Add tests.

src/EditorFeatures/CSharpTest/CSharpEditorServicesTest.csproj

@@ -93,8 +93,10 @@
     <AssemblyName>Roslyn.Services.Editor.CSharp.UnitTests</AssemblyName>
     <RoslynProjectType>UnitTest</RoslynProjectType>
   </PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' "></PropertyGroup>
-  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' "></PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="PresentationCore" />
@@ -279,6 +281,7 @@
     <Compile Include="Formatting\Indentation\SmartTokenFormatterFormatTokenTests.cs" />
     <Compile Include="InlineDeclaration\CSharpInlineDeclarationTests_FixAllTests.cs" />
     <Compile Include="InlineDeclaration\CSharpInlineDeclarationTests.cs" />
+    <Compile Include="Structure\InitializerExpressionStructureTests.cs" />
     <Compile Include="UseCollectionInitializer\UseCollectionInitializerTests.cs" />
     <Compile Include="UseCoalesceExpression\UseCoalesceExpressionForNullableTests.cs" />
     <Compile Include="UseCoalesceExpression\UseCoalesceExpressionTests.cs" />

src/EditorFeatures/CSharpTest/Structure/InitializerExpressionStructureTests.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.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.CodeAnalysis.CSharp.Structure;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Microsoft.CodeAnalysis.Structure;
+using Roslyn.Test.Utilities;
+using Xunit;
+
+namespace Microsoft.CodeAnalysis.Editor.CSharp.UnitTests.Structure
+{
+    public class InitializerExpressionStructureTests : AbstractCSharpSyntaxNodeStructureTests<InitializerExpressionSyntax>
+    {
+        internal override AbstractSyntaxStructureProvider CreateProvider()
+            => new InitializerExpressionStructureProvider();
+
+        [Fact, Trait(Traits.Feature, Traits.Features.Outlining)]
+        public async Task TestOuterInitializer()
+        {
+            await VerifyBlockSpansAsync(
+@"
+class C
+{
+    void M()
+    {
+        var v = {|hint:new Dictionary<int, int>{|textspan: $${
+            { 1, 2 },
+            { 1, 2 },
+        }|}|};
+    }
+}
+",
+                Region("textspan", "hint", CSharpStructureHelpers.Ellipsis, autoCollapse: false));
+        }
+
+        [Fact, Trait(Traits.Feature, Traits.Features.Outlining)]
+        public async Task TestInnerInitializer()
+        {
+            await VerifyBlockSpansAsync(
+@"
+class C
+{
+    void M()
+    {
+        var v = new Dictionary<int, int>{
+            {|hint:{|textspan:$${
+                1, 2
+            },|}|}
+            { 1, 2 },
+        };
+    }
+}
+",
+                Region("textspan", "hint", CSharpStructureHelpers.Ellipsis, autoCollapse: false));
+        }
+    }
+}