Add helper methods to Verify operation tree for annonated text within a source file.

These APIs will be used in autogenerated unit test for Operation tree verification.

src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests.cs

@@ -10,7 +10,7 @@
 
 namespace Microsoft.CodeAnalysis.CSharp.UnitTests
 {
-    public partial class IOperationTests : CompilingTestBase
+    public partial class IOperationTests : SemanticModelTestBase
     {
         [Fact]
         [WorkItem(382240, "https://devdiv.visualstudio.com/DevDiv/_workitems?id=382240")]

src/Compilers/CSharp/Test/Semantic/IOperation/IOperationTests_ISymbolInitializer.cs

@@ -9,7 +9,7 @@
 
 namespace Microsoft.CodeAnalysis.CSharp.UnitTests
 {
-    public partial class IOperationTests : CompilingTestBase
+    public partial class IOperationTests : SemanticModelTestBase
     {
         [Fact, WorkItem(17595, "https://github.com/dotnet/roslyn/issues/17595")]
         public void NoInitializers()

src/Compilers/Test/Utilities/CSharp/SemanticModelTestBase.cs

@@ -6,9 +6,8 @@
 using Microsoft.CodeAnalysis.CSharp.Symbols;
 using Microsoft.CodeAnalysis.CSharp.Syntax;
 using Microsoft.CodeAnalysis.CSharp.Test.Utilities;
-using Microsoft.CodeAnalysis.Text;
+using Microsoft.CodeAnalysis.Test.Utilities;
 using Xunit;
-using Roslyn.Test.Utilities;
 
 namespace Microsoft.CodeAnalysis.CSharp.UnitTests
 {
@@ -220,5 +219,41 @@ protected CompilationUtils.SemanticInfoSummary GetSemanticInfoForTest(string tes
         {
             return GetSemanticInfoForTest<ExpressionSyntax>(testSrc);
         }
+
+        protected string GetOperationTreeForTest<TSyntaxNode>(CSharpCompilation compilation)
+            where TSyntaxNode: SyntaxNode
+        {
+            var tree = compilation.SyntaxTrees[0];
+            var model = compilation.GetSemanticModel(tree);
+            SyntaxNode syntaxNode = GetSyntaxNodeOfTypeForBinding<TSyntaxNode>(GetSyntaxNodeList(tree));
+            if (syntaxNode == null)
+            {
+                return null;
+            }
+
+            var operation = model.GetOperationInternal(syntaxNode);
+            return operation != null ? OperationTreeVerifier.GetOperationTree(operation) : null;
+        }
+
+        protected string GetOperationTreeForTest<TSyntaxNode>(string testSrc, string expectedOperationTree, CSharpParseOptions parseOptions = null)
+            where TSyntaxNode : SyntaxNode
+        {
+            var compilation = CreateCompilationWithMscorlib(testSrc, new[] { SystemCoreRef }, parseOptions: parseOptions);
+            return GetOperationTreeForTest<TSyntaxNode>(compilation);
+        }
+
+        protected void VerifyOperationTreeForTest<TSyntaxNode>(CSharpCompilation compilation, string expectedOperationTree)
+            where TSyntaxNode : SyntaxNode
+        {
+            var actualOperationTree = GetOperationTreeForTest<TSyntaxNode>(compilation);
+            OperationTreeVerifier.Verify(expectedOperationTree, actualOperationTree);
+        }
+
+        protected void VerifyOperationTreeForTest<TSyntaxNode>(string testSrc, string expectedOperationTree, CSharpParseOptions parseOptions = null)
+            where TSyntaxNode : SyntaxNode
+        {
+            var actualOperationTree = GetOperationTreeForTest<TSyntaxNode>(testSrc, expectedOperationTree, parseOptions);
+            OperationTreeVerifier.Verify(expectedOperationTree, actualOperationTree);
+        }
     }
 }

src/Compilers/Test/Utilities/VisualBasic/SemanticModelTestBase.vb

 ' Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
 
+Imports Microsoft.CodeAnalysis.Test.Utilities
 Imports Microsoft.CodeAnalysis.Text
 Imports Microsoft.CodeAnalysis.VisualBasic.Symbols
 Imports Microsoft.CodeAnalysis.VisualBasic.Syntax
@@ -151,4 +152,32 @@ Public MustInherit Class SemanticModelTestBase : Inherits BasicTestBase
             ).Where(Function(s) anyArity OrElse DirectCast(s, Symbol).GetArity() = arity.Value).ToList()
     End Function
 
+    Friend Function GetOperationTreeForTest(Of TSyntaxNode As SyntaxNode)(compilation As VisualBasicCompilation, fileName As String, Optional which As Integer = 0) As String
+        Dim node As SyntaxNode = CompilationUtils.FindBindingText(Of TSyntaxNode)(compilation, fileName, which)
+        If node Is Nothing Then
+            Return Nothing
+        End If
+
+        Dim tree = (From t In compilation.SyntaxTrees Where t.FilePath = fileName).Single()
+        Dim semanticModel = compilation.GetSemanticModel(tree)
+        Dim operation = semanticModel.GetOperationInternal(node)
+        Return If(operation IsNot Nothing, OperationTreeVerifier.GetOperationTree(operation), Nothing)
+    End Function
+
+    Friend Function GetOperationTreeForTest(Of TSyntaxNode As SyntaxNode)(testSrc As String, Optional parseOptions As VisualBasicParseOptions = Nothing, Optional which As Integer = 0) As String
+        Dim fileName = "a.vb"
+        Dim syntaxTree = Parse(testSrc, fileName, parseOptions)
+        Dim compilation = CreateCompilationWithMscorlib(syntaxTree)
+        Return GetOperationTreeForTest(Of TSyntaxNode)(compilation, fileName, which)
+    End Function
+
+    Friend Sub VerifyOperationTreeForTest(Of TSyntaxNode As SyntaxNode)(compilation As VisualBasicCompilation, fileName As String, expectedOperationTree As String, Optional which As Integer = 0)
+        Dim actualOperationTree = GetOperationTreeForTest(Of TSyntaxNode)(compilation, fileName, which)
+        OperationTreeVerifier.Verify(expectedOperationTree, actualOperationTree)
+    End Sub
+
+    Friend Sub VerifyOperationTreeForTest(Of TSyntaxNode As SyntaxNode)(testSrc As String, expectedOperationTree As String, Optional parseOptions As VisualBasicParseOptions = Nothing, Optional which As Integer = 0)
+        Dim actualOperationTree = GetOperationTreeForTest(Of TSyntaxNode)(testSrc, parseOptions, which)
+        OperationTreeVerifier.Verify(expectedOperationTree, actualOperationTree)
+    End Sub
 End Class

src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests.vb

@@ -8,7 +8,7 @@ Imports Roslyn.Test.Utilities
 Namespace Microsoft.CodeAnalysis.VisualBasic.UnitTests.Semantics
 
     Partial Public Class IOperationTests
-        Inherits BasicTestBase
+        Inherits SemanticModelTestBase
 
         <Fact>
         Public Sub InvalidUserDefinedOperators()

src/Compilers/VisualBasic/Test/Semantic/IOperation/IOperationTests_ISymbolInitializer.vb

@@ -8,7 +8,7 @@ Imports Roslyn.Test.Utilities
 Namespace Microsoft.CodeAnalysis.VisualBasic.UnitTests.Semantics
 
     Partial Public Class IOperationTests
-        Inherits BasicTestBase
+        Inherits SemanticModelTestBase
 
         <Fact, WorkItem(17595, "https://github.com/dotnet/roslyn/issues/17595")>
         Public Sub NoInitializers()

src/Test/Utilities/Portable/Compilation/CompilationExtensions.cs

@@ -159,7 +159,7 @@ internal static void VerifyOperationTree(this Compilation compilation, SyntaxNod
             var actualTextBuilder = new StringBuilder();
             SemanticModel model = compilation.GetSemanticModel(node.SyntaxTree);
             AppendOperationTree(model, node, actualTextBuilder);
-            VerifyOperationTree(expectedOperationTree, actualTextBuilder.ToString());
+            OperationTreeVerifier.Verify(expectedOperationTree, actualTextBuilder.ToString());
         }
 
         internal static void VerifyOperationTree(this Compilation compilation, string expectedOperationTree, bool skipImplicitlyDeclaredSymbols = false)
@@ -218,7 +218,7 @@ internal static void VerifyOperationTree(this Compilation compilation, string sy
                 actualTextBuilder.Append(Environment.NewLine);
             }
 
-            VerifyOperationTree(expectedOperationTree, actualTextBuilder.ToString());
+            OperationTreeVerifier.Verify(expectedOperationTree, actualTextBuilder.ToString());
         }
 
         private static void AppendOperationTree(SemanticModel model, SyntaxNode node, StringBuilder actualTextBuilder, int initialIndent = 0)
@@ -235,15 +235,6 @@ private static void AppendOperationTree(SemanticModel model, SyntaxNode node, St
             }
         }
 
-        private static void VerifyOperationTree(string expectedOperationTree, string actualOperationTree)
-        {
-            char[] newLineChars = Environment.NewLine.ToCharArray();
-            string actual = actualOperationTree.Trim(newLineChars);
-            expectedOperationTree = expectedOperationTree.Trim(newLineChars);
-            expectedOperationTree = Regex.Replace(expectedOperationTree, "([^\r])\n", "$1" + Environment.NewLine);
-            AssertEx.AreEqual(expectedOperationTree, actual);
-        }
-
         internal static bool CanHaveExecutableCodeBlock(ISymbol symbol)
         {
             switch (symbol.Kind)

src/Test/Utilities/Portable/Compilation/OperationTreeVerifier.cs

@@ -5,8 +5,10 @@
 using System.Collections.Immutable;
 using System.Diagnostics;
 using System.Text;
+using System.Text.RegularExpressions;
 using Microsoft.CodeAnalysis.Semantics;
 using Microsoft.CodeAnalysis.Test.Extensions;
+using Roslyn.Test.Utilities;
 using Xunit;
 
 namespace Microsoft.CodeAnalysis.Test.Utilities
@@ -42,6 +44,15 @@ public static string GetOperationTree(IOperation operation, int initialIndent =
             return walker._builder.ToString();
         }
 
+        public static void Verify(string expectedOperationTree, string actualOperationTree)
+        {
+            char[] newLineChars = Environment.NewLine.ToCharArray();
+            string actual = actualOperationTree.Trim(newLineChars);
+            expectedOperationTree = expectedOperationTree.Trim(newLineChars);
+            expectedOperationTree = Regex.Replace(expectedOperationTree, "([^\r])\n", "$1" + Environment.NewLine);
+            AssertEx.AreEqual(expectedOperationTree, actual);
+        }
+
         #region Logging helpers
 
         private void LogCommonPropertiesAndNewLine(IOperation operation)

src/Test/Utilities/Portable/Extensions/SemanticModelExtensions.cs

+// Copyright (c) Microsoft.  All Rights Reserved.  Licensed under the Apache License, Version 2.0.  See License.txt in the project root for license information.
+
+namespace Microsoft.CodeAnalysis.Test.Extensions
+{
+    public static class SemanticModelExtensions
+    {
+        public static IOperation GetOperationInternal(this SemanticModel model, SyntaxNode node)
+        {
+            return model.GetOperationInternal(node);
+        }
+    }
+}

src/Test/Utilities/Portable/TestUtilities.csproj

@@ -129,6 +129,7 @@
     <Compile Include="Diagnostics\TrackingDiagnosticAnalyzer.cs" />
     <Compile Include="ExceptionHelper.cs" />
     <Compile Include="CompilerTraitAttribute.cs" />
+    <Compile Include="Extensions\SemanticModelExtensions.cs" />
     <Compile Include="Extensions\SymbolExtensions.cs" />
     <Compile Include="FX\ConsoleOutput.cs" />
     <Compile Include="FX\CultureHelpers.cs" />