Use Newtonsoft for client side serialization in Document Outline as we

have not switched to STJ on the client side

eng/Directory.Packages.props

@@ -56,7 +56,7 @@
       Visual Studio
     -->
     <PackageVersion Include="Microsoft.VisualStudio.SDK" Version="17.10.234-preview.1" />
-    <PackageVersion Include="Microsoft.Internal.VisualStudio.Shell.Framework" Version="17.9.35796-preview.1" />
+    <PackageVersion Include="Microsoft.Internal.VisualStudio.Shell.Framework" Version="17.9.36524" />
     <PackageVersion Include="Microsoft.ServiceHub.Client" Version="4.2.1017" />
     <PackageVersion Include="Microsoft.VisualStudio.Extensibility" Version="$(MicrosoftVisualStudioExtensibilityVersion)" />
     <PackageVersion Include="Microsoft.VisualStudio.Extensibility.Sdk" Version="$(MicrosoftVisualStudioExtensibilityVersion)" />
@@ -99,7 +99,7 @@
     <PackageVersion Include="Microsoft.VisualStudio.Language" Version="$(MicrosoftVisualStudioCoreVersion)" />
     <PackageVersion Include="Microsoft.VisualStudio.Language.NavigateTo.Interfaces" Version="$(MicrosoftVisualStudioCoreVersion)" />
     <PackageVersion Include="Microsoft.VisualStudio.Language.StandardClassification" Version="$(MicrosoftVisualStudioCoreVersion)" />
-    <PackageVersion Include="Microsoft.VisualStudio.LanguageServer.Client" Version="17.10.11-preview" />
+    <PackageVersion Include="Microsoft.VisualStudio.LanguageServer.Client" Version="17.10.72-preview" />
     <PackageVersion Include="Microsoft.VisualStudio.RemoteControl" Version="16.3.52" />
     <PackageVersion Include="Microsoft.VisualStudio.RpcContracts" Version="17.10.3-preview" />
     <PackageVersion Include="Microsoft.VisualStudio.Shell.15.0" Version="17.10.234-preview.1" />
@@ -138,7 +138,7 @@
     <!--
       Language Server
     -->
-    <PackageVersion Include="Microsoft.VisualStudio.LanguageServer.Client.Implementation" Version="17.9.25-preview" />
+    <PackageVersion Include="Microsoft.VisualStudio.LanguageServer.Client.Implementation" Version="17.10.72-preview" />
     <PackageVersion Include="NuGet.ProjectModel" Version="6.8.0-rc.112" />
     <PackageVersion Include="Microsoft.TestPlatform.TranslationLayer" Version="$(MicrosoftTestPlatformVersion)" />
     <PackageVersion Include="Microsoft.TestPlatform.ObjectModel" Version="$(MicrosoftTestPlatformVersion)" />

src/EditorFeatures/TestUtilities/LanguageServer/AbstractLanguageServerProtocolTests.InitializationOptions.cs

@@ -7,6 +7,7 @@
 using Microsoft.CodeAnalysis.Diagnostics;
 using Microsoft.CodeAnalysis.LanguageServer;
 using Microsoft.CodeAnalysis.Options;
+using StreamJsonRpc;
 using LSP = Roslyn.LanguageServer.Protocol;
 
 namespace Roslyn.Test.Utilities
@@ -22,10 +23,12 @@ public abstract partial class AbstractLanguageServerProtocolTests
             internal LSP.ClientCapabilities ClientCapabilities { get; init; } = new LSP.ClientCapabilities();
             internal WellKnownLspServerKinds ServerKind { get; init; } = WellKnownLspServerKinds.AlwaysActiveVSLspServer;
             internal Action<IGlobalOptionService>? OptionUpdater { get; init; } = null;
+            internal bool CallInitialize { get; init; } = true;
             internal bool CallInitialized { get; init; } = true;
             internal object? ClientTarget { get; init; } = null;
             internal string? Locale { get; init; } = null;
             internal IEnumerable<DiagnosticAnalyzer>? AdditionalAnalyzers { get; init; } = null;
+            internal IJsonRpcMessageFormatter? ClientMessageFormatter { get; init; } = null;
         }
     }
 }

src/EditorFeatures/TestUtilities/LanguageServer/AbstractLanguageServerProtocolTests.cs

@@ -531,7 +531,8 @@ internal sealed class TestLspServer : IAsyncDisposable
                 LSP.ClientCapabilities clientCapabilities,
                 RoslynLanguageServer target,
                 Stream clientStream,
-                object? clientTarget = null)
+                object? clientTarget = null,
+                IJsonRpcMessageFormatter? clientMessageFormatter = null)
             {
                 TestWorkspace = testWorkspace;
                 ClientCapabilities = clientCapabilities;
@@ -540,7 +541,9 @@ internal sealed class TestLspServer : IAsyncDisposable
 
                 LanguageServer = target;
 
-                _clientRpc = new JsonRpc(new HeaderDelimitedMessageHandler(clientStream, clientStream, RoslynLanguageServer.CreateJsonMessageFormatter()), clientTarget)
+                clientMessageFormatter ??= RoslynLanguageServer.CreateJsonMessageFormatter();
+
+                _clientRpc = new JsonRpc(new HeaderDelimitedMessageHandler(clientStream, clientStream, clientMessageFormatter), clientTarget)
                 {
                     ExceptionStrategy = ExceptionProcessing.ISerializable,
                 };
@@ -566,13 +569,16 @@ internal static async Task<TestLspServer> CreateAsync(EditorTestWorkspace testWo
                 var (clientStream, serverStream) = FullDuplexStream.CreatePair();
                 var languageServer = CreateLanguageServer(serverStream, serverStream, testWorkspace, initializationOptions.ServerKind, logger);
 
-                var server = new TestLspServer(testWorkspace, locations, initializationOptions.ClientCapabilities, languageServer, clientStream, initializationOptions.ClientTarget);
+                var server = new TestLspServer(testWorkspace, locations, initializationOptions.ClientCapabilities, languageServer, clientStream, initializationOptions.ClientTarget, initializationOptions.ClientMessageFormatter);
 
-                await server.ExecuteRequestAsync<LSP.InitializeParams, LSP.InitializeResult>(LSP.Methods.InitializeName, new LSP.InitializeParams
+                if (initializationOptions.CallInitialize)
                 {
-                    Capabilities = initializationOptions.ClientCapabilities,
-                    Locale = initializationOptions.Locale,
-                }, CancellationToken.None);
+                    await server.ExecuteRequestAsync<LSP.InitializeParams, LSP.InitializeResult>(LSP.Methods.InitializeName, new LSP.InitializeParams
+                    {
+                        Capabilities = initializationOptions.ClientCapabilities,
+                        Locale = initializationOptions.Locale,
+                    }, CancellationToken.None);
+                }
 
                 if (initializationOptions.CallInitialized)
                 {

src/Features/LanguageServer/Protocol/Handler/Symbols/RoslynDocumentSymbolParams.cs

@@ -2,8 +2,8 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
+using System.Text.Json.Serialization;
 using Roslyn.LanguageServer.Protocol;
-using Newtonsoft.Json;
 
 namespace Microsoft.CodeAnalysis.LanguageServer.Handler
 {
@@ -18,7 +18,8 @@ namespace Microsoft.CodeAnalysis.LanguageServer.Handler
     /// </remarks>
     internal class RoslynDocumentSymbolParams : DocumentSymbolParams
     {
-        [JsonProperty(PropertyName = "useHierarchicalSymbols", DefaultValueHandling = DefaultValueHandling.Ignore)]
+        [JsonPropertyName("useHierarchicalSymbols")]
+        [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingDefault)]
         public bool UseHierarchicalSymbols { get; set; }
     }
 }

src/VisualStudio/CSharp/Test/DocumentOutline/DocumentOutlineTestsBase.cs

@@ -2,18 +2,15 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 // See the LICENSE file in the project root for more information.
 
-using System;
-using System.Collections.Generic;
 using System.Linq;
+using System.Runtime.Serialization;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.Diagnostics;
 using Microsoft.CodeAnalysis.Editor.Shared.Utilities;
 using Microsoft.CodeAnalysis.Editor.Test;
 using Microsoft.CodeAnalysis.Editor.UnitTests;
-using Microsoft.CodeAnalysis.Editor.UnitTests.Workspaces;
-using Microsoft.CodeAnalysis.LanguageServer.Handler;
 using Microsoft.CodeAnalysis.LanguageServer.UnitTests;
 using Microsoft.CodeAnalysis.Shared.Extensions;
 using Microsoft.CodeAnalysis.Shared.TestHooks;
@@ -22,9 +19,7 @@
 using Microsoft.VisualStudio.LanguageServer.Client;
 using Microsoft.VisualStudio.LanguageServices.DocumentOutline;
 using Microsoft.VisualStudio.Text;
-using Microsoft.VisualStudio.Threading;
-using Moq;
-using Newtonsoft.Json.Linq;
+using StreamJsonRpc;
 using Xunit.Abstractions;
 using static Roslyn.Test.Utilities.AbstractLanguageServerProtocolTests;
 using IAsyncDisposable = System.IAsyncDisposable;
@@ -49,7 +44,7 @@ protected class DocumentOutlineTestMocks : IAsyncDisposable
             private readonly IAsyncDisposable _disposable;
 
             internal DocumentOutlineTestMocks(
-                LanguageServiceBrokerCallback languageServiceBrokerCallback,
+                LanguageServiceBrokerCallback<DocumentSymbolNewtonsoft.NewtonsoftRoslynDocumentSymbolParams, DocumentSymbolNewtonsoft.NewtonsoftRoslynDocumentSymbol[]> languageServiceBrokerCallback,
                 IThreadingContext threadingContext,
                 EditorTestWorkspace workspace,
                 IAsyncDisposable disposable)
@@ -61,7 +56,7 @@ protected class DocumentOutlineTestMocks : IAsyncDisposable
                 TextBuffer = workspace.Documents.Single().GetTextBuffer();
             }
 
-            internal LanguageServiceBrokerCallback LanguageServiceBrokerCallback { get; }
+            internal LanguageServiceBrokerCallback<DocumentSymbolNewtonsoft.NewtonsoftRoslynDocumentSymbolParams, DocumentSymbolNewtonsoft.NewtonsoftRoslynDocumentSymbol[]> LanguageServiceBrokerCallback { get; }
 
             internal IThreadingContext ThreadingContext { get; }
 
@@ -84,27 +79,26 @@ protected async Task<DocumentOutlineTestMocks> CreateMocksAsync(string code)
             var workspace = EditorTestWorkspace.CreateCSharp(code, composition: s_composition);
             var threadingContext = workspace.GetService<IThreadingContext>();
 
-            var clientCapabilities = new LSP.ClientCapabilities()
+            var testLspServer = await CreateTestLspServerAsync(workspace, new InitializationOptions
             {
-                TextDocument = new LSP.TextDocumentClientCapabilities()
-                {
-                    DocumentSymbol = new LSP.DocumentSymbolSetting()
-                    {
-                        HierarchicalDocumentSymbolSupport = true
-                    }
-                }
-            };
-
-            var testLspServer = await CreateTestLspServerAsync(workspace, new InitializationOptions { ClientCapabilities = clientCapabilities });
+                // Set the message formatter to use newtonsoft on the client side to match real behavior.
+                // Also avoid calling initialize / initialized as the test harness uses types only compatible with STJ.
+                // TODO - switch back to STJ with https://github.com/dotnet/roslyn/issues/73317
+                ClientMessageFormatter = new JsonMessageFormatter(),
+                CallInitialize = false,
+                CallInitialized = false
+            });
 
             var mocks = new DocumentOutlineTestMocks(RequestAsync, threadingContext, workspace, testLspServer);
             return mocks;
 
-            async Task<ManualInvocationResponse?> RequestAsync(ITextBuffer textBuffer, Func<JToken, bool> capabilitiesFilter, string languageServerName, string method, Func<ITextSnapshot, JToken> parameterFactory, CancellationToken cancellationToken)
+            async Task<DocumentSymbolNewtonsoft.NewtonsoftRoslynDocumentSymbol[]?> RequestAsync(Request<DocumentSymbolNewtonsoft.NewtonsoftRoslynDocumentSymbolParams, DocumentSymbolNewtonsoft.NewtonsoftRoslynDocumentSymbol[]> request, CancellationToken cancellationToken)
             {
-                var request = parameterFactory(textBuffer.CurrentSnapshot).ToObject<RoslynDocumentSymbolParams>();
-                var response = await testLspServer.ExecuteRequestAsync<RoslynDocumentSymbolParams, object[]>(method, request!, cancellationToken);
-                return new ManualInvocationResponse(string.Empty, JToken.FromObject(response!));
+                var docRequest = (DocumentRequest<DocumentSymbolNewtonsoft.NewtonsoftRoslynDocumentSymbolParams, DocumentSymbolNewtonsoft.NewtonsoftRoslynDocumentSymbol[]>)request;
+                var parameters = docRequest.ParameterFactory(docRequest.TextBuffer.CurrentSnapshot);
+                var response = await testLspServer.ExecuteRequestAsync<DocumentSymbolNewtonsoft.NewtonsoftRoslynDocumentSymbolParams, DocumentSymbolNewtonsoft.NewtonsoftRoslynDocumentSymbol[]>(request.Method, parameters, cancellationToken);
+
+                return response;
             }
         }
 
@@ -139,7 +133,21 @@ private async Task<TestLspServer> CreateTestLspServerAsync(EditorTestWorkspace w
             var workspaceWaiter = operations.GetWaiter(FeatureAttribute.Workspace);
             await workspaceWaiter.ExpeditedWaitAsync();
 
-            return await TestLspServer.CreateAsync(workspace, initializationOptions, _logger);
+            var server = await TestLspServer.CreateAsync(workspace, initializationOptions, _logger);
+
+            // We disable the default test initialize call because the default test harness intialize types only support STJ (not newtonsoft).
+            // We only care that initialize has been called with some capability, so call with simple objects.
+            // TODO - remove with switch to STJ in https://github.com/dotnet/roslyn/issues/73317
+            await server.ExecuteRequestAsync<object, object>(Roslyn.LanguageServer.Protocol.Methods.InitializeName, new NewtonsoftInitializeParams() { Capabilities = new object() }, CancellationToken.None);
+
+            return server;
+        }
+
+        [DataContract]
+        private class NewtonsoftInitializeParams
+        {
+            [DataMember(Name = "capabilities")]
+            internal object? Capabilities { get; set; }
         }
     }
 }

src/VisualStudio/Core/Def/DocumentOutline/DocumentOutlineViewModel.cs

@@ -15,6 +15,7 @@
 using Microsoft.CodeAnalysis.Editor.Shared.Tagging;
 using Microsoft.CodeAnalysis.Editor.Shared.Utilities;
 using Microsoft.CodeAnalysis.Editor.Tagging;
+using Microsoft.CodeAnalysis.LanguageServer.Handler;
 using Microsoft.CodeAnalysis.PooledObjects;
 using Microsoft.CodeAnalysis.Shared.Collections;
 using Microsoft.CodeAnalysis.Shared.TestHooks;