#103 Fix ambigious Keys property on IHeaderDictionary.

src/Microsoft.AspNet.Http/IHeaderDictionary.cs

@@ -24,6 +24,12 @@ namespace Microsoft.AspNet.Http
         /// </summary>
         new int Count { get; }
 
+        // This property is duplicated to resolve an ambiguity between IReadableStringCollection.Keys and IDictionary<string, string[]>.Keys
+        /// <summary>
+        /// Gets a collection containing the keys.
+        /// </summary>
+        new ICollection<string> Keys { get; }
+
         /// <summary>
         /// Get the associated values from the collection separated into individual values.
         /// Quoted values will not be split, and the quotes will be removed.

test/Microsoft.AspNet.PipelineCore.Tests/HeaderDictionaryTests.cs

@@ -0,0 +1,31 @@
+// Copyright (c) Microsoft Open Technologies, Inc. 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 Microsoft.AspNet.PipelineCore.Collections;
+using Xunit;
+
+namespace Microsoft.AspNet.PipelineCore.Tests
+{
+    public class HeaderDictionaryTests
+    {
+        [Fact]
+        public void PropertiesAreAccessible()
+        {
+            var headers = new HeaderDictionary(
+                new Dictionary<string, string[]>(StringComparer.OrdinalIgnoreCase)
+                {
+                    { "Header1", new[] { "Value1" } }
+                });
+
+            Assert.Equal(1, headers.Count);
+            Assert.Equal(new[] { "Headers1" }, headers.Keys);
+            Assert.True(headers.ContainsKey("headers1"));
+            Assert.False(headers.ContainsKey("headers2"));
+            Assert.Equal("Value1", headers["header1"]);
+            Assert.Equal("Value1", headers.Get("header1"));
+            Assert.Equal(new[] { "Value1" }, headers.GetValues("header1"));
+        }
+    }
+}

test/Microsoft.AspNet.PipelineCore.Tests/Microsoft.AspNet.PipelineCore.Tests.kproj

@@ -23,10 +23,11 @@
   <ItemGroup>
     <Compile Include="BuilderTests.cs" />
     <Compile Include="FormFeatureTests.cs" />
+    <Compile Include="HeaderDictionaryTests.cs" />
     <Compile Include="QueryFeatureTests.cs" />
     <Compile Include="DefaultHttpContextTests.cs" />
     <Compile Include="DefaultHttpRequestTests.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <Import Project="$(VSToolsPath)\AspNet\Microsoft.Web.AspNet.targets" Condition="'$(VSToolsPath)' != ''" />
-</Project>
+</Project>