Add a specific WorkspaceKind for test workspaces.

src/EditorFeatures/TestUtilities/Structure/AbstractSyntaxStructureProviderTests.cs

@@ -17,7 +17,7 @@ public abstract class AbstractSyntaxStructureProviderTests
     {
         protected abstract string LanguageName { get; }
 
-        protected virtual string WorkspaceKind => TestWorkspace.WorkspaceName;
+        protected virtual string WorkspaceKind => CodeAnalysis.WorkspaceKind.Test;
 
         private Task<ImmutableArray<BlockSpan>> GetBlockSpansAsync(Document document, int position)
         {

src/EditorFeatures/TestUtilities/Workspaces/TestAddMetadataReferenceCodeActionOperationFactoryWorkspaceService.cs

@@ -14,7 +14,7 @@
 
 namespace Microsoft.CodeAnalysis.Editor.UnitTests.Workspaces
 {
-    [ExportWorkspaceService(typeof(IAddMetadataReferenceCodeActionOperationFactoryWorkspaceService), TestWorkspace.WorkspaceName), Shared]
+    [ExportWorkspaceService(typeof(IAddMetadataReferenceCodeActionOperationFactoryWorkspaceService), WorkspaceKind.Test), Shared]
     public class TestAddMetadataReferenceCodeActionOperationFactoryWorkspaceService : IAddMetadataReferenceCodeActionOperationFactoryWorkspaceService
     {
         public CodeActionOperation CreateAddMetadataReferenceOperation(ProjectId projectId, AssemblyIdentity assemblyIdentity)

src/EditorFeatures/TestUtilities/Workspaces/TestFormattingRuleFactoryServiceFactory.cs

@@ -10,7 +10,7 @@
 
 namespace Microsoft.CodeAnalysis.Editor.UnitTests.Workspaces
 {
-    [ExportWorkspaceServiceFactory(typeof(IHostDependentFormattingRuleFactoryService), TestWorkspace.WorkspaceName), Shared]
+    [ExportWorkspaceServiceFactory(typeof(IHostDependentFormattingRuleFactoryService), WorkspaceKind.Test), Shared]
     internal sealed class TestFormattingRuleFactoryServiceFactory : IWorkspaceServiceFactory
     {
         public TestFormattingRuleFactoryServiceFactory()

src/EditorFeatures/TestUtilities/Workspaces/TestSymbolRenamedCodeActionOperationFactoryWorkspaceService.cs

@@ -7,7 +7,7 @@
 
 namespace Microsoft.CodeAnalysis.Editor.UnitTests.Workspaces
 {
-    [ExportWorkspaceService(typeof(ISymbolRenamedCodeActionOperationFactoryWorkspaceService), TestWorkspace.WorkspaceName), Shared]
+    [ExportWorkspaceService(typeof(ISymbolRenamedCodeActionOperationFactoryWorkspaceService), WorkspaceKind.Test), Shared]
     public class TestSymbolRenamedCodeActionOperationFactoryWorkspaceService : ISymbolRenamedCodeActionOperationFactoryWorkspaceService
     {
         public CodeActionOperation CreateSymbolRenamedOperation(ISymbol symbol, string newName, Solution startingSolution, Solution updatedSolution)

src/EditorFeatures/TestUtilities/Workspaces/TestWorkspace.cs

@@ -25,8 +25,6 @@ namespace Microsoft.CodeAnalysis.Editor.UnitTests.Workspaces
 {
     public partial class TestWorkspace : Workspace
     {
-        public const string WorkspaceName = TestWorkspaceName.Name;
-
         public ExportProvider ExportProvider { get; }
 
         public bool CanApplyChangeDocument { get; set; }
@@ -42,12 +40,12 @@ public partial class TestWorkspace : Workspace
         private readonly BackgroundParser _backgroundParser;
 
         public TestWorkspace()
-            : this(TestExportProvider.ExportProviderWithCSharpAndVisualBasic, WorkspaceName)
+            : this(TestExportProvider.ExportProviderWithCSharpAndVisualBasic, WorkspaceKind.Test)
         {
         }
 
         public TestWorkspace(ExportProvider exportProvider, string workspaceKind = null, bool disablePartialSolutions = true)
-            : base(MefV1HostServices.Create(exportProvider.AsExportProvider()), workspaceKind ?? WorkspaceName)
+            : base(MefV1HostServices.Create(exportProvider.AsExportProvider()), workspaceKind ?? WorkspaceKind.Test)
         {
             ResetThreadAffinity();
 

src/Features/Core/Portable/AddImport/AbstractAddImportCodeFixProvider.cs

@@ -154,7 +154,7 @@ private async Task<int> HandleDiagnosticAsync(CodeFixContext context, Diagnostic
         private static bool IsHostOrTestWorkspace(Project project)
         {
             return project.Solution.Workspace.Kind == WorkspaceKind.Host ||
-                   project.Solution.Workspace.Kind == "Test";
+                   project.Solution.Workspace.Kind == WorkspaceKind.Test;
         }
 
         private async Task<ImmutableArray<Reference>> FindResultsAsync(

src/Features/Core/Portable/IncrementalCaches/SymbolTreeInfoIncrementalAnalyzerProvider.cs

@@ -187,7 +187,7 @@ private async Task UpdateSymbolTreeInfoAsync(Project project, CancellationToken
                     return;
                 }
 
-                if (project.Solution.Workspace.Kind != "Test" &&
+                if (project.Solution.Workspace.Kind != WorkspaceKind.Test &&
                     project.Solution.Workspace.Kind != WorkspaceKind.RemoteWorkspace &&
                     project.Solution.Workspace.Options.GetOption(NavigateToOptions.OutOfProcessAllowed))
                 {

src/Workspaces/Core/Portable/Workspace/WorkspaceKind.cs

@@ -15,6 +15,7 @@ public static class WorkspaceKind
         public const string MiscellaneousFiles = nameof(MiscellaneousFiles);
         public const string Preview = nameof(Preview);
 
+        internal const string Test = nameof(Test);
         internal const string AnyCodeRoslynWorkspace = nameof(AnyCodeRoslynWorkspace);
         internal const string RemoteWorkspace = nameof(RemoteWorkspace);
         internal const string RemoteTemporaryWorkspace = nameof(RemoteTemporaryWorkspace);