Update tests to follow developer guidelines.

- Moved tests to match their corresponding test src files.
- Updated test namespaces to match their corresponding test src files.

#782

test/Microsoft.AspNetCore.Razor.Test/CSharpRazorCodeLanguageTest.cs

@@ -6,7 +6,7 @@ using Microsoft.AspNetCore.Razor.CodeGenerators;
 using Microsoft.AspNetCore.Razor.Parser;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test
+namespace Microsoft.AspNetCore.Razor
 {
     public class CSharpRazorCodeLanguageTest
     {

test/Microsoft.AspNetCore.Razor.Test/Chunks/ChunkTreeBuilderTest.cs

@@ -7,7 +7,7 @@ using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Chunks.Generators
+namespace Microsoft.AspNetCore.Razor.Chunks
 {
     public class ChunkTreeBuilderTest
     {

test/Microsoft.AspNetCore.Razor.Test/Chunks/ChunkVisitorTests.cs

@@ -7,7 +7,7 @@ using Moq;
 using Moq.Protected;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Chunks.Generators
+namespace Microsoft.AspNetCore.Razor.Chunks
 {
     public class ChunkVisitorTests
     {

test/Microsoft.AspNetCore.Razor.Test/CodeGenerators/CSharpCodeGeneratorTest.cs

@@ -5,8 +5,7 @@
 using System;
 #endif
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
-using Microsoft.AspNetCore.Razor.Test;
+using Microsoft.AspNetCore.Razor.Test.CodeGenerators;
-using Microsoft.AspNetCore.Razor.Test.Generator;
 using Microsoft.AspNetCore.Razor.Test.Utils;
 using Moq;
 using Xunit;

test/Microsoft.AspNetCore.Razor.Test/CodeGenerators/CSharpPaddingBuilderTests.cs

@@ -5,13 +5,12 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
-using Microsoft.AspNetCore.Razor.CodeGenerators;
 using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.Internal;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Generator
+namespace Microsoft.AspNetCore.Razor.CodeGenerators
 {
     public class CSharpPaddingBuilderTests
     {

test/Microsoft.AspNetCore.Razor.Test/CodeGenerators/CSharpRazorCodeGeneratorTest.cs

@@ -4,13 +4,13 @@
 using System;
 using System.Collections.Generic;
 using Microsoft.AspNetCore.Razor.Chunks.Generators;
-using Microsoft.AspNetCore.Razor.CodeGenerators;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
+using Microsoft.AspNetCore.Razor.Test.CodeGenerators;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Generator
+namespace Microsoft.AspNetCore.Razor.CodeGenerators
 {
-    public class RazorCodeGeneratorTest : RazorCodeGeneratorTest<CSharpRazorCodeLanguage>
+    public class CSharpRazorCodeGeneratorTest : RazorCodeGeneratorTest<CSharpRazorCodeLanguage>
     {
         protected override string FileExtension
         {

test/Microsoft.AspNetCore.Razor.Test/CodeGenerators/CSharpTagHelperRenderingTest.cs

@@ -13,7 +13,7 @@ using Microsoft.AspNetCore.Razor.Compilation.TagHelpers;
 using Microsoft.AspNetCore.Testing.xunit;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Generator
+namespace Microsoft.AspNetCore.Razor.Test.CodeGenerators
 {
     public class CSharpTagHelperRenderingTest : TagHelperTestBase
     {
@@ -1832,31 +1832,31 @@ namespace Microsoft.AspNetCore.Razor.Test.Generator
                                 documentAbsoluteIndex: 169,
                                 documentLineIndex: 8,
                                 documentCharacterOffsetIndex: 14,
-                                generatedAbsoluteIndex: 1929,
+                                generatedAbsoluteIndex: 1934,
                                 generatedLineIndex: 50,
-                                generatedCharacterOffsetIndex: 96,
+                                generatedCharacterOffsetIndex: 101,
                                 contentLength: 7),
                             BuildLineMapping(
                                 documentAbsoluteIndex: 196,
                                 documentLineIndex: 9,
                                 documentCharacterOffsetIndex: 14,
-                                generatedAbsoluteIndex: 2312,
+                                generatedAbsoluteIndex: 2322,
                                 generatedLineIndex: 57,
-                                generatedCharacterOffsetIndex: 96,
+                                generatedCharacterOffsetIndex: 101,
                                 contentLength: 13),
                             BuildLineMapping(
                                 documentAbsoluteIndex: 222,
                                 documentLineIndex: 9,
                                 documentCharacterOffsetIndex: 40,
-                                generatedAbsoluteIndex: 2495,
+                                generatedAbsoluteIndex: 2510,
                                 generatedLineIndex: 62,
-                                generatedCharacterOffsetIndex: 102,
+                                generatedCharacterOffsetIndex: 107,
                                 contentLength: 7),
                             BuildLineMapping(
                                 documentAbsoluteIndex: 249,
                                 documentLineIndex: 10,
                                 documentCharacterOffsetIndex: 15,
-                                generatedAbsoluteIndex: 2821,
+                                generatedAbsoluteIndex: 2836,
                                 generatedLineIndex: 69,
                                 generatedCharacterOffsetIndex: 39,
                                 contentLength: 9),
@@ -1864,7 +1864,7 @@ namespace Microsoft.AspNetCore.Razor.Test.Generator
                                 documentAbsoluteIndex: 272,
                                 documentLineIndex: 10,
                                 documentCharacterOffsetIndex: 38,
-                                generatedAbsoluteIndex: 2943,
+                                generatedAbsoluteIndex: 2958,
                                 generatedLineIndex: 74,
                                 generatedCharacterOffsetIndex: 45,
                                 contentLength: 9),

test/Microsoft.AspNetCore.Razor.Test/CodeGenerators/CSharpTagHelperRenderingUnitTest.cs

@@ -4,13 +4,13 @@ using Microsoft.AspNetCore.Razor.Chunks;
 using Microsoft.AspNetCore.Razor.Chunks.Generators;
 using Microsoft.AspNetCore.Razor.CodeGenerators;
 using Microsoft.AspNetCore.Razor.CodeGenerators.Visitors;
+using Microsoft.AspNetCore.Razor.Compilation.TagHelpers;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Parser.TagHelpers;
 using Microsoft.AspNetCore.Razor.TagHelpers;
-using Microsoft.AspNetCore.Razor.Compilation.TagHelpers;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Generator
+namespace Microsoft.AspNetCore.Razor.Test.CodeGenerators
 {
     public class CSharpTagHelperRenderingUnitTest
     {

test/Microsoft.AspNetCore.Razor.Test/CodeGenerators/CodeGenTestCodeGenerator.cs

@@ -3,7 +3,7 @@
 
 using Microsoft.AspNetCore.Razor.CodeGenerators;
 
-namespace Microsoft.AspNetCore.Razor.Test.Generator
+namespace Microsoft.AspNetCore.Razor.Test.CodeGenerators
 {
     public class CodeGenTestCodeGenerator : CSharpCodeGenerator
     {

test/Microsoft.AspNetCore.Razor.Test/CodeGenerators/CodeGenTestHost.cs

@@ -3,7 +3,7 @@
 
 using Microsoft.AspNetCore.Razor.CodeGenerators;
 
-namespace Microsoft.AspNetCore.Razor.Test.Generator
+namespace Microsoft.AspNetCore.Razor.Test.CodeGenerators
 {
     public class CodeGenTestHost : RazorEngineHost
     {

test/Microsoft.AspNetCore.Razor.Test/CodeGenerators/LineMappingTest.cs

@@ -4,7 +4,7 @@
 using Microsoft.AspNetCore.Razor.CodeGenerators;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Generator
+namespace Microsoft.AspNetCore.Razor.Test.CodeGenerators
 {
     public class LineMappingTest
     {

test/Microsoft.AspNetCore.Razor.Test/CodeGenerators/RazorChunkGeneratorTest.cs

@@ -11,7 +11,7 @@ using Microsoft.AspNetCore.Razor.Test.Utils;
 using Microsoft.AspNetCore.Testing;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Generator
+namespace Microsoft.AspNetCore.Razor.Test.CodeGenerators
 {
     public abstract class RazorCodeGeneratorTest<TLanguage>
         where TLanguage : RazorCodeLanguage, new()

test/Microsoft.AspNetCore.Razor.Test/CodeGenerators/TabTest.cs

@@ -2,7 +2,8 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
-namespace Microsoft.AspNetCore.Razor.Test.Generator
+
+namespace Microsoft.AspNetCore.Razor.Test.CodeGenerators
 {
     [Flags]
     public enum TabTest

test/Microsoft.AspNetCore.Razor.Test/CodeGenerators/TagHelperAttributeValueCodeRendererTest.cs

@@ -5,13 +5,13 @@ using System;
 #if NETCOREAPP1_0
 using System.Reflection;
 #endif
-using Microsoft.AspNetCore.Razor.CodeGenerators;
 using Microsoft.AspNetCore.Razor.CodeGenerators.Visitors;
 using Microsoft.AspNetCore.Razor.TagHelpers;
 using Microsoft.AspNetCore.Razor.Compilation.TagHelpers;
 using Xunit;
+using Microsoft.AspNetCore.Razor.Test.CodeGenerators;
 
-namespace Microsoft.AspNetCore.Razor.Test.Generator
+namespace Microsoft.AspNetCore.Razor.CodeGenerators
 {
     public class TagHelperAttributeValueCodeRendererTest : TagHelperTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/CodeGenerators/TagHelperTestBase.cs

@@ -6,12 +6,12 @@ using System.Collections.Generic;
 using System.Linq;
 using Microsoft.AspNetCore.Razor.CodeGenerators;
 using Microsoft.AspNetCore.Razor.CodeGenerators.Visitors;
-using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Compilation.TagHelpers;
+using Microsoft.AspNetCore.Razor.Parser;
 
-namespace Microsoft.AspNetCore.Razor.Test.Generator
+namespace Microsoft.AspNetCore.Razor.Test.CodeGenerators
 {
-    public class TagHelperTestBase : RazorCodeGeneratorTest
+    public class TagHelperTestBase : CSharpRazorCodeGeneratorTest
     {
         protected void RunTagHelperTest(string testName,
                                         string baseLineName = null,

test/Microsoft.AspNetCore.Razor.Test/CodeGenerators/TestSpan.cs

@@ -4,7 +4,7 @@
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.Extensions.Internal;
 
-namespace Microsoft.AspNetCore.Razor.Test.Generator
+namespace Microsoft.AspNetCore.Razor.Test.CodeGenerators
 {
     public class TestSpan
     {

test/Microsoft.AspNetCore.Razor.Test/Compilation/TagHelpers/TagHelperDescriptorTest.cs

@@ -2,7 +2,6 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
-using System.Linq;
 using Microsoft.AspNetCore.Razor.TagHelpers;
 using Microsoft.AspNetCore.Razor.Test.Internal;
 using Newtonsoft.Json;
@@ -66,7 +65,7 @@ namespace Microsoft.AspNetCore.Razor.Compilation.TagHelpers
                 $"\"{ nameof(TagHelperDescriptor.AllowedChildren) }\":[\"allowed child one\"]," +
                 $"\"{ nameof(TagHelperDescriptor.RequiredParent) }\":\"parent name\"," +
                 $"\"{ nameof(TagHelperDescriptor.TagStructure) }\":0," +
-                $"\"{ nameof(TagHelperDescriptor.DesignTimeDescriptor) }\":{{"+
+                $"\"{ nameof(TagHelperDescriptor.DesignTimeDescriptor) }\":{{" +
                 $"\"{ nameof(TagHelperDesignTimeDescriptor.Summary) }\":\"usage summary\"," +
                 $"\"{ nameof(TagHelperDesignTimeDescriptor.Remarks) }\":\"usage remarks\"," +
                 $"\"{ nameof(TagHelperDesignTimeDescriptor.OutputElementHint) }\":\"some-tag\"}}}}";

test/Microsoft.AspNetCore.Razor.Test/Editor/AutoCompleteEditHandlerTest.cs

@@ -2,11 +2,11 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System.Linq;
-using Microsoft.AspNetCore.Razor.Editor;
+using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Parser.SyntaxTree
+namespace Microsoft.AspNetCore.Razor.Editor
 {
     public class AutoCompleteEditHandlerTest
     {

test/Microsoft.AspNetCore.Razor.Test/Editor/ImplicitExpressionEditHandlerTest.cs

@@ -4,11 +4,11 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using Microsoft.AspNetCore.Razor.Editor;
+using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Parser.SyntaxTree
+namespace Microsoft.AspNetCore.Razor.Editor
 {
     public class ImplicitExpressionEditHandlerTest
     {

test/Microsoft.AspNetCore.Razor.Test/Editor/RazorEditorParserTest.cs

@@ -1,255 +0,0 @@
-// 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.Threading;
-using System.Web.WebPages.TestUtils;
-using Microsoft.AspNetCore.Razor.Editor;
-using Microsoft.AspNetCore.Razor.Parser;
-using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
-using Microsoft.AspNetCore.Razor.TagHelpers;
-using Microsoft.AspNetCore.Razor.Test.Framework;
-using Microsoft.AspNetCore.Razor.Test.Generator;
-using Microsoft.AspNetCore.Razor.Test.Utils;
-using Microsoft.AspNetCore.Razor.Text;
-using Microsoft.AspNetCore.Testing;
-using Xunit;
-
-namespace Microsoft.AspNetCore.Razor.Test.Editor
-{
-    public class RazorEditorParserTest
-    {
-        private static readonly TestFile SimpleCSHTMLDocument = TestFile.Create("TestFiles/DesignTime/Simple.cshtml");
-        private static readonly TestFile SimpleCSHTMLDocumentGenerated = TestFile.Create("TestFiles/DesignTime/Simple.txt");
-        private const string TestLinePragmaFileName = "C:\\This\\Path\\Is\\Just\\For\\Line\\Pragmas.cshtml";
-
-        [Fact]
-        public void ConstructorRequiresNonNullPhysicalPath()
-        {
-            Assert.Throws<ArgumentException>("sourceFileName", () => new RazorEditorParser(CreateHost(), null));
-        }
-
-        [Fact]
-        public void ConstructorRequiresNonEmptyPhysicalPath()
-        {
-            Assert.Throws<ArgumentException>("sourceFileName", () => new RazorEditorParser(CreateHost(), string.Empty));
-        }
-
-        [Theory]
-        [InlineData(" ")]
-        [InlineData("\r\n")]
-        [InlineData("abcdefg")]
-        [InlineData("\f\r\n abcd   \t")]
-        public void TreesAreDifferentReturnsFalseForAddedContent(string content)
-        {
-            // Arrange
-            var factory = SpanFactory.CreateCsHtml();
-            var blockFactory = new BlockFactory(factory);
-            var original = new MarkupBlock(
-                blockFactory.MarkupTagBlock("<p>"),
-                blockFactory.TagHelperBlock(
-                    tagName: "div",
-                    tagMode: TagMode.StartTagAndEndTag,
-                    start: new SourceLocation(3, 0, 3),
-                    startTag: blockFactory.MarkupTagBlock("<div>"),
-                    children: new SyntaxTreeNode[]
-                    {
-                        factory.Markup($"{Environment.NewLine}{Environment.NewLine}")
-                    },
-                    endTag: blockFactory.MarkupTagBlock("</div>")),
-                blockFactory.MarkupTagBlock("</p>"));
-
-            factory.Reset();
-
-            var modified = new MarkupBlock(
-                blockFactory.MarkupTagBlock("<p>"),
-                blockFactory.TagHelperBlock(
-                    tagName: "div",
-                    tagMode: TagMode.StartTagAndEndTag,
-                    start: new SourceLocation(3, 0, 3),
-                    startTag: blockFactory.MarkupTagBlock("<div>"),
-                    children: new SyntaxTreeNode[]
-                    {
-                        factory.Markup($"{Environment.NewLine}{content}{Environment.NewLine}")
-                    },
-                    endTag: blockFactory.MarkupTagBlock("</div>")),
-                blockFactory.MarkupTagBlock("</p>"));
-            original.LinkNodes();
-            modified.LinkNodes();
-
-            var oldBuffer = new StringTextBuffer($"<p><div>{Environment.NewLine}{Environment.NewLine}</div></p>");
-            var newBuffer = new StringTextBuffer(
-                $"<p><div>{Environment.NewLine}{content}{Environment.NewLine}</div></p>");
-
-            // Act
-            var treesAreDifferent = BackgroundParser.TreesAreDifferent(
-                original,
-                modified,
-                new[]
-                {
-                    new TextChange(
-                        position: 8 + Environment.NewLine.Length,
-                        oldLength: 0,
-                        oldBuffer: oldBuffer,
-                        newLength: content.Length,
-                        newBuffer: newBuffer)
-                });
-
-            // Assert
-            Assert.False(treesAreDifferent);
-        }
-
-        [Fact]
-        public void TreesAreDifferentReturnsTrueIfTreeStructureIsDifferent()
-        {
-            var factory = SpanFactory.CreateCsHtml();
-            var original = new MarkupBlock(
-                factory.Markup("<p>"),
-                new ExpressionBlock(
-                    factory.CodeTransition()),
-                factory.Markup("</p>"));
-            var modified = new MarkupBlock(
-                factory.Markup("<p>"),
-                new ExpressionBlock(
-                    factory.CodeTransition("@"),
-                    factory.Code("f")
-                           .AsImplicitExpression(CSharpCodeParser.DefaultKeywords, acceptTrailingDot: false)),
-                factory.Markup("</p>"));
-            var oldBuffer = new StringTextBuffer("<p>@</p>");
-            var newBuffer = new StringTextBuffer("<p>@f</p>");
-            Assert.True(BackgroundParser.TreesAreDifferent(
-                original,
-                modified,
-                new[]
-                {
-                    new TextChange(position: 4, oldLength: 0, oldBuffer: oldBuffer, newLength: 1, newBuffer: newBuffer)
-                }));
-        }
-
-        [Fact]
-        public void TreesAreDifferentReturnsFalseIfTreeStructureIsSame()
-        {
-            var factory = SpanFactory.CreateCsHtml();
-            var original = new MarkupBlock(
-                factory.Markup("<p>"),
-                new ExpressionBlock(
-                    factory.CodeTransition(),
-                    factory.Code("f")
-                           .AsImplicitExpression(CSharpCodeParser.DefaultKeywords, acceptTrailingDot: false)),
-                factory.Markup("</p>"));
-            factory.Reset();
-            var modified = new MarkupBlock(
-                factory.Markup("<p>"),
-                new ExpressionBlock(
-                    factory.CodeTransition(),
-                    factory.Code("foo")
-                           .AsImplicitExpression(CSharpCodeParser.DefaultKeywords, acceptTrailingDot: false)),
-                factory.Markup("</p>"));
-            original.LinkNodes();
-            modified.LinkNodes();
-            var oldBuffer = new StringTextBuffer("<p>@f</p>");
-            var newBuffer = new StringTextBuffer("<p>@foo</p>");
-            Assert.False(BackgroundParser.TreesAreDifferent(
-                original,
-                modified,
-                new[]
-                {
-                    new TextChange(position: 5, oldLength: 0, oldBuffer: oldBuffer, newLength: 2, newBuffer: newBuffer)
-                }));
-        }
-
-        [Fact]
-        public void CheckForStructureChangesRequiresNonNullBufferInChange()
-        {
-            var change = new TextChange();
-            var parameterName = "change";
-            var exception = Assert.Throws<ArgumentException>(
-                parameterName,
-                () =>
-                {
-                    using (var parser = new RazorEditorParser(CreateHost(), "C:\\Foo.cshtml"))
-                    {
-                        parser.CheckForStructureChanges(change);
-                    }
-                });
-            ExceptionHelpers.ValidateArgumentException(parameterName, RazorResources.FormatStructure_Member_CannotBeNull(nameof(change.NewBuffer), nameof(TextChange)), exception);
-        }
-
-        private static RazorEngineHost CreateHost()
-        {
-            return new CodeGenTestHost(new CSharpRazorCodeLanguage()) { DesignTimeMode = true };
-        }
-
-        [Fact]
-        [ReplaceCulture]
-        public void CheckForStructureChangesStartsReparseAndFiresDocumentParseCompletedEventIfNoAdditionalChangesQueued()
-        {
-            // Arrange
-            using (var parser = CreateClientParser())
-            {
-                var input = new StringTextBuffer(SimpleCSHTMLDocument.ReadAllText());
-
-                DocumentParseCompleteEventArgs capturedArgs = null;
-                var parseComplete = new ManualResetEventSlim(false);
-
-                parser.DocumentParseComplete += (sender, args) =>
-                {
-                    capturedArgs = args;
-                    parseComplete.Set();
-                };
-
-                // Act
-                parser.CheckForStructureChanges(new TextChange(0, 0, new StringTextBuffer(string.Empty), input.Length, input));
-
-                // Assert
-                MiscUtils.DoWithTimeoutIfNotDebugging(parseComplete.Wait);
-
-                Assert.Equal(
-                    SimpleCSHTMLDocumentGenerated.ReadAllText(),
-                    capturedArgs.GeneratorResults.GeneratedCode);
-            }
-        }
-
-        [Fact]
-        public void CheckForStructureChangesStartsFullReparseIfChangeOverlapsMultipleSpans()
-        {
-            // Arrange
-            using (var parser = new RazorEditorParser(CreateHost(), TestLinePragmaFileName))
-            {
-                var original = new StringTextBuffer("Foo @bar Baz");
-                var changed = new StringTextBuffer("Foo @bap Daz");
-                var change = new TextChange(7, 3, original, 3, changed);
-
-                var parseComplete = new ManualResetEventSlim();
-                var parseCount = 0;
-                parser.DocumentParseComplete += (sender, args) =>
-                {
-                    Interlocked.Increment(ref parseCount);
-                    parseComplete.Set();
-                };
-
-                Assert.Equal(PartialParseResult.Rejected, parser.CheckForStructureChanges(new TextChange(0, 0, new StringTextBuffer(string.Empty), 12, original)));
-                MiscUtils.DoWithTimeoutIfNotDebugging(parseComplete.Wait); // Wait for the parse to finish
-                parseComplete.Reset();
-
-                // Act
-                var result = parser.CheckForStructureChanges(change);
-
-                // Assert
-                Assert.Equal(PartialParseResult.Rejected, result);
-                MiscUtils.DoWithTimeoutIfNotDebugging(parseComplete.Wait);
-                Assert.Equal(2, parseCount);
-            }
-        }
-
-        private TextChange CreateDummyChange()
-        {
-            return new TextChange(0, 0, new StringTextBuffer(string.Empty), 3, new StringTextBuffer("foo"));
-        }
-
-        private static RazorEditorParser CreateClientParser()
-        {
-            return new RazorEditorParser(CreateHost(), TestLinePragmaFileName);
-        }
-    }
-}

test/Microsoft.AspNetCore.Razor.Test/Editor/SpanEditHandlerTest.cs

@@ -3,11 +3,11 @@
 
 using System.Collections.Generic;
 using System.Linq;
-using Microsoft.AspNetCore.Razor.Editor;
+using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Parser.SyntaxTree
+namespace Microsoft.AspNetCore.Razor.Editor
 {
     public class SpanEditHandlerTest
     {

test/Microsoft.AspNetCore.Razor.Test/Framework/RawTextSymbol.cs

@@ -8,7 +8,7 @@ using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 
 namespace Microsoft.AspNetCore.Razor.Test.Framework
 {
-    internal class RawTextSymbol : ISymbol
+    public class RawTextSymbol : ISymbol
     {
         public SourceLocation Start { get; private set; }
         public string Content { get; }

test/Microsoft.AspNetCore.Razor.Test/Parser/CSharpAutoCompleteTest.cs

@@ -4,13 +4,12 @@
 using System;
 using Microsoft.AspNetCore.Razor.Chunks.Generators;
 using Microsoft.AspNetCore.Razor.Editor;
-using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class CSharpAutoCompleteTest : CsHtmlCodeParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/CSharpBlockTest.cs

@@ -3,7 +3,6 @@
 
 using System;
 using Microsoft.AspNetCore.Razor.Chunks.Generators;
-using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Microsoft.AspNetCore.Razor.Text;
@@ -11,7 +10,7 @@ using Microsoft.AspNetCore.Razor.Tokenizer.Internal;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class CSharpBlockTest : CsHtmlCodeParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/CSharpDirectivesTest.cs

@@ -2,12 +2,11 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using Microsoft.AspNetCore.Razor.Chunks.Generators;
-using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class CSharpDirectivesTest : CsHtmlCodeParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/CSharpErrorTest.cs

@@ -3,12 +3,11 @@
 
 using System;
 using Microsoft.AspNetCore.Razor.Editor;
-using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class CSharpErrorTest : CsHtmlCodeParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/CSharpExplicitExpressionTest.cs

@@ -6,7 +6,7 @@ using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class CSharpExplicitExpressionTest : CsHtmlCodeParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/CSharpImplicitExpressionTest.cs

@@ -2,12 +2,11 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
-using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class CSharpImplicitExpressionTest : CsHtmlCodeParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/CSharpNestedStatementsTest.cs

@@ -1,12 +1,11 @@
 // 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 Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class CSharpNestedStatementsTest : CsHtmlCodeParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/CSharpRazorCommentsTest.cs

@@ -3,14 +3,13 @@
 
 using System;
 using Microsoft.AspNetCore.Razor.Chunks.Generators;
-using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols.Internal;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class CSharpRazorCommentsTest : CsHtmlMarkupParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/CSharpReservedWordsTest.cs

@@ -1,12 +1,11 @@
 // 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 Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
+namespace Microsoft.AspNetCore.Razor.Parser.Internal
 {
     public class CSharpReservedWordsTest : CsHtmlCodeParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/CSharpSectionTest.cs

@@ -3,14 +3,13 @@
 
 using System;
 using Microsoft.AspNetCore.Razor.Chunks.Generators;
-using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Microsoft.AspNetCore.Razor.Text;
 using Microsoft.AspNetCore.Razor.Tokenizer.Internal;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
+namespace Microsoft.AspNetCore.Razor.Parser.Internal
 {
     public class CSharpSectionTest : CsHtmlMarkupParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/CSharpSpecialBlockTest.cs

@@ -2,12 +2,11 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
-using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
+namespace Microsoft.AspNetCore.Razor.Parser.Internal
 {
     public class CSharpSpecialBlockTest : CsHtmlCodeParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/CSharpStatementTest.cs

@@ -3,12 +3,11 @@
 
 using System;
 using Microsoft.AspNetCore.Razor.Chunks.Generators;
-using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
+namespace Microsoft.AspNetCore.Razor.Parser.Internal
 {
     // Basic Tests for C# Statements:
     //  * Basic case for each statement

test/Microsoft.AspNetCore.Razor.Test/Parser/CSharpTemplateTest.cs

@@ -4,15 +4,13 @@
 using System;
 using Microsoft.AspNetCore.Razor.Chunks.Generators;
 using Microsoft.AspNetCore.Razor.Editor;
-using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Microsoft.AspNetCore.Razor.Text;
-using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols.Internal;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
+namespace Microsoft.AspNetCore.Razor.Parser.Internal
 {
     public class CSharpTemplateTest : CsHtmlCodeParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/CSharpToMarkupSwitchTest.cs

@@ -2,16 +2,13 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
-using Microsoft.AspNetCore.Razor.Chunks.Generators;
 using Microsoft.AspNetCore.Razor.Editor;
-using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
-using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols.Internal;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class CSharpToMarkupSwitchTest : CsHtmlCodeParserTestBase
     {
@@ -460,7 +457,7 @@ namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
                                    Factory.Markup(Environment.NewLine).Accepts(AcceptedCharacters.None)
                                    ),
                                Factory.Code(
-                                $"        return;{Environment.NewLine}    case 2:{Environment.NewLine}"+
+                                $"        return;{Environment.NewLine}    case 2:{Environment.NewLine}" +
                                 "        {" + Environment.NewLine).AsStatement(),
                                new MarkupBlock(
                                    Factory.Markup("            "),

test/Microsoft.AspNetCore.Razor.Test/Parser/CSharpVerbatimBlockTest.cs

@@ -6,7 +6,7 @@ using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class CSharpVerbatimBlockTest : CsHtmlCodeParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/CSharpWhitespaceHandlingTest.cs

@@ -3,14 +3,12 @@
 
 using System;
 using Microsoft.AspNetCore.Razor.Editor;
-using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
-using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols.Internal;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.CSharp
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class CSharpWhitespaceHandlingTest : CsHtmlMarkupParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/DisposableActionTest.cs

@@ -2,10 +2,9 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 
-using Microsoft.AspNetCore.Razor.Parser;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Utils
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class DisposableActionTest
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/HtmlToCodeSwitchTest.cs

@@ -4,15 +4,14 @@
 using System;
 using Microsoft.AspNetCore.Razor.Chunks.Generators;
 using Microsoft.AspNetCore.Razor.Editor;
-using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
+using Microsoft.AspNetCore.Razor.Test.Parser.Internal;
 using Microsoft.AspNetCore.Razor.Text;
-using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols.Internal;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.Html
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class HtmlToCodeSwitchTest : CsHtmlMarkupParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/Internal/CallbackVisitorTest.cs

@@ -3,15 +3,14 @@
 
 using System;
 using System.Threading;
-using Microsoft.AspNetCore.Razor.Parser.Internal;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Moq;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser
+namespace Microsoft.AspNetCore.Razor.Parser.Internal
 {
-    public class CallbackParserListenerTest
+    public class CallbackVisitorTest
     {
         [Fact]
         public void ListenerConstructedWithSpanCallbackCallsCallbackOnEndSpan()

test/Microsoft.AspNetCore.Razor.Test/Parser/Internal/HtmlAttributeTest.cs

@@ -4,14 +4,12 @@
 using System;
 using System.Linq;
 using Microsoft.AspNetCore.Razor.Chunks.Generators;
-using Microsoft.AspNetCore.Razor.Parser;
-using Microsoft.AspNetCore.Razor.Parser.Internal;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Microsoft.AspNetCore.Razor.Text;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.Html
+namespace Microsoft.AspNetCore.Razor.Parser.Internal
 {
     public class HtmlAttributeTest : CsHtmlMarkupParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/Internal/HtmlBlockTest.cs

@@ -4,8 +4,6 @@
 using System;
 using Microsoft.AspNetCore.Razor.Chunks.Generators;
 using Microsoft.AspNetCore.Razor.Editor;
-using Microsoft.AspNetCore.Razor.Parser;
-using Microsoft.AspNetCore.Razor.Parser.Internal;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Microsoft.AspNetCore.Razor.Text;
@@ -13,7 +11,7 @@ using Microsoft.AspNetCore.Razor.Tokenizer.Internal;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols.Internal;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.Html
+namespace Microsoft.AspNetCore.Razor.Parser.Internal
 {
     public class HtmlBlockTest : CsHtmlMarkupParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/Internal/HtmlDocumentTest.cs

@@ -4,16 +4,15 @@
 using System;
 using Microsoft.AspNetCore.Razor.Chunks.Generators;
 using Microsoft.AspNetCore.Razor.Editor;
-using Microsoft.AspNetCore.Razor.Parser;
-using Microsoft.AspNetCore.Razor.Parser.Internal;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
+using Microsoft.AspNetCore.Razor.Test.Utils;
 using Microsoft.AspNetCore.Razor.Text;
 using Microsoft.AspNetCore.Razor.Tokenizer.Internal;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols.Internal;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.Html
+namespace Microsoft.AspNetCore.Razor.Parser.Internal
 {
     public class HtmlDocumentTest : CsHtmlMarkupParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/Internal/HtmlErrorTest.cs

@@ -7,7 +7,7 @@ using Microsoft.AspNetCore.Razor.Test.Framework;
 using Microsoft.AspNetCore.Razor.Text;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.Html
+namespace Microsoft.AspNetCore.Razor.Parser.Internal
 {
     public class HtmlErrorTest : CsHtmlMarkupParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/Internal/HtmlParserTestUtils.cs

@@ -6,7 +6,7 @@ using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.Html
+namespace Microsoft.AspNetCore.Razor.Test.Parser.Internal
 {
     internal class HtmlParserTestUtils
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/Internal/HtmlTagsTest.cs

@@ -6,7 +6,7 @@ using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.Html
+namespace Microsoft.AspNetCore.Razor.Parser.Internal
 {
     public class HtmlTagsTest : CsHtmlMarkupParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/ParserContextTest.cs

@@ -3,16 +3,16 @@
 
 using System;
 using System.IO;
-using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.Internal;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
+using Microsoft.AspNetCore.Razor.Test.Utils;
 using Microsoft.AspNetCore.Razor.Text;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Moq;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class ParserContextTest
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/ParserVisitorExtensionsTest.cs

@@ -3,13 +3,12 @@
 
 using System.Collections.Generic;
 using System.Linq;
-using Microsoft.AspNetCore.Razor.Parser;
-using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Compilation.TagHelpers;
+using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Moq;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class ParserVisitorExtensionsTest
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/RazorParserTest.cs

@@ -6,7 +6,6 @@ using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using Microsoft.AspNetCore.Razor.Compilation.TagHelpers;
-using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.Internal;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
@@ -14,7 +13,7 @@ using Moq;
 using Moq.Protected;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class RazorParserTest
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/SyntaxTree/BlockTest.cs

@@ -4,12 +4,11 @@
 using System.Linq;
 using System.Web.WebPages.TestUtils;
 using Microsoft.AspNetCore.Razor.Chunks.Generators;
-using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Microsoft.AspNetCore.Razor.Text;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser
+namespace Microsoft.AspNetCore.Razor.Parser.SyntaxTree
 {
     public class BlockTest
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/TagHelpers/Internal/TagHelperBlockRewriterTest.cs

@@ -6,16 +6,15 @@ using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
 using Microsoft.AspNetCore.Razor.Chunks.Generators;
-using Microsoft.AspNetCore.Razor.Parser;
+using Microsoft.AspNetCore.Razor.Compilation.TagHelpers;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
-using Microsoft.AspNetCore.Razor.Parser.TagHelpers;
 using Microsoft.AspNetCore.Razor.TagHelpers;
 using Microsoft.AspNetCore.Razor.Test.Framework;
-using Microsoft.AspNetCore.Razor.Test.TagHelpers;
+using Microsoft.AspNetCore.Razor.Test.Parser.TagHelpers.Internal;
 using Microsoft.AspNetCore.Razor.Text;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Compilation.TagHelpers
+namespace Microsoft.AspNetCore.Razor.Parser.TagHelpers.Internal
 {
     public class TagHelperBlockRewriterTest : TagHelperRewritingTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/TagHelpers/Internal/TagHelperParseTreeRewriterTest.cs

@@ -6,18 +6,16 @@ using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
 using Microsoft.AspNetCore.Razor.Chunks.Generators;
-using Microsoft.AspNetCore.Razor.Parser;
+using Microsoft.AspNetCore.Razor.Compilation.TagHelpers;
+using Microsoft.AspNetCore.Razor.Parser.Internal;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
 using Microsoft.AspNetCore.Razor.TagHelpers;
-using Microsoft.AspNetCore.Razor.Compilation.TagHelpers;
 using Microsoft.AspNetCore.Razor.Test.Framework;
+using Microsoft.AspNetCore.Razor.Test.Parser.TagHelpers.Internal;
 using Microsoft.AspNetCore.Razor.Text;
 using Xunit;
-using Microsoft.AspNetCore.Razor.Parser.TagHelpers.Internal;
-using Microsoft.AspNetCore.Razor.Parser.TagHelpers;
-using Microsoft.AspNetCore.Razor.Parser.Internal;
 
-namespace Microsoft.AspNetCore.Razor.Test.TagHelpers
+namespace Microsoft.AspNetCore.Razor.Parser.TagHelpers.Internal
 {
     public class TagHelperParseTreeRewriterTest : TagHelperRewritingTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/TagHelpers/Internal/TagHelperRewritingTestBase.cs

@@ -3,15 +3,14 @@
 
 using System.Collections.Generic;
 using System.Linq;
+using Microsoft.AspNetCore.Razor.Compilation.TagHelpers;
 using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.TagHelpers.Internal;
-using Microsoft.AspNetCore.Razor.Compilation.TagHelpers;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Microsoft.AspNetCore.Razor.Text;
-using Microsoft.AspNetCore.Razor.Tokenizer;
 using Microsoft.AspNetCore.Razor.Tokenizer.Internal;
 
-namespace Microsoft.AspNetCore.Razor.Test.TagHelpers
+namespace Microsoft.AspNetCore.Razor.Test.Parser.TagHelpers.Internal
 {
     public class TagHelperRewritingTestBase : CsHtmlMarkupParserTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/TagHelpers/TagHelperDirectiveSpanVisitorTest.cs

@@ -4,16 +4,15 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using Microsoft.AspNetCore.Razor.Parser;
+using Microsoft.AspNetCore.Razor.Compilation.TagHelpers;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
-using Microsoft.AspNetCore.Razor.Parser.TagHelpers;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Microsoft.AspNetCore.Razor.Tokenizer.Internal;
 using Microsoft.Extensions.Internal;
 using Moq;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Compilation.TagHelpers
+namespace Microsoft.AspNetCore.Razor.Parser.TagHelpers.Internal
 {
     public class TagHelperDirectiveSpanVisitorTest
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/TextReaderExtensionsTest.cs

@@ -3,11 +3,9 @@
 
 using System;
 using System.IO;
-using Microsoft.AspNetCore.Razor.Parser;
-using Microsoft.AspNetCore.Razor.Parser.Internal;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Text
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class TextReaderExtensionsTest
     {

test/Microsoft.AspNetCore.Razor.Test/Parser/WhitespaceRewriterTest.cs

@@ -1,12 +1,11 @@
 // 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 Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.Internal;
 using Microsoft.AspNetCore.Razor.Test.Framework;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser
+namespace Microsoft.AspNetCore.Razor.Parser
 {
     public class WhitespaceRewriterTest
     {

test/Microsoft.AspNetCore.Razor.Test/PartialParsingTestBase.cs

@@ -11,7 +11,7 @@ using Microsoft.AspNetCore.Razor.Test.Utils;
 using Microsoft.AspNetCore.Razor.Text;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.PartialParsing
+namespace Microsoft.AspNetCore.Razor
 {
     public abstract class PartialParsingTestBase<TLanguage>
         where TLanguage : RazorCodeLanguage, new()

test/Microsoft.AspNetCore.Razor.Test/RazorCodeLanguageTest.cs

@@ -3,7 +3,7 @@
 
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test
+namespace Microsoft.AspNetCore.Razor
 {
     public class RazorCodeLanguageTest
     {

test/Microsoft.AspNetCore.Razor.Test/RazorEditorParserTest.cs

@@ -2,17 +2,241 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
+using System.Threading;
 using System.Web.WebPages.TestUtils;
+using Microsoft.AspNetCore.Razor.Editor;
 using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.SyntaxTree;
+using Microsoft.AspNetCore.Razor.TagHelpers;
+using Microsoft.AspNetCore.Razor.Test.CodeGenerators;
 using Microsoft.AspNetCore.Razor.Test.Framework;
+using Microsoft.AspNetCore.Razor.Test.Utils;
 using Microsoft.AspNetCore.Razor.Text;
+using Microsoft.AspNetCore.Testing;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Parser.PartialParsing
+namespace Microsoft.AspNetCore.Razor
 {
-    public class CSharpPartialParsingTest : PartialParsingTestBase<CSharpRazorCodeLanguage>
+    public class RazorEditorParserTest : PartialParsingTestBase<CSharpRazorCodeLanguage>
     {
+        private static readonly TestFile SimpleCSHTMLDocument = TestFile.Create("TestFiles/DesignTime/Simple.cshtml");
+        private static readonly TestFile SimpleCSHTMLDocumentGenerated = TestFile.Create("TestFiles/DesignTime/Simple.txt");
+        private const string TestLinePragmaFileName = "C:\\This\\Path\\Is\\Just\\For\\Line\\Pragmas.cshtml";
+
+        [Fact]
+        public void ConstructorRequiresNonNullPhysicalPath()
+        {
+            Assert.Throws<ArgumentException>("sourceFileName", () => new RazorEditorParser(CreateCodeGenTestHost(), null));
+        }
+
+        [Fact]
+        public void ConstructorRequiresNonEmptyPhysicalPath()
+        {
+            Assert.Throws<ArgumentException>("sourceFileName", () => new RazorEditorParser(CreateCodeGenTestHost(), string.Empty));
+        }
+
+        [Theory]
+        [InlineData(" ")]
+        [InlineData("\r\n")]
+        [InlineData("abcdefg")]
+        [InlineData("\f\r\n abcd   \t")]
+        public void TreesAreDifferentReturnsFalseForAddedContent(string content)
+        {
+            // Arrange
+            var factory = SpanFactory.CreateCsHtml();
+            var blockFactory = new BlockFactory(factory);
+            var original = new MarkupBlock(
+                blockFactory.MarkupTagBlock("<p>"),
+                blockFactory.TagHelperBlock(
+                    tagName: "div",
+                    tagMode: TagMode.StartTagAndEndTag,
+                    start: new SourceLocation(3, 0, 3),
+                    startTag: blockFactory.MarkupTagBlock("<div>"),
+                    children: new SyntaxTreeNode[]
+                    {
+                        factory.Markup($"{Environment.NewLine}{Environment.NewLine}")
+                    },
+                    endTag: blockFactory.MarkupTagBlock("</div>")),
+                blockFactory.MarkupTagBlock("</p>"));
+
+            factory.Reset();
+
+            var modified = new MarkupBlock(
+                blockFactory.MarkupTagBlock("<p>"),
+                blockFactory.TagHelperBlock(
+                    tagName: "div",
+                    tagMode: TagMode.StartTagAndEndTag,
+                    start: new SourceLocation(3, 0, 3),
+                    startTag: blockFactory.MarkupTagBlock("<div>"),
+                    children: new SyntaxTreeNode[]
+                    {
+                        factory.Markup($"{Environment.NewLine}{content}{Environment.NewLine}")
+                    },
+                    endTag: blockFactory.MarkupTagBlock("</div>")),
+                blockFactory.MarkupTagBlock("</p>"));
+            original.LinkNodes();
+            modified.LinkNodes();
+
+            var oldBuffer = new StringTextBuffer($"<p><div>{Environment.NewLine}{Environment.NewLine}</div></p>");
+            var newBuffer = new StringTextBuffer(
+                $"<p><div>{Environment.NewLine}{content}{Environment.NewLine}</div></p>");
+
+            // Act
+            var treesAreDifferent = BackgroundParser.TreesAreDifferent(
+                original,
+                modified,
+                new[]
+                {
+                    new TextChange(
+                        position: 8 + Environment.NewLine.Length,
+                        oldLength: 0,
+                        oldBuffer: oldBuffer,
+                        newLength: content.Length,
+                        newBuffer: newBuffer)
+                });
+
+            // Assert
+            Assert.False(treesAreDifferent);
+        }
+
+        [Fact]
+        public void TreesAreDifferentReturnsTrueIfTreeStructureIsDifferent()
+        {
+            var factory = SpanFactory.CreateCsHtml();
+            var original = new MarkupBlock(
+                factory.Markup("<p>"),
+                new ExpressionBlock(
+                    factory.CodeTransition()),
+                factory.Markup("</p>"));
+            var modified = new MarkupBlock(
+                factory.Markup("<p>"),
+                new ExpressionBlock(
+                    factory.CodeTransition("@"),
+                    factory.Code("f")
+                           .AsImplicitExpression(CSharpCodeParser.DefaultKeywords, acceptTrailingDot: false)),
+                factory.Markup("</p>"));
+            var oldBuffer = new StringTextBuffer("<p>@</p>");
+            var newBuffer = new StringTextBuffer("<p>@f</p>");
+            Assert.True(BackgroundParser.TreesAreDifferent(
+                original,
+                modified,
+                new[]
+                {
+                    new TextChange(position: 4, oldLength: 0, oldBuffer: oldBuffer, newLength: 1, newBuffer: newBuffer)
+                }));
+        }
+
+        [Fact]
+        public void TreesAreDifferentReturnsFalseIfTreeStructureIsSame()
+        {
+            var factory = SpanFactory.CreateCsHtml();
+            var original = new MarkupBlock(
+                factory.Markup("<p>"),
+                new ExpressionBlock(
+                    factory.CodeTransition(),
+                    factory.Code("f")
+                           .AsImplicitExpression(CSharpCodeParser.DefaultKeywords, acceptTrailingDot: false)),
+                factory.Markup("</p>"));
+            factory.Reset();
+            var modified = new MarkupBlock(
+                factory.Markup("<p>"),
+                new ExpressionBlock(
+                    factory.CodeTransition(),
+                    factory.Code("foo")
+                           .AsImplicitExpression(CSharpCodeParser.DefaultKeywords, acceptTrailingDot: false)),
+                factory.Markup("</p>"));
+            original.LinkNodes();
+            modified.LinkNodes();
+            var oldBuffer = new StringTextBuffer("<p>@f</p>");
+            var newBuffer = new StringTextBuffer("<p>@foo</p>");
+            Assert.False(BackgroundParser.TreesAreDifferent(
+                original,
+                modified,
+                new[]
+                {
+                    new TextChange(position: 5, oldLength: 0, oldBuffer: oldBuffer, newLength: 2, newBuffer: newBuffer)
+                }));
+        }
+
+        [Fact]
+        public void CheckForStructureChangesRequiresNonNullBufferInChange()
+        {
+            var change = new TextChange();
+            var parameterName = "change";
+            var exception = Assert.Throws<ArgumentException>(
+                parameterName,
+                () =>
+                {
+                    using (var parser = new RazorEditorParser(CreateCodeGenTestHost(), "C:\\Foo.cshtml"))
+                    {
+                        parser.CheckForStructureChanges(change);
+                    }
+                });
+            ExceptionHelpers.ValidateArgumentException(parameterName, RazorResources.FormatStructure_Member_CannotBeNull(nameof(change.NewBuffer), nameof(TextChange)), exception);
+        }
+
+        [Fact]
+        [ReplaceCulture]
+        public void CheckForStructureChangesStartsReparseAndFiresDocumentParseCompletedEventIfNoAdditionalChangesQueued()
+        {
+            // Arrange
+            using (var parser = new RazorEditorParser(CreateCodeGenTestHost(), TestLinePragmaFileName))
+            {
+                var input = new StringTextBuffer(SimpleCSHTMLDocument.ReadAllText());
+
+                DocumentParseCompleteEventArgs capturedArgs = null;
+                var parseComplete = new ManualResetEventSlim(false);
+
+                parser.DocumentParseComplete += (sender, args) =>
+                {
+                    capturedArgs = args;
+                    parseComplete.Set();
+                };
+
+                // Act
+                parser.CheckForStructureChanges(new TextChange(0, 0, new StringTextBuffer(string.Empty), input.Length, input));
+
+                // Assert
+                MiscUtils.DoWithTimeoutIfNotDebugging(parseComplete.Wait);
+
+                Assert.Equal(
+                    SimpleCSHTMLDocumentGenerated.ReadAllText(),
+                    capturedArgs.GeneratorResults.GeneratedCode);
+            }
+        }
+
+        [Fact]
+        public void CheckForStructureChangesStartsFullReparseIfChangeOverlapsMultipleSpans()
+        {
+            // Arrange
+            using (var parser = new RazorEditorParser(CreateHost(), TestLinePragmaFileName))
+            {
+                var original = new StringTextBuffer("Foo @bar Baz");
+                var changed = new StringTextBuffer("Foo @bap Daz");
+                var change = new TextChange(7, 3, original, 3, changed);
+
+                var parseComplete = new ManualResetEventSlim();
+                var parseCount = 0;
+                parser.DocumentParseComplete += (sender, args) =>
+                {
+                    Interlocked.Increment(ref parseCount);
+                    parseComplete.Set();
+                };
+
+                Assert.Equal(PartialParseResult.Rejected, parser.CheckForStructureChanges(new TextChange(0, 0, new StringTextBuffer(string.Empty), 12, original)));
+                MiscUtils.DoWithTimeoutIfNotDebugging(parseComplete.Wait); // Wait for the parse to finish
+                parseComplete.Reset();
+
+                // Act
+                var result = parser.CheckForStructureChanges(change);
+
+                // Assert
+                Assert.Equal(PartialParseResult.Rejected, result);
+                MiscUtils.DoWithTimeoutIfNotDebugging(parseComplete.Wait);
+                Assert.Equal(2, parseCount);
+            }
+        }
+
         [Fact]
         public void AwaitPeriodInsertionAcceptedProvisionally()
         {
@@ -669,5 +893,10 @@ namespace Microsoft.AspNetCore.Razor.Test.Parser.PartialParsing
         {
             RunTypeKeywordTest("class");
         }
+
+        private static RazorEngineHost CreateCodeGenTestHost()
+        {
+            return new CodeGenTestHost(new CSharpRazorCodeLanguage()) { DesignTimeMode = true };
+        }
     }
 }

test/Microsoft.AspNetCore.Razor.Test/RazorEngineHostTest.cs

@@ -7,7 +7,7 @@ using Microsoft.AspNetCore.Razor.Parser;
 using Microsoft.AspNetCore.Razor.Parser.Internal;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test
+namespace Microsoft.AspNetCore.Razor
 {
     public class RazorEngineHostTest
     {

test/Microsoft.AspNetCore.Razor.Test/RazorTemplateEngineTest.cs

@@ -14,7 +14,7 @@ using Microsoft.AspNetCore.Razor.Text;
 using Moq;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test
+namespace Microsoft.AspNetCore.Razor
 {
     public class RazorTemplateEngineTest
     {

test/Microsoft.AspNetCore.Razor.Test/TestFiles/CodeGenerator/Output/EnumTagHelpers.DesignTime.cs

@@ -48,19 +48,19 @@ __TestNamespace_InputTagHelper.Value = MyEnum.MyValue;
             __TestNamespace_InputTagHelper = CreateTagHelper<global::TestNamespace.InputTagHelper>();
             __TestNamespace_CatchAllTagHelper = CreateTagHelper<global::TestNamespace.CatchAllTagHelper>();
 #line 9 "EnumTagHelpers.cshtml"
-__TestNamespace_InputTagHelper.Value = global::Microsoft.AspNetCore.Razor.Test.Generator.MyEnum.MyValue;
+__TestNamespace_InputTagHelper.Value = global::Microsoft.AspNetCore.Razor.Test.CodeGenerators.MyEnum.MyValue;
 
 #line default
 #line hidden
             __TestNamespace_InputTagHelper = CreateTagHelper<global::TestNamespace.InputTagHelper>();
             __TestNamespace_CatchAllTagHelper = CreateTagHelper<global::TestNamespace.CatchAllTagHelper>();
 #line 10 "EnumTagHelpers.cshtml"
-__TestNamespace_InputTagHelper.Value = global::Microsoft.AspNetCore.Razor.Test.Generator.MyEnum.MySecondValue;
+__TestNamespace_InputTagHelper.Value = global::Microsoft.AspNetCore.Razor.Test.CodeGenerators.MyEnum.MySecondValue;
 
 #line default
 #line hidden
 #line 10 "EnumTagHelpers.cshtml"
-__TestNamespace_CatchAllTagHelper.CatchAll = global::Microsoft.AspNetCore.Razor.Test.Generator.MyEnum.MyValue;
+__TestNamespace_CatchAllTagHelper.CatchAll = global::Microsoft.AspNetCore.Razor.Test.CodeGenerators.MyEnum.MyValue;
 
 #line default
 #line hidden

test/Microsoft.AspNetCore.Razor.Test/TestFiles/CodeGenerator/Output/EnumTagHelpers.cs

@@ -89,7 +89,7 @@ AddHtmlAttributeValue("", 128, MyEnum.MySecondValue, 128, 21, false);
             __TestNamespace_CatchAllTagHelper = CreateTagHelper<global::TestNamespace.CatchAllTagHelper>();
             __tagHelperExecutionContext.Add(__TestNamespace_CatchAllTagHelper);
 #line 9 "EnumTagHelpers.cshtml"
-__TestNamespace_InputTagHelper.Value = global::Microsoft.AspNetCore.Razor.Test.Generator.MyEnum.MyValue;
+__TestNamespace_InputTagHelper.Value = global::Microsoft.AspNetCore.Razor.Test.CodeGenerators.MyEnum.MyValue;
 
 #line default
 #line hidden
@@ -110,13 +110,13 @@ __TestNamespace_InputTagHelper.Value = global::Microsoft.AspNetCore.Razor.Test.G
             __TestNamespace_CatchAllTagHelper = CreateTagHelper<global::TestNamespace.CatchAllTagHelper>();
             __tagHelperExecutionContext.Add(__TestNamespace_CatchAllTagHelper);
 #line 10 "EnumTagHelpers.cshtml"
-__TestNamespace_InputTagHelper.Value = global::Microsoft.AspNetCore.Razor.Test.Generator.MyEnum.MySecondValue;
+__TestNamespace_InputTagHelper.Value = global::Microsoft.AspNetCore.Razor.Test.CodeGenerators.MyEnum.MySecondValue;
 
 #line default
 #line hidden
             __tagHelperExecutionContext.AddTagHelperAttribute("value", __TestNamespace_InputTagHelper.Value, global::Microsoft.AspNetCore.Razor.TagHelpers.HtmlAttributeValueStyle.DoubleQuotes);
 #line 10 "EnumTagHelpers.cshtml"
-__TestNamespace_CatchAllTagHelper.CatchAll = global::Microsoft.AspNetCore.Razor.Test.Generator.MyEnum.MyValue;
+__TestNamespace_CatchAllTagHelper.CatchAll = global::Microsoft.AspNetCore.Razor.Test.CodeGenerators.MyEnum.MyValue;
 
 #line default
 #line hidden

test/Microsoft.AspNetCore.Razor.Test/Text/LineTrackingStringBufferTest.cs

@@ -1,10 +1,9 @@
 // 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 Microsoft.AspNetCore.Razor.Text;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Text
+namespace Microsoft.AspNetCore.Razor.Text
 {
     public class LineTrackingStringBufferTest
     {

test/Microsoft.AspNetCore.Razor.Test/Text/LookaheadTextReaderTestBase.cs

@@ -3,10 +3,9 @@
 
 using System;
 using System.Text;
-using Microsoft.AspNetCore.Razor.Text;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Text
+namespace Microsoft.AspNetCore.Razor.Text
 {
     public abstract class LookaheadTextReaderTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Text/SourceLocationTrackerTest.cs

@@ -1,10 +1,9 @@
 // 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 Microsoft.AspNetCore.Razor.Text;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Text
+namespace Microsoft.AspNetCore.Razor.Text
 {
     public class SourceLocationTrackerTest
     {

test/Microsoft.AspNetCore.Razor.Test/Text/TextChangeTest.cs

@@ -3,11 +3,11 @@
 
 using System;
 using System.Web.WebPages.TestUtils;
-using Microsoft.AspNetCore.Razor.Text;
+using Microsoft.AspNetCore.Razor.Test.Utils;
 using Moq;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Text
+namespace Microsoft.AspNetCore.Razor.Text
 {
     public class TextChangeTest
     {

test/Microsoft.AspNetCore.Razor.Test/Tokenizer/Internal/CSharpTokenizerCommentTest.cs

@@ -1,10 +1,11 @@
 // 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 Microsoft.AspNetCore.Razor.Test.Tokenizer.Internal;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Tokenizer
+namespace Microsoft.AspNetCore.Razor.Tokenizer.Internal
 {
     public class CSharpTokenizerCommentTest : CSharpTokenizerTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Tokenizer/Internal/CSharpTokenizerIdentifierTest.cs

@@ -1,10 +1,11 @@
 // 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 Microsoft.AspNetCore.Razor.Test.Tokenizer.Internal;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Tokenizer
+namespace Microsoft.AspNetCore.Razor.Tokenizer.Internal
 {
     public class CSharpTokenizerIdentifierTest : CSharpTokenizerTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Tokenizer/Internal/CSharpTokenizerLiteralTest.cs

@@ -2,10 +2,11 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
+using Microsoft.AspNetCore.Razor.Test.Tokenizer.Internal;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Tokenizer
+namespace Microsoft.AspNetCore.Razor.Tokenizer.Internal
 {
     public class CSharpTokenizerLiteralTest : CSharpTokenizerTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Tokenizer/Internal/CSharpTokenizerOperatorsTest.cs

@@ -1,10 +1,11 @@
 // 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 Microsoft.AspNetCore.Razor.Test.Tokenizer.Internal;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Tokenizer
+namespace Microsoft.AspNetCore.Razor.Tokenizer.Internal
 {
     public class CSharpTokenizerOperatorsTest : CSharpTokenizerTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Tokenizer/Internal/CSharpTokenizerTest.cs

@@ -1,10 +1,11 @@
 // 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 Microsoft.AspNetCore.Razor.Test.Tokenizer.Internal;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Tokenizer
+namespace Microsoft.AspNetCore.Razor.Tokenizer.Internal
 {
     public class CSharpTokenizerTest : CSharpTokenizerTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Tokenizer/Internal/CSharpTokenizerTestBase.cs

@@ -6,7 +6,7 @@ using Microsoft.AspNetCore.Razor.Tokenizer;
 using Microsoft.AspNetCore.Razor.Tokenizer.Internal;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 
-namespace Microsoft.AspNetCore.Razor.Test.Tokenizer
+namespace Microsoft.AspNetCore.Razor.Test.Tokenizer.Internal
 {
     public abstract class CSharpTokenizerTestBase : TokenizerTestBase<CSharpSymbol, CSharpSymbolType>
     {

test/Microsoft.AspNetCore.Razor.Test/Tokenizer/Internal/HtmlTokenizerTest.cs

@@ -1,11 +1,11 @@
 // 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 Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
+using Microsoft.AspNetCore.Razor.Test.Tokenizer.Internal;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols.Internal;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Tokenizer
+namespace Microsoft.AspNetCore.Razor.Tokenizer.Internal
 {
     public class HtmlTokenizerTest : HtmlTokenizerTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Tokenizer/Internal/HtmlTokenizerTestBase.cs

@@ -6,7 +6,7 @@ using Microsoft.AspNetCore.Razor.Tokenizer;
 using Microsoft.AspNetCore.Razor.Tokenizer.Internal;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols.Internal;
 
-namespace Microsoft.AspNetCore.Razor.Test.Tokenizer
+namespace Microsoft.AspNetCore.Razor.Test.Tokenizer.Internal
 {
     public abstract class HtmlTokenizerTestBase : TokenizerTestBase<HtmlSymbol, HtmlSymbolType>
     {

test/Microsoft.AspNetCore.Razor.Test/Tokenizer/Internal/TokenizerLookaheadTest.cs

@@ -5,14 +5,13 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Text;
+using Microsoft.AspNetCore.Razor.Test.Tokenizer.Internal;
 using Microsoft.AspNetCore.Razor.Text;
-using Microsoft.AspNetCore.Razor.Tokenizer;
-using Microsoft.AspNetCore.Razor.Tokenizer.Internal;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols;
 using Microsoft.AspNetCore.Razor.Tokenizer.Symbols.Internal;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test.Tokenizer
+namespace Microsoft.AspNetCore.Razor.Tokenizer.Internal
 {
     public class TokenizerLookaheadTest : HtmlTokenizerTestBase
     {

test/Microsoft.AspNetCore.Razor.Test/Utils/ExceptionHelpers.cs

@@ -4,7 +4,7 @@
 using System;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test
+namespace Microsoft.AspNetCore.Razor.Test.Utils
 {
     public static class ExceptionHelpers
     {

test/Microsoft.AspNetCore.Razor.Test/Utils/TestFile.cs

@@ -6,7 +6,7 @@ using System.IO;
 using System.Reflection;
 using Xunit;
 
-namespace Microsoft.AspNetCore.Razor.Test
+namespace Microsoft.AspNetCore.Razor.Test.Utils
 {
     public class TestFile
     {