depending on the platform / client.
+            Assert.Equal(
+                expected.Split(',').Select(p => p.Trim()).OrderBy(item => item, StringComparer.Ordinal),
+                actual.Split(',').Select(p => p.Trim()).OrderBy(item => item, StringComparer.Ordinal));
+        }
     }
 }
\ No newline at end of file
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/SerializableErrorTests.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/SerializableErrorTests.cs
index 41b9bd0880..6bc15adad7 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/SerializableErrorTests.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/SerializableErrorTests.cs
@@ -9,6 +9,8 @@ using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
 using Microsoft.AspNet.Mvc.Xml;
+using Microsoft.AspNet.Testing;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Xunit;
 
@@ -20,9 +22,27 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
         private readonly Action<IApplicationBuilder> _app = new XmlFormattersWebSite.Startup().Configure;
         private readonly Action<IServiceCollection> _configureServices = new XmlFormattersWebSite.Startup().ConfigureServices;
 
+        public static TheoryData AcceptHeadersData
+        {
+            get
+            {
+                var data = new TheoryData<string>
+                {
+                    "application/xml-xmlser"
+                };
+
+                // Mono issue - https://github.com/aspnet/External/issues/18
+                if (!TestPlatformHelper.IsMono)
+                {
+                    data.Add("application/xml-dcs");
+                }
+
+                return data;
+            }
+        }
+
         [Theory]
-        [InlineData("application/xml-xmlser")]
-        [InlineData("application/xml-dcs")]
+        [MemberData(nameof(AcceptHeadersData))]
         public async Task ModelStateErrors_AreSerialized(string acceptHeader)
         {
             // Arrange
@@ -43,7 +63,11 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             XmlAssert.Equal(expectedXml, responseData);
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        // XmlSerializer test is disabled Mono.Xml2.XmlTextReader.ReadText is unable to read the XML.
+        // This is fixed in mono 4.3.0.
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("application/xml-xmlser")]
         [InlineData("application/xml-dcs")]
         public async Task PostedSerializableError_IsBound(string acceptHeader)
@@ -67,7 +91,11 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             XmlAssert.Equal(expectedXml, responseData);
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        // XmlSerializer test is disabled Mono.Xml2.XmlTextReader.ReadText is unable to read the XML.
+        // This is fixed in mono 4.3.0.
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("application/xml-xmlser")]
         [InlineData("application/xml-dcs")]
         public async Task IsReturnedInExpectedFormat(string acceptHeader)
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/TagHelpersTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/TagHelpersTest.cs
index f4a6bdb2af..f4cc52b9a3 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/TagHelpersTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/TagHelpersTest.cs
@@ -156,7 +156,11 @@ page:<root>root-content</root>"
 #if GENERATE_BASELINES
             ResourceFile.UpdateFile(_resourcesAssembly, outputFile, expectedContent, responseContent);
 #else
-            Assert.Equal(expectedContent, responseContent, ignoreLineEndingDifferences: true);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(
+                PlatformNormalizer.NormalizeContent(expectedContent),
+                responseContent,
+                ignoreLineEndingDifferences: true);
 #endif
         }
 
@@ -224,7 +228,11 @@ page:<root>root-content</root>"
 #if GENERATE_BASELINES
             ResourceFile.UpdateFile(_resourcesAssembly, outputFile, expectedContent, responseContent);
 #else
-            Assert.Equal(expectedContent, responseContent, ignoreLineEndingDifferences: true);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(
+                PlatformNormalizer.NormalizeContent(expectedContent),
+                responseContent,
+                ignoreLineEndingDifferences: true);
 #endif
         }
     }
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/TempDataTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/TempDataTest.cs
index 473e1a7938..499c0f4069 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/TempDataTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/TempDataTest.cs
@@ -8,6 +8,7 @@ using System.Net;
 using System.Net.Http;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Microsoft.Net.Http.Headers;
 using Xunit;
@@ -74,7 +75,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Equal("Foo", body);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task Redirect_RetainsTempData_EvenIfAccessed()
         {
             // Arrange
@@ -142,7 +145,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Equal("Foo", body);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task TempData_ValidTypes_RoundTripProperly()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/TryValidateModelTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/TryValidateModelTest.cs
index 5b335f3b68..e52c24d4b9 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/TryValidateModelTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/TryValidateModelTest.cs
@@ -3,11 +3,13 @@
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Net;
 using System.Net.Http;
 using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Testing;
 using Microsoft.Framework.DependencyInjection;
 using Newtonsoft.Json;
 using Xunit;
@@ -42,9 +44,15 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Equal(4, json.Count);
             Assert.Equal("CompanyName cannot be null or empty.", json["CompanyName"]);
             Assert.Equal("The field Price must be between 20 and 100.", json["Price"]);
-            Assert.Equal("The Category field is required.", json["Category"]);
-            Assert.Equal("The field Contact Us must be a string with a maximum length of 20."+
-                "The field Contact Us must match the regular expression '^[0-9]*$'.", json["Contact"]);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(
+                PlatformNormalizer.NormalizeContent("The Category field is required."),
+                json["Category"]);
+            AssertErrorEquals(
+                "The field Contact Us must be a string with a maximum length of 20." +
+                "The field Contact Us must match the regular expression " + 
+                (TestPlatformHelper.IsMono ? "^[0-9]*$." : "'^[0-9]*$'."),
+                json["Contact"]);
         }
 
         [Fact]
@@ -106,14 +114,33 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             var json = JsonConvert.DeserializeObject<Dictionary<string, string>>(body);
             Assert.Equal("CompanyName cannot be null or empty.", json["[0].CompanyName"]);
             Assert.Equal("The field Price must be between 20 and 100.", json["[0].Price"]);
-            Assert.Equal("The Category field is required.", json["[0].Category"]);
-            Assert.Equal("The field Contact Us must be a string with a maximum length of 20." +
-                "The field Contact Us must match the regular expression '^[0-9]*$'.", json["[0].Contact"]);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(
+                PlatformNormalizer.NormalizeContent("The Category field is required."),
+                json["[0].Category"]);
+            AssertErrorEquals(
+                "The field Contact Us must be a string with a maximum length of 20." +
+                "The field Contact Us must match the regular expression " + 
+                (TestPlatformHelper.IsMono ? "^[0-9]*$." : "'^[0-9]*$'."),
+                json["[0].Contact"]);
             Assert.Equal("CompanyName cannot be null or empty.", json["[1].CompanyName"]);
             Assert.Equal("The field Price must be between 20 and 100.", json["[1].Price"]);
-            Assert.Equal("The Category field is required.", json["[1].Category"]);
-            Assert.Equal("The field Contact Us must be a string with a maximum length of 20." +
-                "The field Contact Us must match the regular expression '^[0-9]*$'.", json["[1].Contact"]);
+            Assert.Equal(
+                PlatformNormalizer.NormalizeContent("The Category field is required."),
+                json["[1].Category"]);
+            AssertErrorEquals(
+                "The field Contact Us must be a string with a maximum length of 20." +
+                "The field Contact Us must match the regular expression " + 
+                (TestPlatformHelper.IsMono ? "^[0-9]*$." : "'^[0-9]*$'."),
+                json["[1].Contact"]);
+        }
+
+        private void AssertErrorEquals(string expected, string actual)
+        {
+            // OrderBy is used because the order of the results may very depending on the platform / client.
+            Assert.Equal(
+                expected.Split('.').OrderBy(item => item, StringComparer.Ordinal),
+                actual.Split('.').OrderBy(item => item, StringComparer.Ordinal));
         }
     }
 }
\ No newline at end of file
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/ViewEngineTests.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/ViewEngineTests.cs
index 06469af086..5eeff1bd97 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/ViewEngineTests.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/ViewEngineTests.cs
@@ -6,6 +6,7 @@ using System.Collections.Generic;
 using System.Reflection;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Testing;
 using Microsoft.Framework.DependencyInjection;
 using Microsoft.Net.Http.Headers;
 using RazorWebSite;
@@ -143,9 +144,13 @@ gb-partial";
 fr-partial";
                 yield return new[] { "fr", expected2 };
 
-                var expected3 = @"expander-index
+                if (!TestPlatformHelper.IsMono)
+                {
+                    // https://github.com/aspnet/Mvc/issues/2759
+                    var expected3 = @"expander-index
 expander-partial";
-                yield return new[] { "na", expected3 };
+                    yield return new[] { "!-invalid-!", expected3 };
+                }
             }
         }
 
@@ -288,7 +293,12 @@ View With Layout
 </language-layout>";
 
                 yield return new[] { "en-GB", expected1 };
-                yield return new[] { "na", expected1 };
+
+                if (!TestPlatformHelper.IsMono)
+                {
+                    // https://github.com/aspnet/Mvc/issues/2759
+                    yield return new[] { "!-invalid-!", expected1 };
+                }
 
                 var expected2 =
  @"<fr-language-layout>
@@ -443,7 +453,10 @@ Partial that does not specify Layout
 #if GENERATE_BASELINES
             ResourceFile.UpdateFile(_assembly, outputFile, expectedContent, responseContent);
 #else
-            Assert.Equal(expectedContent, responseContent, ignoreLineEndingDifferences: true);
+            Assert.Equal(
+                PlatformNormalizer.NormalizePath(expectedContent),
+                responseContent,
+                ignoreLineEndingDifferences: true);
 #endif
         }
     }
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/WebApiCompatShimBasicTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/WebApiCompatShimBasicTest.cs
index 22aa9c8cb8..6a0deb7238 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/WebApiCompatShimBasicTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/WebApiCompatShimBasicTest.cs
@@ -11,6 +11,8 @@ using System.Net.Http.Headers;
 using System.Threading.Tasks;
 using System.Web.Http;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Testing;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Newtonsoft.Json;
 using Xunit;
@@ -207,7 +209,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Equal("The field ID must be between 0 and 100.", json["ID"]);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/24
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ApiController_RequestProperty()
         {
             // Arrange
@@ -229,7 +233,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Equal(expected, content);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/24
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ApiController_RequestParameter()
         {
             // Arrange
@@ -301,7 +307,12 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             // Assert		
             Assert.Equal(HttpStatusCode.OK, response.StatusCode);
             Assert.NotNull(response.Content);
-            Assert.NotNull(response.Content.Headers.ContentLength);
+            if (!TestPlatformHelper.IsMono)
+            {
+                // Mono issue - https://github.com/aspnet/External/issues/20
+                Assert.NotNull(response.Content.Headers.ContentLength);
+            }
+
             Assert.Null(response.Headers.TransferEncodingChunked);
 
             // When HttpClient by default reads and buffers the resposne body, it diposes the
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/XmlDataContractSerializerFormattersWrappingTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/XmlDataContractSerializerFormattersWrappingTest.cs
index 40ea6c5310..0864fd85b8 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/XmlDataContractSerializerFormattersWrappingTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/XmlDataContractSerializerFormattersWrappingTest.cs
@@ -8,6 +8,7 @@ using System.Net.Http.Headers;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
 using Microsoft.AspNet.Mvc.Xml;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Xunit;
 
@@ -19,7 +20,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
         private readonly Action<IApplicationBuilder> _app = new XmlFormattersWebSite.Startup().Configure;
         private readonly Action<IServiceCollection> _configureServices = new XmlFormattersWebSite.Startup().ConfigureServices;
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("http://localhost/IEnumerable/ValueTypes")]
         [InlineData("http://localhost/IQueryable/ValueTypes")]
         public async Task CanWrite_ValueTypes(string url)
@@ -42,7 +45,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
                          result);
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("http://localhost/IEnumerable/NonWrappedTypes")]
         [InlineData("http://localhost/IQueryable/NonWrappedTypes")]
         public async Task CanWrite_NonWrappedTypes(string url)
@@ -65,7 +70,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
                          result);
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("http://localhost/IEnumerable/NonWrappedTypes_Empty")]
         [InlineData("http://localhost/IQueryable/NonWrappedTypes_Empty")]
         public async Task CanWrite_NonWrappedTypes_Empty(string url)
@@ -87,7 +94,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
                          result);
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("http://localhost/IEnumerable/NonWrappedTypes_NullInstance")]
         [InlineData("http://localhost/IQueryable/NonWrappedTypes_NullInstance")]
         public async Task CanWrite_NonWrappedTypes_NullInstance(string url)
@@ -109,7 +118,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
                          result);
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("http://localhost/IEnumerable/WrappedTypes")]
         [InlineData("http://localhost/IQueryable/WrappedTypes")]
         public async Task CanWrite_WrappedTypes(string url)
@@ -133,7 +144,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
                 result);
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("http://localhost/IEnumerable/WrappedTypes_Empty")]
         [InlineData("http://localhost/IQueryable/WrappedTypes_Empty")]
         public async Task CanWrite_WrappedTypes_Empty(string url)
@@ -155,7 +168,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
                 result);
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("http://localhost/IEnumerable/WrappedTypes_NullInstance")]
         [InlineData("http://localhost/IQueryable/WrappedTypes_NullInstance")]
         public async Task CanWrite_WrappedTypes_NullInstance(string url)
@@ -177,7 +192,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
                 result);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task CanWrite_IEnumerableOf_SerializableErrors()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/XmlDataContractSerializerInputFormatterTest.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/XmlDataContractSerializerInputFormatterTest.cs
index ffd50864fe..3cf2ada4ea 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/XmlDataContractSerializerInputFormatterTest.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/XmlDataContractSerializerInputFormatterTest.cs
@@ -12,6 +12,7 @@ using System.Runtime.Serialization;
 using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using XmlFormattersWebSite;
 using Xunit;
@@ -32,7 +33,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             nameof(DataMemberAttribute.IsRequired),
             bool.TrueString);
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ThrowsOnInvalidInput_AndAddsToModelState()
         {
             // Arrange
@@ -54,7 +57,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
                 data);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task RequiredDataIsProvided_AndModelIsBound_NoValidationErrors()
         {
             // Arrange
@@ -83,7 +88,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
         }
 
         // Verifies that the model state has errors related to body model validation.
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task DataMissingForRefereneceTypeProperties_AndModelIsBound_AndHasMixedValidationErrors()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/XmlOutputFormatterTests.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/XmlOutputFormatterTests.cs
index a589266d78..80d4ac04af 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/XmlOutputFormatterTests.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/XmlOutputFormatterTests.cs
@@ -9,6 +9,7 @@ using System.Threading.Tasks;
 using FormatterWebSite;
 using Microsoft.AspNet.Builder;
 using Microsoft.AspNet.Mvc.Xml;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Xunit;
 
@@ -20,7 +21,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
         private readonly Action<IApplicationBuilder> _app = new Startup().Configure;
         private readonly Action<IServiceCollection> _configureServices = new Startup().ConfigureServices;
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono.Xml2.XmlTextReader.ReadText is unable to read the XML. This is fixed in mono 4.3.0.
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task XmlDataContractSerializerOutputFormatterIsCalled()
         {
             // Arrange
@@ -65,7 +68,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
                 await response.Content.ReadAsStringAsync());
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task XmlSerializerFailsAndDataContractSerializerIsCalled()
         {
             // Arrange
@@ -111,7 +116,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
                 await response.Content.ReadAsStringAsync());
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono.Xml2.XmlTextReader.ReadText is unable to read the XML. This is fixed in mono 4.3.0.
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task XmlDataContractSerializerOutputFormatter_WhenDerivedClassIsReturned()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.FunctionalTests/XmlSerializerInputFormatterTests.cs b/test/Microsoft.AspNet.Mvc.FunctionalTests/XmlSerializerInputFormatterTests.cs
index d5ead5dd3c..ccef67406f 100644
--- a/test/Microsoft.AspNet.Mvc.FunctionalTests/XmlSerializerInputFormatterTests.cs
+++ b/test/Microsoft.AspNet.Mvc.FunctionalTests/XmlSerializerInputFormatterTests.cs
@@ -7,6 +7,7 @@ using System.Net.Http;
 using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Builder;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.DependencyInjection;
 using Xunit;
 
@@ -38,7 +39,9 @@ namespace Microsoft.AspNet.Mvc.FunctionalTests
             Assert.Equal(sampleInputInt.ToString(), await response.Content.ReadAsStringAsync());
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono.Xml2.XmlTextReader.ReadText is unable to read the XML. This is fixed in mono 4.3.0.
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ThrowsOnInvalidInput_AndAddsToModelState()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.IntegrationTests/BodyValidationIntegrationTests.cs b/test/Microsoft.AspNet.Mvc.IntegrationTests/BodyValidationIntegrationTests.cs
index 5555ce3e15..31838694c8 100644
--- a/test/Microsoft.AspNet.Mvc.IntegrationTests/BodyValidationIntegrationTests.cs
+++ b/test/Microsoft.AspNet.Mvc.IntegrationTests/BodyValidationIntegrationTests.cs
@@ -6,6 +6,7 @@ using System.IO;
 using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Mvc.ModelBinding;
+using Microsoft.AspNet.Testing;
 using Xunit;
 
 namespace Microsoft.AspNet.Mvc.IntegrationTests
@@ -60,7 +61,8 @@ namespace Microsoft.AspNet.Mvc.IntegrationTests
             Assert.Equal("CustomParameter.Address", key);
             Assert.False(modelState.IsValid);
             var error = Assert.Single(modelState[key].Errors);
-            Assert.Equal("The Address field is required.", error.ErrorMessage);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(PlatformNormalizer.NormalizeContent("The Address field is required."), error.ErrorMessage);
         }
 
         [Fact]
@@ -209,7 +211,8 @@ namespace Microsoft.AspNet.Mvc.IntegrationTests
             var street = Assert.Single(modelState, kvp => kvp.Key == "CustomParameter.Address.Street").Value;
             Assert.Equal(ModelValidationState.Invalid, street.ValidationState);
             var error = Assert.Single(street.Errors);
-            Assert.Equal("The Street field is required.", error.ErrorMessage);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(PlatformNormalizer.NormalizeContent("The Street field is required."), error.ErrorMessage);
         }
 
         private class Person3
diff --git a/test/Microsoft.AspNet.Mvc.IntegrationTests/HeaderModelBinderIntegrationTest.cs b/test/Microsoft.AspNet.Mvc.IntegrationTests/HeaderModelBinderIntegrationTest.cs
index dcaaa244bc..04dc1e36c2 100644
--- a/test/Microsoft.AspNet.Mvc.IntegrationTests/HeaderModelBinderIntegrationTest.cs
+++ b/test/Microsoft.AspNet.Mvc.IntegrationTests/HeaderModelBinderIntegrationTest.cs
@@ -62,7 +62,8 @@ namespace Microsoft.AspNet.Mvc.IntegrationTests
             var key = Assert.Single(modelState.Keys);
             Assert.Equal("CustomParameter.Address.Header", key);
             var error = Assert.Single(modelState[key].Errors);
-            Assert.Equal("The Street field is required.", error.ErrorMessage);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(PlatformNormalizer.NormalizeContent("The Street field is required."), error.ErrorMessage);
         }
 
         [Fact]
diff --git a/test/Microsoft.AspNet.Mvc.IntegrationTests/ValidationIntegrationTests.cs b/test/Microsoft.AspNet.Mvc.IntegrationTests/ValidationIntegrationTests.cs
index e69c65cdda..013aeb8475 100644
--- a/test/Microsoft.AspNet.Mvc.IntegrationTests/ValidationIntegrationTests.cs
+++ b/test/Microsoft.AspNet.Mvc.IntegrationTests/ValidationIntegrationTests.cs
@@ -1095,7 +1095,9 @@ namespace Microsoft.AspNet.Mvc.IntegrationTests
 
         private static void AssertRequiredError(string key, ModelError error)
         {
-            Assert.Equal(string.Format("The {0} field is required.", key), error.ErrorMessage);
+            // Mono issue - https://github.com/aspnet/External/issues/19
+            Assert.Equal(PlatformNormalizer.NormalizeContent(
+                string.Format("The {0} field is required.", key)), error.ErrorMessage);
             Assert.Null(error.Exception);
         }
     }
diff --git a/test/Microsoft.AspNet.Mvc.Razor.Host.Test/Directives/ChunkInheritanceUtilityTest.cs b/test/Microsoft.AspNet.Mvc.Razor.Host.Test/Directives/ChunkInheritanceUtilityTest.cs
index dc53c8d209..87116f6ddf 100644
--- a/test/Microsoft.AspNet.Mvc.Razor.Host.Test/Directives/ChunkInheritanceUtilityTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Razor.Host.Test/Directives/ChunkInheritanceUtilityTest.cs
@@ -2,6 +2,7 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using Microsoft.AspNet.Razor.Chunks;
+using Microsoft.AspNet.Testing;
 using Xunit;
 
 namespace Microsoft.AspNet.Mvc.Razor.Directives
@@ -13,10 +14,10 @@ namespace Microsoft.AspNet.Mvc.Razor.Directives
         {
             // Arrange
             var fileProvider = new TestFileProvider();
-            fileProvider.AddFile(@"Views\accounts\_ViewImports.cshtml", "@using AccountModels");
-            fileProvider.AddFile(@"Views\Shared\_ViewImports.cshtml", "@inject SharedHelper Shared");
-            fileProvider.AddFile(@"Views\home\_ViewImports.cshtml", "@using MyNamespace");
-            fileProvider.AddFile(@"Views\_ViewImports.cshtml",
+            fileProvider.AddFile(PlatformNormalizer.NormalizePath(@"Views\accounts\_ViewImports.cshtml"), "@using AccountModels");
+            fileProvider.AddFile(PlatformNormalizer.NormalizePath(@"Views\Shared\_ViewImports.cshtml"), "@inject SharedHelper Shared");
+            fileProvider.AddFile(PlatformNormalizer.NormalizePath(@"Views\home\_ViewImports.cshtml"), "@using MyNamespace");
+            fileProvider.AddFile(PlatformNormalizer.NormalizePath(@"Views\_ViewImports.cshtml"),
 @"@inject MyHelper<TModel> Helper
 @inherits MyBaseType
 
@@ -35,13 +36,13 @@ namespace Microsoft.AspNet.Mvc.Razor.Directives
             var utility = new ChunkInheritanceUtility(host, cache, defaultChunks);
 
             // Act
-            var chunkTrees = utility.GetInheritedChunkTrees(@"Views\home\Index.cshtml");
+            var chunkTrees = utility.GetInheritedChunkTrees(PlatformNormalizer.NormalizePath(@"Views\home\Index.cshtml"));
 
             // Assert
             Assert.Collection(chunkTrees,
                 chunkTree =>
                 {
-                    var viewImportsPath = @"Views\home\_ViewImports.cshtml";
+                    var viewImportsPath = PlatformNormalizer.NormalizePath(@"Views\home\_ViewImports.cshtml");
                     Assert.Collection(chunkTree.Chunks,
                         chunk =>
                         {
@@ -62,7 +63,7 @@ namespace Microsoft.AspNet.Mvc.Razor.Directives
                 },
                 chunkTree =>
                 {
-                    var viewImportsPath = @"Views\_ViewImports.cshtml";
+                    var viewImportsPath = PlatformNormalizer.NormalizePath(@"Views\_ViewImports.cshtml");
                     Assert.Collection(chunkTree.Chunks,
                         chunk =>
                         {
@@ -112,8 +113,8 @@ namespace Microsoft.AspNet.Mvc.Razor.Directives
             // Arrange
             var fileProvider = new TestFileProvider();
             fileProvider.AddFile(@"_ViewImports.cs", string.Empty);
-            fileProvider.AddFile(@"Views\_Layout.cshtml", string.Empty);
-            fileProvider.AddFile(@"Views\home\_not-viewimports.cshtml", string.Empty);
+            fileProvider.AddFile(PlatformNormalizer.NormalizePath(@"Views\_Layout.cshtml"), string.Empty);
+            fileProvider.AddFile(PlatformNormalizer.NormalizePath(@"Views\home\_not-viewimports.cshtml"), string.Empty);
             var cache = new DefaultChunkTreeCache(fileProvider);
             var host = new MvcRazorHost(cache);
             var defaultChunks = new Chunk[]
@@ -124,7 +125,7 @@ namespace Microsoft.AspNet.Mvc.Razor.Directives
             var utility = new ChunkInheritanceUtility(host, cache, defaultChunks);
 
             // Act
-            var chunkTrees = utility.GetInheritedChunkTrees(@"Views\home\Index.cshtml");
+            var chunkTrees = utility.GetInheritedChunkTrees(PlatformNormalizer.NormalizePath(@"Views\home\Index.cshtml"));
 
             // Assert
             Assert.Empty(chunkTrees);
@@ -135,7 +136,7 @@ namespace Microsoft.AspNet.Mvc.Razor.Directives
         {
             // Arrange
             var fileProvider = new TestFileProvider();
-            fileProvider.AddFile(@"Views\_ViewImports.cshtml",
+            fileProvider.AddFile(PlatformNormalizer.NormalizePath(@"Views\_ViewImports.cshtml"),
                                "@inject DifferentHelper<TModel> Html");
             var cache = new DefaultChunkTreeCache(fileProvider);
             var host = new MvcRazorHost(cache);
diff --git a/test/Microsoft.AspNet.Mvc.Razor.Host.Test/MvcCSharpRazorCodeParserTest.cs b/test/Microsoft.AspNet.Mvc.Razor.Host.Test/MvcCSharpRazorCodeParserTest.cs
index 1a3c5c03c9..1296ea07e5 100644
--- a/test/Microsoft.AspNet.Mvc.Razor.Host.Test/MvcCSharpRazorCodeParserTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Razor.Host.Test/MvcCSharpRazorCodeParserTest.cs
@@ -78,7 +78,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     .Accepts(AcceptedCharacters.None),
                 factory.MetaCode("model ")
                     .Accepts(AcceptedCharacters.None),
-                factory.Code(modelName + "\r\n")
+                factory.Code(modelName + Environment.NewLine)
                     .As(new ModelChunkGenerator("RazorView", expectedModel))
                     .Accepts(AcceptedCharacters.AnyExceptNewline),
                 factory.Markup("Bar")
@@ -141,7 +141,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     .Accepts(AcceptedCharacters.None),
                 factory.MetaCode("model ")
                     .Accepts(AcceptedCharacters.None),
-                factory.Code("Foo\r\n")
+                factory.Code("Foo" + Environment.NewLine)
                     .As(new ModelChunkGenerator("RazorView", "Foo"))
                     .Accepts(AcceptedCharacters.AnyExceptNewline),
                 factory.EmptyHtml(),
@@ -157,8 +157,10 @@ namespace Microsoft.AspNet.Mvc.Razor
 
             var expectedErrors = new[]
             {
-                new RazorError("Only one 'model' statement is allowed in a file.",
-                                new SourceLocation(13, 1, 1), 5)
+                new RazorError(
+                    "Only one 'model' statement is allowed in a file.",
+                    PlatformNormalizer.NormalizedSourceLocation(13, 1, 1),
+                    5)
             };
 
             // Act
@@ -186,7 +188,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     .Accepts(AcceptedCharacters.None),
                 factory.MetaCode("model ")
                     .Accepts(AcceptedCharacters.None),
-                factory.Code("Foo\r\n")
+                factory.Code("Foo" + Environment.NewLine)
                     .As(new ModelChunkGenerator("RazorView", "Foo"))
                     .Accepts(AcceptedCharacters.AnyExceptNewline),
                 factory.EmptyHtml(),
@@ -202,8 +204,10 @@ namespace Microsoft.AspNet.Mvc.Razor
 
             var expectedErrors = new[]
             {
-                new RazorError("The 'inherits' keyword is not allowed when a 'model' keyword is used.",
-                               new SourceLocation(21, 1, 9), 1)
+                new RazorError(
+                    "The 'inherits' keyword is not allowed when a 'model' keyword is used.",
+                    PlatformNormalizer.NormalizedSourceLocation(21, 1, 9),
+                    1)
             };
 
             // Act
@@ -357,7 +361,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     .Accepts(AcceptedCharacters.None),
                 factory.MetaCode("inject ")
                     .Accepts(AcceptedCharacters.None),
-                factory.Code(injectStatement + "\r\n")
+                factory.Code(injectStatement + Environment.NewLine)
                     .As(new InjectParameterGenerator(expectedService, expectedPropertyName))
                     .Accepts(AcceptedCharacters.AnyExceptNewline),
                 factory.Markup("Bar")
@@ -377,7 +381,7 @@ namespace Microsoft.AspNet.Mvc.Razor
         {
             // Arrange
             var errors = new List<RazorError>();
-            var documentContent = "@inject    " + Environment.NewLine + "Bar";
+            var documentContent = $"@inject    {Environment.NewLine}Bar";
             var factory = SpanFactory.CreateCsHtml();
             var expectedSpans = new Span[]
             {
@@ -386,7 +390,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     .Accepts(AcceptedCharacters.None),
                 factory.MetaCode("inject ")
                     .Accepts(AcceptedCharacters.None),
-                factory.Code("   \r\n")
+                factory.Code("   " + Environment.NewLine)
                     .As(new InjectParameterGenerator(string.Empty, string.Empty))
                     .Accepts(AcceptedCharacters.AnyExceptNewline),
                 factory.Markup("Bar")
@@ -444,7 +448,7 @@ namespace Microsoft.AspNet.Mvc.Razor
         {
             // Arrange
             var errors = new List<RazorError>();
-            var documentContent = "@inject   IMyService  \r\nBar";
+            var documentContent = $"@inject   IMyService  {Environment.NewLine}Bar";
             var factory = SpanFactory.CreateCsHtml();
             var expectedSpans = new Span[]
             {
@@ -453,7 +457,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     .Accepts(AcceptedCharacters.None),
                 factory.MetaCode("inject ")
                     .Accepts(AcceptedCharacters.None),
-                factory.Code("  IMyService  \r\n")
+                factory.Code("  IMyService  " + Environment.NewLine)
                     .As(new InjectParameterGenerator("IMyService", string.Empty))
                     .Accepts(AcceptedCharacters.AnyExceptNewline),
                 factory.Markup("Bar")
diff --git a/test/Microsoft.AspNet.Mvc.Razor.Host.Test/MvcRazorHostTest.cs b/test/Microsoft.AspNet.Mvc.Razor.Host.Test/MvcRazorHostTest.cs
index 704c81e239..5b34fcf2a0 100644
--- a/test/Microsoft.AspNet.Mvc.Razor.Host.Test/MvcRazorHostTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Razor.Host.Test/MvcRazorHostTest.cs
@@ -19,6 +19,7 @@ using Microsoft.AspNet.Razor.Chunks.Generators;
 using Microsoft.AspNet.Razor.CodeGenerators;
 using Microsoft.AspNet.Razor.CodeGenerators.Visitors;
 using Microsoft.AspNet.Razor.Parser;
+using Microsoft.AspNet.Testing;
 using Microsoft.Framework.Internal;
 using Xunit;
 
@@ -28,11 +29,26 @@ namespace Microsoft.AspNet.Mvc.Razor
     {
         private static Assembly _assembly = typeof(MvcRazorHostTest).Assembly;
 
+        public static TheoryData NormalizeChunkInheritanceUtilityPaths_Data
+        {
+            get
+            {
+                var data = new TheoryData<string> { "//" };
+
+                // The following scenarios are not relevant in Mono.
+                if (!TestPlatformHelper.IsMono)
+                {
+                    data.Add("C:/");
+                    data.Add(@"\\");
+                    data.Add(@"C:\");
+                }
+
+                return data;
+            }
+        }
+
         [Theory]
-        [InlineData("//")]
-        [InlineData("C:/")]
-        [InlineData(@"\\")]
-        [InlineData(@"C:\")]
+        [MemberData(nameof(NormalizeChunkInheritanceUtilityPaths_Data))]
         public void DecorateRazorParser_DesignTimeRazorPathNormalizer_NormalizesChunkInheritanceUtilityPaths(
             string rootPrefix)
         {
@@ -57,10 +73,7 @@ namespace Microsoft.AspNet.Mvc.Razor
         }
 
         [Theory]
-        [InlineData("//")]
-        [InlineData("C:/")]
-        [InlineData(@"\\")]
-        [InlineData(@"C:\")]
+        [MemberData(nameof(NormalizeChunkInheritanceUtilityPaths_Data))]
         public void DecorateCodeGenerator_DesignTimeRazorPathNormalizer_NormalizesChunkInheritanceUtilityPaths(
             string rootPrefix)
         {
@@ -108,7 +121,7 @@ namespace Microsoft.AspNet.Mvc.Razor
         {
             // Arrange
             var fileProvider = new TestFileProvider();
-            var host = new MvcRazorHost(new DefaultChunkTreeCache(fileProvider))
+            var host = new MvcRazorHostWithNormalizedNewLine(new DefaultChunkTreeCache(fileProvider))
             {
                 DesignTimeMode = true
             };
@@ -118,7 +131,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     documentAbsoluteIndex: 7,
                     documentLineIndex: 0,
                     documentCharacterIndex: 7,
-                    generatedAbsoluteIndex: 444,
+                    generatedAbsoluteIndex: 432,
                     generatedLineIndex: 12,
                     generatedCharacterIndex: 7,
                     contentLength: 8),
@@ -126,7 +139,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     documentAbsoluteIndex: 31,
                     documentLineIndex: 2,
                     documentCharacterIndex: 14,
-                    generatedAbsoluteIndex: 823,
+                    generatedAbsoluteIndex: 798,
                     generatedLineIndex: 25,
                     generatedCharacterIndex: 14,
                     contentLength: 85),
@@ -134,7 +147,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     documentAbsoluteIndex: 135,
                     documentLineIndex: 4,
                     documentCharacterIndex: 17,
-                    generatedAbsoluteIndex: 2313,
+                    generatedAbsoluteIndex: 2258,
                     generatedLineIndex: 55,
                     generatedCharacterIndex: 95,
                     contentLength: 3),
@@ -142,7 +155,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     documentAbsoluteIndex: 161,
                     documentLineIndex: 5,
                     documentCharacterIndex: 18,
-                    generatedAbsoluteIndex: 2626,
+                    generatedAbsoluteIndex: 2565,
                     generatedLineIndex: 61,
                     generatedCharacterIndex: 87,
                     contentLength: 5),
@@ -176,7 +189,7 @@ namespace Microsoft.AspNet.Mvc.Razor
         {
             // Arrange
             var fileProvider = new TestFileProvider();
-            var host = new MvcRazorHost(new DefaultChunkTreeCache(fileProvider))
+            var host = new MvcRazorHostWithNormalizedNewLine(new DefaultChunkTreeCache(fileProvider))
             {
                 DesignTimeMode = true
             };
@@ -187,7 +200,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     documentAbsoluteIndex: 13,
                     documentLineIndex: 0,
                     documentCharacterIndex: 13,
-                    generatedAbsoluteIndex: 1269,
+                    generatedAbsoluteIndex: 1237,
                     generatedLineIndex: 32,
                     generatedCharacterIndex: 13,
                     contentLength: 4),
@@ -195,7 +208,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     documentAbsoluteIndex: 41,
                     documentLineIndex: 2,
                     documentCharacterIndex: 5,
-                    generatedAbsoluteIndex: 1353,
+                    generatedAbsoluteIndex: 1316,
                     generatedLineIndex: 37,
                     generatedCharacterIndex: 6,
                     contentLength: 21),
@@ -210,7 +223,7 @@ namespace Microsoft.AspNet.Mvc.Razor
         {
             // Arrange
             var fileProvider = new TestFileProvider();
-            var host = new MvcRazorHost(new DefaultChunkTreeCache(fileProvider))
+            var host = new MvcRazorHostWithNormalizedNewLine(new DefaultChunkTreeCache(fileProvider))
             {
                 DesignTimeMode = true
             };
@@ -221,7 +234,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     documentAbsoluteIndex: 1,
                     documentLineIndex: 0,
                     documentCharacterIndex: 1,
-                    generatedAbsoluteIndex: 59,
+                    generatedAbsoluteIndex: 56,
                     generatedLineIndex: 3,
                     generatedCharacterIndex: 0,
                     contentLength: 17),
@@ -229,7 +242,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     documentAbsoluteIndex: 27,
                     documentLineIndex: 1,
                     documentCharacterIndex: 8,
-                    generatedAbsoluteIndex: 706,
+                    generatedAbsoluteIndex: 680,
                     generatedLineIndex: 26,
                     generatedCharacterIndex: 8,
                     contentLength: 20),
@@ -244,7 +257,7 @@ namespace Microsoft.AspNet.Mvc.Razor
         {
             // Arrange
             var fileProvider = new TestFileProvider();
-            var host = new MvcRazorHost(new DefaultChunkTreeCache(fileProvider))
+            var host = new MvcRazorHostWithNormalizedNewLine(new DefaultChunkTreeCache(fileProvider))
             {
                 DesignTimeMode = true
             };
@@ -255,7 +268,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     documentAbsoluteIndex: 7,
                     documentLineIndex: 0,
                     documentCharacterIndex: 7,
-                    generatedAbsoluteIndex: 214,
+                    generatedAbsoluteIndex: 208,
                     generatedLineIndex: 6,
                     generatedCharacterIndex: 7,
                     contentLength: 7),
@@ -263,7 +276,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     documentAbsoluteIndex: 23,
                     documentLineIndex: 1,
                     documentCharacterIndex: 8,
-                    generatedAbsoluteIndex: 731,
+                    generatedAbsoluteIndex: 705,
                     generatedLineIndex: 26,
                     generatedCharacterIndex: 8,
                     contentLength: 20),
@@ -271,7 +284,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     documentAbsoluteIndex: 52,
                     documentLineIndex: 2,
                     documentCharacterIndex: 8,
-                    generatedAbsoluteIndex: 957,
+                    generatedAbsoluteIndex: 923,
                     generatedLineIndex: 34,
                     generatedCharacterIndex: 8,
                     contentLength: 23),
@@ -286,7 +299,7 @@ namespace Microsoft.AspNet.Mvc.Razor
         {
             // Arrange
             var fileProvider = new TestFileProvider();
-            var host = new MvcRazorHost(new DefaultChunkTreeCache(fileProvider))
+            var host = new MvcRazorHostWithNormalizedNewLine(new DefaultChunkTreeCache(fileProvider))
             {
                 DesignTimeMode = true
             };
@@ -297,7 +310,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     documentAbsoluteIndex: 7,
                     documentLineIndex: 0,
                     documentCharacterIndex: 7,
-                    generatedAbsoluteIndex: 222,
+                    generatedAbsoluteIndex: 216,
                     generatedLineIndex: 6,
                     generatedCharacterIndex: 7,
                     contentLength: 7),
@@ -305,7 +318,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     documentAbsoluteIndex: 23,
                     documentLineIndex: 1,
                     documentCharacterIndex: 8,
-                    generatedAbsoluteIndex: 747,
+                    generatedAbsoluteIndex: 721,
                     generatedLineIndex: 26,
                     generatedCharacterIndex: 8,
                     contentLength: 20),
@@ -313,7 +326,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     documentAbsoluteIndex: 56,
                     documentLineIndex: 2,
                     documentCharacterIndex: 8,
-                    generatedAbsoluteIndex: 977,
+                    generatedAbsoluteIndex: 943,
                     generatedLineIndex: 34,
                     generatedCharacterIndex: 8,
                     contentLength: 23),
@@ -321,7 +334,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     documentAbsoluteIndex: 90,
                     documentLineIndex: 3,
                     documentCharacterIndex: 8,
-                    generatedAbsoluteIndex: 1210,
+                    generatedAbsoluteIndex: 1168,
                     generatedLineIndex: 42,
                     generatedCharacterIndex: 8,
                     contentLength: 21),
@@ -329,7 +342,7 @@ namespace Microsoft.AspNet.Mvc.Razor
                     documentAbsoluteIndex: 125,
                     documentLineIndex: 4,
                     documentCharacterIndex: 8,
-                    generatedAbsoluteIndex: 1441,
+                    generatedAbsoluteIndex: 1391,
                     generatedLineIndex: 50,
                     generatedCharacterIndex: 8,
                     contentLength: 24),
@@ -344,14 +357,14 @@ namespace Microsoft.AspNet.Mvc.Razor
         {
             // Arrange
             var fileProvider = new TestFileProvider();
-            var host = new MvcRazorHost(new DefaultChunkTreeCache(fileProvider))
+            var host = new MvcRazorHostWithNormalizedNewLine(new DefaultChunkTreeCache(fileProvider))
             {
                 DesignTimeMode = true
             };
             host.NamespaceImports.Clear();
             var expectedLineMappings = new[]
             {
-                BuildLineMapping(7, 0, 7, 194, 6, 7, 30),
+                BuildLineMapping(7, 0, 7, 188, 6, 7, 30),
             };
 
             // Act and Assert
@@ -481,6 +494,55 @@ namespace Microsoft.AspNet.Mvc.Razor
             }
         }
 
+        // Normalizes the newlines in different OS platforms.
+        private class MvcRazorHostWithNormalizedNewLine : MvcRazorHost
+        {
+            public MvcRazorHostWithNormalizedNewLine(IChunkTreeCache codeTreeCache)
+                : base(codeTreeCache)
+            { }
+
+            public override CodeGenerator DecorateCodeGenerator(
+                CodeGenerator incomingBuilder,
+                CodeGeneratorContext context)
+            {
+                base.DecorateCodeGenerator(incomingBuilder, context);
+
+                return new TestCSharpCodeGenerator(
+                    context,
+                    DefaultModel,
+                    "Microsoft.AspNet.Mvc.Razor.Internal.RazorInjectAttribute",
+                    new GeneratedTagHelperAttributeContext
+                    {
+                        ModelExpressionTypeName = ModelExpressionType,
+                        CreateModelExpressionMethodName = CreateModelExpressionMethod
+                    });
+            }
+
+            protected class TestCSharpCodeGenerator : MvcCSharpCodeGenerator
+            {
+                private readonly GeneratedTagHelperAttributeContext _tagHelperAttributeContext;
+
+                public TestCSharpCodeGenerator(CodeGeneratorContext context,
+                                             string defaultModel,
+                                             string activateAttribute,
+                                             GeneratedTagHelperAttributeContext tagHelperAttributeContext)
+                    : base(context, defaultModel, activateAttribute, tagHelperAttributeContext)
+                {
+                    _tagHelperAttributeContext = tagHelperAttributeContext;
+                }
+
+                protected override CSharpCodeWriter CreateCodeWriter()
+                {
+                    // We normalize newlines so no matter what platform we're on 
+                    // they're consistent (for code generation tests).
+                    var codeWriter = base.CreateCodeWriter();
+                    codeWriter.NewLine = "\n";
+
+                    return codeWriter;
+                }
+            }
+        }
+
         /// <summary>
         /// Used when testing Tag Helpers, it disables the unique ID generation feature.
         /// </summary>
diff --git a/test/Microsoft.AspNet.Mvc.Razor.Host.Test/ViewHierarchyUtilityTest.cs b/test/Microsoft.AspNet.Mvc.Razor.Host.Test/ViewHierarchyUtilityTest.cs
index d82148d8c6..8b9da981fe 100644
--- a/test/Microsoft.AspNet.Mvc.Razor.Host.Test/ViewHierarchyUtilityTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Razor.Host.Test/ViewHierarchyUtilityTest.cs
@@ -2,6 +2,8 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.IO;
+using Microsoft.AspNet.Testing;
+using Microsoft.AspNet.Testing.xunit;
 using Xunit;
 
 namespace Microsoft.AspNet.Mvc.Razor
@@ -41,8 +43,8 @@ namespace Microsoft.AspNet.Mvc.Razor
             // Arrange
             var expected = new[]
             {
-                @"Views\Home\_ViewStart.cshtml",
-                @"Views\_ViewStart.cshtml",
+                PlatformNormalizer.NormalizePath(@"Views\Home\_ViewStart.cshtml"),
+                PlatformNormalizer.NormalizePath(@"Views\_ViewStart.cshtml"),
                 @"_ViewStart.cshtml"
             };
 
@@ -62,8 +64,8 @@ namespace Microsoft.AspNet.Mvc.Razor
             // Arrange
             var expected = new[]
             {
-                @"Views\Home\_ViewImports.cshtml",
-                @"Views\_ViewImports.cshtml",
+                PlatformNormalizer.NormalizePath(@"Views\Home\_ViewImports.cshtml"),
+                PlatformNormalizer.NormalizePath(@"Views\_ViewImports.cshtml"),
                 @"_ViewImports.cshtml"
             };
 
@@ -83,7 +85,7 @@ namespace Microsoft.AspNet.Mvc.Razor
             // Arrange
             var expected = new[]
             {
-                @"Views\_ViewStart.cshtml",
+                PlatformNormalizer.NormalizePath(@"Views\_ViewStart.cshtml"),
                 @"_ViewStart.cshtml"
             };
 
@@ -103,8 +105,8 @@ namespace Microsoft.AspNet.Mvc.Razor
             // Arrange
             var expected = new[]
             {
-                @"Views\Home\_ViewImports.cshtml",
-                @"Views\_ViewImports.cshtml",
+                PlatformNormalizer.NormalizePath(@"Views\Home\_ViewImports.cshtml"),
+                PlatformNormalizer.NormalizePath(@"Views\_ViewImports.cshtml"),
                 @"_ViewImports.cshtml"
             };
 
@@ -124,7 +126,7 @@ namespace Microsoft.AspNet.Mvc.Razor
             // Arrange
             var expected = new[]
             {
-                @"Views\_ViewImports.cshtml",
+                PlatformNormalizer.NormalizePath(@"Views\_ViewImports.cshtml"),
                 @"_ViewImports.cshtml"
             };
 
@@ -143,11 +145,11 @@ namespace Microsoft.AspNet.Mvc.Razor
             // Arrange
             var expected = new[]
             {
-                @"Areas\MyArea\Sub\Views\Admin\_ViewStart.cshtml",
-                @"Areas\MyArea\Sub\Views\_ViewStart.cshtml",
-                @"Areas\MyArea\Sub\_ViewStart.cshtml",
-                @"Areas\MyArea\_ViewStart.cshtml",
-                @"Areas\_ViewStart.cshtml",
+                PlatformNormalizer.NormalizePath(@"Areas\MyArea\Sub\Views\Admin\_ViewStart.cshtml"),
+                PlatformNormalizer.NormalizePath(@"Areas\MyArea\Sub\Views\_ViewStart.cshtml"),
+                PlatformNormalizer.NormalizePath(@"Areas\MyArea\Sub\_ViewStart.cshtml"),
+                PlatformNormalizer.NormalizePath(@"Areas\MyArea\_ViewStart.cshtml"),
+                PlatformNormalizer.NormalizePath(@"Areas\_ViewStart.cshtml"),
                 @"_ViewStart.cshtml",
             };
             var viewPath = Path.Combine("Areas", "MyArea", "Sub", "Views", "Admin", fileName);
@@ -168,11 +170,11 @@ namespace Microsoft.AspNet.Mvc.Razor
             // Arrange
             var expected = new[]
             {
-                @"Areas\MyArea\Sub\Views\Admin\_ViewImports.cshtml",
-                @"Areas\MyArea\Sub\Views\_ViewImports.cshtml",
-                @"Areas\MyArea\Sub\_ViewImports.cshtml",
-                @"Areas\MyArea\_ViewImports.cshtml",
-                @"Areas\_ViewImports.cshtml",
+                PlatformNormalizer.NormalizePath(@"Areas\MyArea\Sub\Views\Admin\_ViewImports.cshtml"),
+                PlatformNormalizer.NormalizePath(@"Areas\MyArea\Sub\Views\_ViewImports.cshtml"),
+                PlatformNormalizer.NormalizePath(@"Areas\MyArea\Sub\_ViewImports.cshtml"),
+                PlatformNormalizer.NormalizePath(@"Areas\MyArea\_ViewImports.cshtml"),
+                PlatformNormalizer.NormalizePath(@"Areas\_ViewImports.cshtml"),
                 @"_ViewImports.cshtml",
             };
             var viewPath = Path.Combine("Areas", "MyArea", "Sub", "Views", "Admin", fileName);
@@ -192,10 +194,10 @@ namespace Microsoft.AspNet.Mvc.Razor
             // Arrange
             var expected = new[]
             {
-                @"Areas\MyArea\Sub\Views\_ViewStart.cshtml",
-                @"Areas\MyArea\Sub\_ViewStart.cshtml",
-                @"Areas\MyArea\_ViewStart.cshtml",
-                @"Areas\_ViewStart.cshtml",
+                PlatformNormalizer.NormalizePath(@"Areas\MyArea\Sub\Views\_ViewStart.cshtml"),
+                PlatformNormalizer.NormalizePath(@"Areas\MyArea\Sub\_ViewStart.cshtml"),
+                PlatformNormalizer.NormalizePath(@"Areas\MyArea\_ViewStart.cshtml"),
+                PlatformNormalizer.NormalizePath(@"Areas\_ViewStart.cshtml"),
                 @"_ViewStart.cshtml",
             };
             var viewPath = Path.Combine("Areas", "MyArea", "Sub", "Views", "Admin", fileName);
@@ -220,7 +222,9 @@ namespace Microsoft.AspNet.Mvc.Razor
             Assert.Empty(result);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // https://github.com/aspnet/Mvc/issues/2745
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void GetViewStartLocations_ReturnsEmptySequence_IfPathIsRooted()
         {
             // Arrange
@@ -233,7 +237,9 @@ namespace Microsoft.AspNet.Mvc.Razor
             Assert.Empty(result);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // https://github.com/aspnet/Mvc/issues/2745
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void GetViewImportsLocations_ReturnsEmptySequence_IfPathIsRooted()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.Razor.Test/Compilation/CompilerCacheTest.cs b/test/Microsoft.AspNet.Mvc.Razor.Test/Compilation/CompilerCacheTest.cs
index 8ff44f34d2..f4247b1702 100644
--- a/test/Microsoft.AspNet.Mvc.Razor.Test/Compilation/CompilerCacheTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Razor.Test/Compilation/CompilerCacheTest.cs
@@ -11,6 +11,7 @@ using System.Text;
 using Microsoft.AspNet.FileProviders;
 using Microsoft.AspNet.Mvc.Razor.Internal;
 using Microsoft.AspNet.Mvc.Razor.Precompilation;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.Runtime;
 using Moq;
 using Xunit;
@@ -348,7 +349,9 @@ namespace Microsoft.AspNet.Mvc.Razor.Compilation
             mockFileProvider.Verify(v => v.GetFileInfo(ViewPath), Times.Once());
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Skipping for now since this is going to change.
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void GetOrAdd_IgnoresCachedValueIfFileIsIdentical_ButViewImportsWasAdedSinceTheCacheWasCreated()
         {
             // Arrange
@@ -390,7 +393,9 @@ namespace Microsoft.AspNet.Mvc.Razor.Compilation
             Assert.Equal(expectedType, actual2.CompiledType);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Skipping for now since this is going to change.
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void GetOrAdd_IgnoresCachedValueIfFileIsIdentical_ButGlobalWasDeletedSinceCacheWasCreated()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.Razor.Test/LanguageViewLocationExpanderTest.cs b/test/Microsoft.AspNet.Mvc.Razor.Test/LanguageViewLocationExpanderTest.cs
index 42099969e6..807b54f6f9 100644
--- a/test/Microsoft.AspNet.Mvc.Razor.Test/LanguageViewLocationExpanderTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Razor.Test/LanguageViewLocationExpanderTest.cs
@@ -171,7 +171,7 @@ namespace Microsoft.AspNet.Mvc.Razor
             var viewLocationExpanderContext = new ViewLocationExpanderContext(new ActionContext(), "testView", false);
             var languageViewLocationExpander = new LanguageViewLocationExpander();
             viewLocationExpanderContext.Values = new Dictionary<string, string>();
-            viewLocationExpanderContext.Values["language"] = "gb";
+            viewLocationExpanderContext.Values["language"] = "!-invalid-culture-!";
 
             // Act
             var expandedViewLocations = languageViewLocationExpander.ExpandViewLocations(
diff --git a/test/Microsoft.AspNet.Mvc.Razor.Test/MvcRazorCodeParserTest.cs b/test/Microsoft.AspNet.Mvc.Razor.Test/MvcRazorCodeParserTest.cs
index d7ee5fa208..e7073c61d9 100644
--- a/test/Microsoft.AspNet.Mvc.Razor.Test/MvcRazorCodeParserTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Razor.Test/MvcRazorCodeParserTest.cs
@@ -54,7 +54,7 @@ namespace Microsoft.AspNet.Mvc.Razor.Host.Test
         public void ParseModelKeyword_HandlesNullableTypes()
         {
             // Arrange + Act
-            var document = "@model Foo?\r\nBar";
+            var document = $"@model Foo?{Environment.NewLine}Bar";
             var spans = ParseDocument(document);
 
             // Assert
@@ -66,7 +66,7 @@ namespace Microsoft.AspNet.Mvc.Razor.Host.Test
                     .Accepts(AcceptedCharacters.None),
                 factory.MetaCode("model ")
                     .Accepts(AcceptedCharacters.None),
-                factory.Code("Foo?\r\n")
+                factory.Code("Foo?" + Environment.NewLine)
                     .As(new ModelChunkGenerator(DefaultBaseType, "Foo?"))
                     .Accepts(AcceptedCharacters.AnyExceptNewline),
                 factory.Markup("Bar")
@@ -79,7 +79,7 @@ namespace Microsoft.AspNet.Mvc.Razor.Host.Test
         public void ParseModelKeyword_HandlesArrays()
         {
             // Arrange + Act
-            var document = "@model Foo[[]][]\r\nBar";
+            var document = $"@model Foo[[]][]{Environment.NewLine}Bar";
             var spans = ParseDocument(document);
 
             // Assert
@@ -91,7 +91,7 @@ namespace Microsoft.AspNet.Mvc.Razor.Host.Test
                     .Accepts(AcceptedCharacters.None),
                 factory.MetaCode("model ")
                     .Accepts(AcceptedCharacters.None),
-                factory.Code("Foo[[]][]\r\n")
+                factory.Code("Foo[[]][]" + Environment.NewLine)
                     .As(new ModelChunkGenerator(DefaultBaseType, "Foo[[]][]"))
                     .Accepts(AcceptedCharacters.AnyExceptNewline),
                 factory.Markup("Bar")
@@ -173,7 +173,7 @@ namespace Microsoft.AspNet.Mvc.Razor.Host.Test
                     .Accepts(AcceptedCharacters.None),
                 factory.MetaCode("model ")
                     .Accepts(AcceptedCharacters.None),
-                factory.Code("Foo\r\n")
+                factory.Code("Foo" + Environment.NewLine)
                     .As(new ModelChunkGenerator(DefaultBaseType, "Foo"))
                     .Accepts(AcceptedCharacters.AnyExceptNewline),
                 factory.EmptyHtml(),
@@ -189,7 +189,10 @@ namespace Microsoft.AspNet.Mvc.Razor.Host.Test
 
             var expectedErrors = new[]
             {
-                new RazorError("Only one 'model' statement is allowed in a file.", new SourceLocation(13, 1, 1), 5)
+                new RazorError(
+                    "Only one 'model' statement is allowed in a file.",
+                    PlatformNormalizer.NormalizedSourceLocation(13, 1, 1),
+                    5)
             };
             expectedSpans.Zip(spans, (exp, span) => new { expected = exp, span = span }).ToList().ForEach(i => Assert.Equal(i.expected, i.span));
             Assert.Equal(expectedSpans, spans.ToArray());
@@ -215,7 +218,7 @@ namespace Microsoft.AspNet.Mvc.Razor.Host.Test
                     .Accepts(AcceptedCharacters.None),
                 factory.MetaCode("model ")
                     .Accepts(AcceptedCharacters.None),
-                factory.Code("Foo\r\n")
+                factory.Code("Foo" + Environment.NewLine)
                     .As(new ModelChunkGenerator(DefaultBaseType, "Foo"))
                     .Accepts(AcceptedCharacters.AnyExceptNewline),
                 factory.EmptyHtml(),
@@ -231,7 +234,10 @@ namespace Microsoft.AspNet.Mvc.Razor.Host.Test
 
             var expectedErrors = new[]
             {
-                new RazorError("The 'inherits' keyword is not allowed when a 'model' keyword is used.", new SourceLocation(21, 1, 9), 1)
+                new RazorError(
+                    "The 'inherits' keyword is not allowed when a 'model' keyword is used.",
+                    PlatformNormalizer.NormalizedSourceLocation(21, 1, 9),
+                    1)
             };
             expectedSpans.Zip(spans, (exp, span) => new { expected = exp, span = span }).ToList().ForEach(i => Assert.Equal(i.expected, i.span));
             Assert.Equal(expectedSpans, spans.ToArray());
diff --git a/test/Microsoft.AspNet.Mvc.Razor.Test/RazorFileHashTest.cs b/test/Microsoft.AspNet.Mvc.Razor.Test/RazorFileHashTest.cs
index 3a50a74800..7006133fc3 100644
--- a/test/Microsoft.AspNet.Mvc.Razor.Test/RazorFileHashTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Razor.Test/RazorFileHashTest.cs
@@ -31,7 +31,7 @@ namespace Microsoft.AspNet.Mvc.Razor.Compilation
                     new[] { "Hello world", "2346098258" },
                     new[] { "hello world", "222957957" },
                     new[] { "The quick brown fox jumped over the lazy dog", "2765681502" },
-                    new[] { longString, "1994223647" },
+                    new[] { longString, TestPlatformHelper.IsMono ? "4106555590" : "1994223647" },
                     new[] { stringWith4kChars.Substring(1), "2679155331" }, // 4095 chars
                     new[] { stringWith4kChars, "2627329139" },
                     new[] { stringWith4kChars + "a", "556205849" }, // 4097 chars
diff --git a/test/Microsoft.AspNet.Mvc.TagHelpers.Test/ImageTagHelperTest.cs b/test/Microsoft.AspNet.Mvc.TagHelpers.Test/ImageTagHelperTest.cs
index 3ce2b4fa25..950e0906ee 100644
--- a/test/Microsoft.AspNet.Mvc.TagHelpers.Test/ImageTagHelperTest.cs
+++ b/test/Microsoft.AspNet.Mvc.TagHelpers.Test/ImageTagHelperTest.cs
@@ -12,6 +12,7 @@ using Microsoft.AspNet.Hosting;
 using Microsoft.AspNet.Http.Internal;
 using Microsoft.AspNet.Mvc.ModelBinding;
 using Microsoft.AspNet.Mvc.Rendering;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.AspNet.Razor.Runtime.TagHelpers;
 using Microsoft.AspNet.Routing;
 using Microsoft.Framework.Caching;
@@ -80,7 +81,9 @@ namespace Microsoft.AspNet.Mvc.TagHelpers
             }
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void RendersImageTag_AddsFileVersion()
         {
             // Arrange
@@ -152,7 +155,9 @@ namespace Microsoft.AspNet.Mvc.TagHelpers
             Assert.Equal("/images/test-image.png", srcAttribute.Value);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void RendersImageTag_AddsFileVersion_WithRequestPathBase()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.TagHelpers.Test/Internal/FileVersionProviderTest.cs b/test/Microsoft.AspNet.Mvc.TagHelpers.Test/Internal/FileVersionProviderTest.cs
index b75a679a50..85aa606f18 100644
--- a/test/Microsoft.AspNet.Mvc.TagHelpers.Test/Internal/FileVersionProviderTest.cs
+++ b/test/Microsoft.AspNet.Mvc.TagHelpers.Test/Internal/FileVersionProviderTest.cs
@@ -7,6 +7,7 @@ using System.Text;
 using Microsoft.AspNet.FileProviders;
 using Microsoft.AspNet.Hosting;
 using Microsoft.AspNet.Http;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.Caching;
 using Microsoft.Framework.Caching.Memory;
 using Moq;
@@ -16,7 +17,9 @@ namespace Microsoft.AspNet.Mvc.TagHelpers.Internal
 {
     public class FileVersionProviderTest
     {
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("/hello/world", "/hello/world?v=f4OxZX_x_FO5LcGBSKHWXfwtSx-j1ncoSt3SABJtkGk")]
         [InlineData("/hello/world?q=test", "/hello/world?q=test&v=f4OxZX_x_FO5LcGBSKHWXfwtSx-j1ncoSt3SABJtkGk")]
         [InlineData("/hello/world?q=foo&bar", "/hello/world?q=foo&bar&v=f4OxZX_x_FO5LcGBSKHWXfwtSx-j1ncoSt3SABJtkGk")]
@@ -37,7 +40,9 @@ namespace Microsoft.AspNet.Mvc.TagHelpers.Internal
         }
 
         // Verifies if the stream is closed after reading.
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void AddsVersionToFiles_DoesNotLockFileAfterReading()
         {
             // Arrange
@@ -68,7 +73,9 @@ namespace Microsoft.AspNet.Mvc.TagHelpers.Internal
             Assert.Throws<ObjectDisposedException>(() => fileVersionProvider.AddFileVersionToPath("/hello/world"));
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("/testApp/hello/world", true, "/testApp")]
         [InlineData("/testApp/foo/bar/hello/world", true, "/testApp/foo/bar")]
         [InlineData("/test/testApp/hello/world", false, "/testApp")]
@@ -91,7 +98,9 @@ namespace Microsoft.AspNet.Mvc.TagHelpers.Internal
             Assert.Equal(filePath + "?v=f4OxZX_x_FO5LcGBSKHWXfwtSx-j1ncoSt3SABJtkGk", result);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void DoesNotAddVersion_IfFileNotFound()
         {
             // Arrange
@@ -109,7 +118,9 @@ namespace Microsoft.AspNet.Mvc.TagHelpers.Internal
             Assert.Equal("http://contoso.com/hello/world", result);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void ReturnsValueFromCache()
         {
             // Arrange
@@ -127,7 +138,9 @@ namespace Microsoft.AspNet.Mvc.TagHelpers.Internal
             Assert.Equal("FromCache", result);
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("/hello/world", "/hello/world", null)]
         [InlineData("/testApp/hello/world", "/hello/world", "/testApp")]
         public void SetsValueInCache(string filePath, string watchPath, string requestPathBase)
diff --git a/test/Microsoft.AspNet.Mvc.TagHelpers.Test/LinkTagHelperTest.cs b/test/Microsoft.AspNet.Mvc.TagHelpers.Test/LinkTagHelperTest.cs
index 1ca6ea4491..29406a39aa 100644
--- a/test/Microsoft.AspNet.Mvc.TagHelpers.Test/LinkTagHelperTest.cs
+++ b/test/Microsoft.AspNet.Mvc.TagHelpers.Test/LinkTagHelperTest.cs
@@ -15,6 +15,7 @@ using Microsoft.AspNet.Mvc.Rendering;
 using Microsoft.AspNet.Mvc.TagHelpers.Internal;
 using Microsoft.AspNet.Razor.Runtime.TagHelpers;
 using Microsoft.AspNet.Routing;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.Caching;
 using Microsoft.Framework.Caching.Memory;
 using Microsoft.Framework.Logging;
@@ -572,7 +573,9 @@ namespace Microsoft.AspNet.Mvc.TagHelpers
                 output.Content.GetContent());
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void RendersLinkTags_AddsFileVersion()
         {
             // Arrange
@@ -613,7 +616,9 @@ namespace Microsoft.AspNet.Mvc.TagHelpers
                 output.Content.GetContent());
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void RendersLinkTags_AddsFileVersion_WithRequestPathBase()
         {
             // Arrange
@@ -654,7 +659,9 @@ namespace Microsoft.AspNet.Mvc.TagHelpers
                 output.Content.GetContent());
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void RendersLinkTags_GlobbedHref_AddsFileVersion()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.TagHelpers.Test/ScriptTagHelperTest.cs b/test/Microsoft.AspNet.Mvc.TagHelpers.Test/ScriptTagHelperTest.cs
index 74eeee8b07..34238c53be 100644
--- a/test/Microsoft.AspNet.Mvc.TagHelpers.Test/ScriptTagHelperTest.cs
+++ b/test/Microsoft.AspNet.Mvc.TagHelpers.Test/ScriptTagHelperTest.cs
@@ -15,6 +15,7 @@ using Microsoft.AspNet.Mvc.Rendering;
 using Microsoft.AspNet.Mvc.TagHelpers.Internal;
 using Microsoft.AspNet.Razor.Runtime.TagHelpers;
 using Microsoft.AspNet.Routing;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Framework.Caching;
 using Microsoft.Framework.Caching.Memory;
 using Microsoft.Framework.Logging;
@@ -617,7 +618,9 @@ namespace Microsoft.AspNet.Mvc.TagHelpers
                 "<script src=\"HtmlEncode[[/common.js]]\"></script>", output.Content.GetContent());
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task RenderScriptTags_WithFileVersion()
         {
             // Arrange
@@ -654,7 +657,9 @@ namespace Microsoft.AspNet.Mvc.TagHelpers
                 "</script>", output.Content.GetContent());
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task RenderScriptTags_WithFileVersion_AndRequestPathBase()
         {
             // Arrange
@@ -691,7 +696,9 @@ namespace Microsoft.AspNet.Mvc.TagHelpers
                 "</script>", output.Content.GetContent());
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task RenderScriptTags_FallbackSrc_WithFileVersion()
         {
             // Arrange
@@ -729,12 +736,15 @@ namespace Microsoft.AspNet.Mvc.TagHelpers
             // Assert
             Assert.Equal(
                 "<script src=\"HtmlEncode[[/js/site.js?v=f4OxZX_x_FO5LcGBSKHWXfwtSx-j1ncoSt3SABJtkGk]]\">" +
-                "</script>\r\n<script>(isavailable()||document.write(\"<script src=\\\"JavaScriptStringEncode[[fallback.js" +
+                $"</script>{Environment.NewLine}" +
+                "<script>(isavailable()||document.write(\"<script src=\\\"JavaScriptStringEncode[[fallback.js" +
                 "?v=f4OxZX_x_FO5LcGBSKHWXfwtSx-j1ncoSt3SABJtkGk]]\\\"><\\/script>\"));</script>",
                 output.Content.GetContent());
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/21
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task RenderScriptTags_GlobbedSrc_WithFileVersion()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.TestCommon/PlatformNormalizer.cs b/test/Microsoft.AspNet.Mvc.TestCommon/PlatformNormalizer.cs
new file mode 100644
index 0000000000..ca4decaf73
--- /dev/null
+++ b/test/Microsoft.AspNet.Mvc.TestCommon/PlatformNormalizer.cs
@@ -0,0 +1,67 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Text.RegularExpressions;
+using Microsoft.AspNet.Testing;
+using Microsoft.AspNet.Razor;
+
+namespace Microsoft.AspNet.Mvc
+{
+    public static class PlatformNormalizer
+    {
+        // Mono issue - https://github.com/aspnet/External/issues/19
+        public static string NormalizeContent(string input)
+        {
+            if (TestPlatformHelper.IsMono)
+            {
+                var equivalents = new Dictionary<string, string> {
+                    {
+                        "The [0-9a-zA-Z ]+ field is required.", "RequiredAttribute_ValidationError"
+                    },
+                    {
+                        "'[0-9a-zA-Z ]+' and '[0-9a-zA-Z ]+' do not match.", "CompareAttribute_MustMatch"
+                    },
+                    {
+                        "The field [0-9a-zA-Z ]+ must be a string with a minimum length of [0-9]+ and a " +
+                            "maximum length of [0-9]+.",
+                        "StringLengthAttribute_ValidationErrorIncludingMinimum"
+                    },
+                };
+
+                var result = input;
+
+                foreach (var kvp in equivalents)
+                {
+                    result = Regex.Replace(result, kvp.Key, kvp.Value);
+                }
+
+                return result;
+            }
+
+            return input;
+        }
+
+        // Each new line character is returned as "_".
+        public static string GetNewLinesAsUnderscores(int numberOfNewLines)
+        {
+            return new string('_', numberOfNewLines * Environment.NewLine.Length);
+        }
+
+        public static string NormalizePath(string path)
+        {
+            return path.Replace('\\', Path.DirectorySeparatorChar);
+        }
+
+        // Assuming windows based source location is passed in,
+        // it gets normalized to other platforms.
+        public static SourceLocation NormalizedSourceLocation(int absoluteIndex, int lineIndex, int characterIndex)
+        {
+            var windowsNewLineLength = "\r\n".Length;
+            var differenceInLength = windowsNewLineLength - Environment.NewLine.Length;
+            return new SourceLocation(absoluteIndex - (differenceInLength * lineIndex), lineIndex, characterIndex);
+        }
+    }  
+}
\ No newline at end of file
diff --git a/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/DefaultContentNegotiatorTest.cs b/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/DefaultContentNegotiatorTest.cs
index 2dfef27bc3..960a49392d 100644
--- a/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/DefaultContentNegotiatorTest.cs
+++ b/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/DefaultContentNegotiatorTest.cs
@@ -6,6 +6,7 @@ using System.Linq;
 using System.Net.Http.Formatting.Mocks;
 using System.Net.Http.Headers;
 using System.Text;
+using Microsoft.AspNet.Testing;
 using Microsoft.TestCommon;
 using Newtonsoft.Json.Linq;
 using Xunit;
@@ -392,7 +393,9 @@ namespace System.Net.Http.Formatting
             _request.Headers.Add("x-requested-with", "XMLHttpRequest");
 
             // Act
-            var result = _negotiator.Negotiate(typeof(JToken), _request, new MediaTypeFormatterCollection());
+            // Mono issue - https://github.com/aspnet/External/issues/27
+            var type = TestPlatformHelper.IsMono ? typeof(string) : typeof(JToken);
+            var result = _negotiator.Negotiate(type, _request, new MediaTypeFormatterCollection());
 
             Assert.Equal("application/json", result.MediaType.MediaType);
             Assert.IsType<JsonMediaTypeFormatter>(result.Formatter);
diff --git a/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/HttpErrorTest.cs b/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/HttpErrorTest.cs
index 3ad2773beb..1689860ec3 100644
--- a/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/HttpErrorTest.cs
+++ b/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/HttpErrorTest.cs
@@ -5,6 +5,7 @@ using System.Collections.Generic;
 using System.IO;
 using System.Net.Http.Formatting;
 using Microsoft.AspNet.Mvc.ModelBinding;
+using Microsoft.AspNet.Testing.xunit;
 using Newtonsoft.Json.Linq;
 using Xunit;
 
@@ -132,7 +133,9 @@ namespace System.Web.Http.Dispatcher
             Assert.Contains("c", data);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/25
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void HttpError_Roundtrips_WithXmlFormatter()
         {
             HttpError error = new HttpError("error") { { "ErrorCode", 42 }, { "Data", new[] { "a", "b", "c" } } };
diff --git a/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/HttpRequestMessage/HttpRequestMessageExtensionsTest.cs b/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/HttpRequestMessage/HttpRequestMessageExtensionsTest.cs
index 511f9f06d0..009b981be5 100644
--- a/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/HttpRequestMessage/HttpRequestMessageExtensionsTest.cs
+++ b/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/HttpRequestMessage/HttpRequestMessageExtensionsTest.cs
@@ -7,6 +7,7 @@ using System.Net.Http.Headers;
 using Microsoft.AspNet.Http;
 using Microsoft.AspNet.Http.Internal;
 using Microsoft.AspNet.Mvc.WebApiCompatShim;
+using Microsoft.AspNet.Testing;
 using Microsoft.Framework.OptionsModel;
 #if !DNXCORE50
 using Moq;
@@ -25,7 +26,10 @@ namespace System.Net.Http
             var ex = Assert.Throws<FormatException>(
                 () => request.CreateResponse(HttpStatusCode.OK, CreateValue(), "foo/bar; param=value"));
 
-            Assert.Equal("The format of value 'foo/bar; param=value' is invalid.", ex.Message);
+            Assert.Equal(
+                TestPlatformHelper.IsMono ?
+                "Invalid format." :
+                "The format of value 'foo/bar; param=value' is invalid.", ex.Message);
         }
 
         [Fact]
diff --git a/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/HttpRequestMessage/HttpRequestMessageFeatureTest.cs b/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/HttpRequestMessage/HttpRequestMessageFeatureTest.cs
index d75c91a2c4..c0f167f9bc 100644
--- a/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/HttpRequestMessage/HttpRequestMessageFeatureTest.cs
+++ b/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/HttpRequestMessage/HttpRequestMessageFeatureTest.cs
@@ -7,6 +7,7 @@ using System.Text;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Http;
 using Microsoft.AspNet.Http.Internal;
+using Microsoft.AspNet.Testing.xunit;
 using Xunit;
 
 namespace Microsoft.AspNet.Mvc.WebApiCompatShim
@@ -51,7 +52,9 @@ namespace Microsoft.AspNet.Mvc.WebApiCompatShim
             Assert.Equal(new HttpMethod("OPTIONS"), request.Method);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/24
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void HttpRequestMessage_CopiesHeader()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/HttpResponseMessageOutputFormatterTests.cs b/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/HttpResponseMessageOutputFormatterTests.cs
index 7267c2d643..eafd06a84a 100644
--- a/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/HttpResponseMessageOutputFormatterTests.cs
+++ b/test/Microsoft.AspNet.Mvc.WebApiCompatShimTest/HttpResponseMessageOutputFormatterTests.cs
@@ -11,6 +11,7 @@ using System.Threading.Tasks;
 using Microsoft.AspNet.Http;
 using Microsoft.AspNet.Http.Internal;
 using Microsoft.AspNet.Mvc.WebApiCompatShim;
+using Microsoft.AspNet.Testing.xunit;
 using Moq;
 using Moq.Protected;
 using Xunit;
@@ -40,7 +41,9 @@ namespace Microsoft.AspNet.Mvc.WebApiCompatShimTest
             streamContent.Protected().Verify("Dispose", Times.Once(), true);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Issue - https://github.com/aspnet/External/issues/20
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ExplicitlySet_ChunkedEncodingFlag_IsIgnored()
         {
             // Arrange
@@ -62,7 +65,9 @@ namespace Microsoft.AspNet.Mvc.WebApiCompatShimTest
             Assert.NotNull(httpContext.Response.ContentLength);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Issue - https://github.com/aspnet/External/issues/20
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ExplicitlySet_ChunkedEncodingHeader_IsIgnored()
         {
             // Arrange
@@ -85,7 +90,9 @@ namespace Microsoft.AspNet.Mvc.WebApiCompatShimTest
             Assert.NotNull(httpContext.Response.ContentLength);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Issue - https://github.com/aspnet/External/issues/20
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ExplicitlySet_MultipleEncodings_ChunkedNotIgnored()
         {
             // Arrange
@@ -110,7 +117,9 @@ namespace Microsoft.AspNet.Mvc.WebApiCompatShimTest
             Assert.NotNull(httpContext.Response.ContentLength);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Issue - https://github.com/aspnet/External/issues/20
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ExplicitlySet_MultipleEncodingsUsingChunkedFlag_ChunkedNotIgnored()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.Xml.Test/EnumerableWrapperProviderTest.cs b/test/Microsoft.AspNet.Mvc.Xml.Test/EnumerableWrapperProviderTest.cs
index b2921e1f0a..69b6e9aa65 100644
--- a/test/Microsoft.AspNet.Mvc.Xml.Test/EnumerableWrapperProviderTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Xml.Test/EnumerableWrapperProviderTest.cs
@@ -82,8 +82,9 @@ namespace Microsoft.AspNet.Mvc.Xml
         public void ThrowsArugmentExceptionFor_ConcreteEnumerableOfT(Type declaredType)
         {
             // Arrange
-            var expectedMessage = "The type must be an interface and must be or derive from 'IEnumerable`1'." +
-                                  "\r\nParameter name: sourceEnumerableOfT";
+            var expectedMessage =
+                "The type must be an interface and must be or derive from 'IEnumerable`1'." +
+                $"{Environment.NewLine}Parameter name: sourceEnumerableOfT";
 
             // Act and Assert
             var ex = Assert.Throws<ArgumentException>(() => new EnumerableWrapperProvider(
diff --git a/test/Microsoft.AspNet.Mvc.Xml.Test/SerializableErrorWrapperProviderTest.cs b/test/Microsoft.AspNet.Mvc.Xml.Test/SerializableErrorWrapperProviderTest.cs
index 74d0e8f28b..badcb801c5 100644
--- a/test/Microsoft.AspNet.Mvc.Xml.Test/SerializableErrorWrapperProviderTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Xml.Test/SerializableErrorWrapperProviderTest.cs
@@ -45,7 +45,7 @@ namespace Microsoft.AspNet.Mvc.Xml
             var wrapperProvider = new SerializableErrorWrapperProvider();
             var person = new Person() { Id = 10, Name = "John" };
             var expectedMessage = string.Format("The object to be wrapped must be of type '{0}'" +
-                                    " but was of type 'Person'.\r\nParameter name: original",
+                                    $" but was of type 'Person'.{Environment.NewLine}Parameter name: original",
                                     typeof(SerializableErrorWrapper).Name);
 
             // Act and Assert
diff --git a/test/Microsoft.AspNet.Mvc.Xml.Test/SerializableErrorWrapperTests.cs b/test/Microsoft.AspNet.Mvc.Xml.Test/SerializableErrorWrapperTests.cs
index 4ccf79f406..9385b05679 100644
--- a/test/Microsoft.AspNet.Mvc.Xml.Test/SerializableErrorWrapperTests.cs
+++ b/test/Microsoft.AspNet.Mvc.Xml.Test/SerializableErrorWrapperTests.cs
@@ -8,6 +8,7 @@ using System.Text;
 using System.Xml;
 using Microsoft.AspNet.Mvc.ModelBinding;
 using Microsoft.AspNet.Mvc.Xml;
+using Microsoft.AspNet.Testing;
 using Xunit;
 
 namespace Microsoft.AspNet.Mvc
@@ -92,8 +93,15 @@ namespace Microsoft.AspNet.Mvc
             var res = new StreamReader(outputStream, Encoding.UTF8).ReadToEnd();
 
             // Assert
-            Assert.Equal("<?xml version=\"1.0\" encoding=\"utf-8\"?>" +
-                "<Error><key1>Test Error 1 Test Error 2</key1><key2>Test Error 3</key2></Error>", res);
+            var expectedContent =
+                TestPlatformHelper.IsMono ?
+                    "<?xml version=\"1.0\" encoding=\"utf-8\"?><Error xmlns:i=\"" +
+                    "http://www.w3.org/2001/XMLSchema-instance\"><key1>Test Error 1 Test Error 2</key1>" +
+                    "<key2>Test Error 3</key2></Error>" :
+                    "<?xml version=\"1.0\" encoding=\"utf-8\"?>" +
+                    "<Error><key1>Test Error 1 Test Error 2</key1><key2>Test Error 3</key2></Error>";
+
+            Assert.Equal(expectedContent, res);
         }
     }
 }
\ No newline at end of file
diff --git a/test/Microsoft.AspNet.Mvc.Xml.Test/XmlAssertTest.cs b/test/Microsoft.AspNet.Mvc.Xml.Test/XmlAssertTest.cs
index 7cf74bf068..be1482fda0 100644
--- a/test/Microsoft.AspNet.Mvc.Xml.Test/XmlAssertTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Xml.Test/XmlAssertTest.cs
@@ -2,6 +2,8 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
+using Microsoft.AspNet.Testing;
+using Microsoft.AspNet.Testing.xunit;
 using Xunit;
 using Xunit.Sdk;
 
@@ -41,6 +43,14 @@ namespace Microsoft.AspNet.Mvc.Xml
         [InlineData("<A><![CDATA[<greeting></greeting>]]></A>", "<A><![CDATA[<greeting></greeting>]]></A>")]
         public void ReturnsSuccessfully_WithEmptyElements(string input1, string input2)
         {
+            // DeepEquals returns false even though the generated XML documents are equal.
+            // This is fixed in Mono 4.3.0
+            if (TestPlatformHelper.IsMono
+                && input1 == "<A><![CDATA[<greeting></greeting>]]></A>")
+            {
+                return;
+            }
+
             XmlAssert.Equal(input1, input2);
         }
 
@@ -54,7 +64,10 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.Throws<EqualException>(() => XmlAssert.Equal(input1, input2));
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // DeepEquals returns false even though the generated XML documents are equal.
+        // This is fixed in Mono 4.3.0
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void ReturnsSuccessfully_WithMatchingXmlDeclaration_IgnoringCase()
         {
             // Arrange
diff --git a/test/Microsoft.AspNet.Mvc.Xml.Test/XmlDataContractSerializerInputFormatterTest.cs b/test/Microsoft.AspNet.Mvc.Xml.Test/XmlDataContractSerializerInputFormatterTest.cs
index f07ddf6aa6..e85ecb8a6b 100644
--- a/test/Microsoft.AspNet.Mvc.Xml.Test/XmlDataContractSerializerInputFormatterTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Xml.Test/XmlDataContractSerializerInputFormatterTest.cs
@@ -13,6 +13,7 @@ using System.Xml;
 using Microsoft.AspNet.Http;
 using Microsoft.AspNet.Mvc.ModelBinding;
 using Microsoft.AspNet.Testing;
+using Microsoft.AspNet.Testing.xunit;
 using Moq;
 using Xunit;
 
@@ -53,7 +54,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             public TestLevelOne TestOne { get; set; }
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [InlineData("application/xml", true)]
         [InlineData("application/*", true)]
         [InlineData("*/*", true)]
@@ -81,7 +84,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.Equal(expectedCanRead, result);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void XmlDataContractSerializer_CachesSerializerForType()
         {
             // Arrange
@@ -125,7 +130,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.True(formatter.SupportedEncodings.Any(i => i.WebName == "utf-16"));
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ReadAsync_ReadsSimpleTypes()
         {
             // Arrange
@@ -152,7 +159,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.Equal(expectedString, levelOneModel.sampleString);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ReadAsync_ReadsComplexTypes()
         {
             // Arrange
@@ -182,7 +191,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.Equal(expectedString, levelTwoModel.TestOne.sampleString);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ReadAsync_ReadsWhenMaxDepthIsModified()
         {
             // Arrange
@@ -206,7 +217,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.Equal(expectedInt, dummyModel.SampleInt);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ReadAsync_ThrowsOnExceededMaxDepth()
         {
             if (TestPlatformHelper.IsMono)
@@ -229,7 +242,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             await Assert.ThrowsAsync(typeof(SerializationException), async () => await formatter.ReadAsync(context));
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ReadAsync_ThrowsWhenReaderQuotasAreChanged()
         {
             if (TestPlatformHelper.IsMono)
@@ -262,7 +277,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.Throws(typeof(ArgumentException), () => formatter.MaxDepth = 0);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ReadAsync_VerifyStreamIsOpenAfterRead()
         {
             // Arrange
@@ -280,7 +297,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.True(context.HttpContext.Request.Body.CanRead);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ReadAsync_FallsbackToUTF8_WhenCharSet_NotInContentType()
         {
             // Arrange
@@ -307,7 +326,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.Equal(expectedMessage, ex.Message);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ReadAsync_UsesContentTypeCharSet_ToReadStream()
         {
             // Arrange
@@ -331,7 +352,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.Equal(expectedMessage, ex.Message);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ReadAsync_IgnoresBOMCharacters()
         {
             // Arrange
@@ -362,7 +385,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.Equal(expectedBytes, Encoding.UTF8.GetBytes(levelTwoModel.SampleString));
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ReadAsync_AcceptsUTF16Characters()
         {
             // Arrange
@@ -393,7 +418,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.Equal(expectedString, levelOneModel.sampleString);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ReadAsync_ThrowsWhenNotConfiguredWithRootName()
         {
             // Arrange
@@ -412,7 +439,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             await Assert.ThrowsAsync(typeof(SerializationException), async () => await formatter.ReadAsync(context));
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ReadAsync_ReadsWhenConfiguredWithRootName()
         {
             // Arrange
@@ -448,7 +477,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.Equal(expectedInt, dummyModel.SampleInt);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ReadAsync_ThrowsWhenNotConfiguredWithKnownTypes()
         {
             // Arrange
@@ -468,7 +499,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             await Assert.ThrowsAsync(typeof(SerializationException), async () => await formatter.ReadAsync(context));
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task ReadAsync_ReadsWhenConfiguredWithKnownTypes()
         {
             // Arrange
@@ -504,6 +537,7 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.Equal(expectedInt, dummyModel.SampleInt);
             Assert.Equal(expectedString, dummyModel.SampleString);
         }
+
         private InputFormatterContext GetInputFormatterContext(byte[] contentBytes, Type modelType)
         {
             var httpContext = GetHttpContext(contentBytes);
diff --git a/test/Microsoft.AspNet.Mvc.Xml.Test/XmlDataContractSerializerOutputFormatterTest.cs b/test/Microsoft.AspNet.Mvc.Xml.Test/XmlDataContractSerializerOutputFormatterTest.cs
index 8aa3d8506f..51b901a6af 100644
--- a/test/Microsoft.AspNet.Mvc.Xml.Test/XmlDataContractSerializerOutputFormatterTest.cs
+++ b/test/Microsoft.AspNet.Mvc.Xml.Test/XmlDataContractSerializerOutputFormatterTest.cs
@@ -10,6 +10,8 @@ using System.Threading.Tasks;
 using System.Xml;
 using Microsoft.AspNet.Http;
 using Microsoft.AspNet.Http.Internal;
+using Microsoft.AspNet.Testing;
+using Microsoft.AspNet.Testing.xunit;
 using Microsoft.Net.Http.Headers;
 using Moq;
 using Xunit;
@@ -94,6 +96,13 @@ namespace Microsoft.AspNet.Mvc.Xml
         [MemberData(nameof(BasicTypeValues))]
         public async Task WriteAsync_CanWriteBasicTypes(object input, string expectedOutput)
         {
+            // ConditionalThoery seems to throw when used with Member data. Hence using if case here.
+            if (TestPlatformHelper.IsMono)
+            {
+                // Mono issue - https://github.com/aspnet/External/issues/18
+                return;
+            }
+
             // Arrange
             var formatter = new XmlDataContractSerializerOutputFormatter();
             var outputFormatterContext = GetOutputFormatterContext(input, typeof(object));
@@ -109,7 +118,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             XmlAssert.Equal(expectedOutput, content);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void XmlDataContractSerializer_CachesSerializerForType()
         {
             // Arrange
@@ -125,7 +136,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.Equal(1, formatter.createSerializerCalledCount);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public void DefaultConstructor_ExpectedWriterSettings_Created()
         {
             // Arrange and Act
@@ -139,7 +152,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.False(writerSettings.CheckCharacters);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task SuppliedWriterSettings_TakeAffect()
         {
             // Arrange
@@ -165,7 +180,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             XmlAssert.Equal(expectedOutput, content);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task WriteAsync_WritesSimpleTypes()
         {
             // Arrange
@@ -188,7 +205,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             XmlAssert.Equal(expectedOutput, content);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task WriteAsync_WritesComplexTypes()
         {
             // Arrange
@@ -221,7 +240,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             XmlAssert.Equal(expectedOutput, content);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task WriteAsync_WritesOnModifiedWriterSettings()
         {
             // Arrange
@@ -250,7 +271,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             XmlAssert.Equal(expectedOutput, content);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task WriteAsync_WritesUTF16Output()
         {
             // Arrange
@@ -278,7 +301,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             XmlAssert.Equal(expectedOutput, content);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task WriteAsync_WritesIndentedOutput()
         {
             // Arrange
@@ -302,7 +327,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             XmlAssert.Equal(expectedOutput, content);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task WriteAsync_VerifyBodyIsNotClosedAfterOutputIsWritten()
         {
             // Arrange
@@ -318,7 +345,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             Assert.True(body.CanRead);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task WriteAsync_DoesntFlushOutputStream()
         {
             // Arrange
@@ -353,6 +382,13 @@ namespace Microsoft.AspNet.Mvc.Xml
         [MemberData(nameof(TypesForCanWriteResult))]
         public void CanWriteResult_ReturnsExpectedOutput(object input, Type declaredType, bool expectedOutput)
         {
+            // ConditionalThoery seems to throw when used with Member data. Hence using if case here.
+            if (TestPlatformHelper.IsMono)
+            {
+                // Mono issue - https://github.com/aspnet/External/issues/18
+                return;
+            }
+
             // Arrange
             var formatter = new XmlDataContractSerializerOutputFormatter();
             var outputFormatterContext = GetOutputFormatterContext(input, declaredType);
@@ -377,7 +413,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             }
         }
 
-        [Theory]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         [MemberData(nameof(TypesForGetSupportedContentTypes))]
         public void GetSupportedContentTypes_ReturnsSupportedTypes(Type declaredType,
             Type runtimeType, object expectedOutput)
@@ -400,7 +438,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             }
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task WriteAsync_ThrowsWhenNotConfiguredWithKnownTypes()
         {
             // Arrange
@@ -413,7 +453,9 @@ namespace Microsoft.AspNet.Mvc.Xml
                 async () => await formatter.WriteAsync(outputFormatterContext));
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task WriteAsync_ThrowsWhenNotConfiguredWithPreserveReferences()
         {
             // Arrange
@@ -429,7 +471,9 @@ namespace Microsoft.AspNet.Mvc.Xml
                 async () => await formatter.WriteAsync(outputFormatterContext));
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task WriteAsync_WritesWhenConfiguredWithRootName()
         {
             // Arrange
@@ -470,7 +514,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             XmlAssert.Equal(expectedOutput, content);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task WriteAsync_WritesWhenConfiguredWithKnownTypes()
         {
             // Arrange
@@ -514,7 +560,9 @@ namespace Microsoft.AspNet.Mvc.Xml
             XmlAssert.Equal(expectedOutput, content);
         }
 
-        [Fact]
+        [ConditionalTheory]
+        // Mono issue - https://github.com/aspnet/External/issues/18
+        [FrameworkSkipCondition(RuntimeFrameworks.Mono)]
         public async Task WriteAsync_WritesWhenConfiguredWithPreserveReferences()
         {
             // Arrange
diff --git a/test/WebSites/RazorWebSite/Controllers/DirectivesController.cs b/test/WebSites/RazorWebSite/Controllers/DirectivesController.cs
index dd8b4a6291..16948a36e2 100644
--- a/test/WebSites/RazorWebSite/Controllers/DirectivesController.cs
+++ b/test/WebSites/RazorWebSite/Controllers/DirectivesController.cs
@@ -14,7 +14,7 @@ namespace RazorWebSite
 
         public ViewResult ViewInheritsBasePageFromViewImports()
         {
-            return View("/views/directives/scoped/ViewInheritsBasePageFromViewImports.cshtml",
+            return View("/Views/Directives/Scoped/ViewInheritsBasePageFromViewImports.cshtml",
                         new Person { Name = "Person2" });
         }
     }