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Make Razor a built in feature of the Roslyn language server #83575

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7a6e3c0
Remove local testing skill
davidwengier May 5, 2026
9378ce0
Package the Razor extension with the Roslyn language server package
davidwengier May 5, 2026
14edb00
Remove --razorSourceGenerator option. It wasn't used anyway
davidwengier May 5, 2026
451eb99
Remove razorDesignTimeTargets option
davidwengier May 5, 2026
62288bf
Expand Remote.Razor runtime identifiers
davidwengier May 6, 2026
28e314b
Stop publishing VSCode Razor extension package
davidwengier May 6, 2026
333225e
Strengthen test assertions
davidwengier May 6, 2026
2be36f9
Be case insensitive
davidwengier May 6, 2026
1270ab9
Roslyn tests have no telemetry, but we're part of the MEF composition
davidwengier May 7, 2026
b7972c7
Merge branch 'main' into RazorInRoslynLSP
davidwengier May 7, 2026
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114 changes: 0 additions & 114 deletions .github/skills/run-vscode-local-testing/SKILL.md
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173 changes: 0 additions & 173 deletions .github/skills/run-vscode-local-testing/scripts/Start-LocalVsCode.ps1
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1 change: 0 additions & 1 deletion eng/config/PublishData.json
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Original file line number Diff line number Diff line change
Expand Up @@ -92,7 +92,6 @@
"roslyn-language-server.win-arm64": "vs-impl",
"roslyn-language-server.win-x64": "vs-impl",
"Text.Analyzers": "arcade",
"Microsoft.VisualStudioCode.RazorExtension": "vs-impl",
"Microsoft.AspNetCore.Mvc.Razor.Extensions.Tooling.Internal": "arcade",
"Microsoft.AspNetCore.Razor.Test.Common": "arcade",
"Microsoft.AspNetCore.Razor.Utilities.Shared": "arcade",
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11 changes: 8 additions & 3 deletions ...nguageServer/Microsoft.CodeAnalysis.LanguageServer.UnitTests/LspFileChangeWatcherTests.cs
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Expand Up @@ -68,7 +68,7 @@ public async Task CreatingDirectoryWatchRequestsDirectoryWatch()
// Get rid of the registration and it should be gone again
context.Dispose();
await WaitForFileWatcherAsync(testLspServer);
Assert.Empty(dynamicCapabilitiesRpcTarget.Registrations);
AssertNoFileWatcherRegistration(dynamicCapabilitiesRpcTarget);
}

[Fact]
Expand Down Expand Up @@ -99,21 +99,26 @@ public async Task CreatingFileWatchRequestsFileWatch()

// Get rid of the registration and it should be gone again
watchedFile.Dispose();
context.Dispose();
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@jasonmalinowski jasonmalinowski May 6, 2026

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Disposing this before the assert might be defeating the point this part of the test. Should line 90 just become a using context instead?

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@davidwengier davidwengier May 6, 2026 •
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The missing dispose is something copilot noticed, but I did think the same thing. The test above already has the context.Dispose call, and it is before the wait and assert though, so I assumed it to be correct.

await WaitForFileWatcherAsync(testLspServer);
Assert.Empty(dynamicCapabilitiesRpcTarget.Registrations);
AssertNoFileWatcherRegistration(dynamicCapabilitiesRpcTarget);
}

private static Task WaitForFileWatcherAsync(TestLspServer testLspServer)
=> testLspServer.ExportProvider.GetExportedValue<AsynchronousOperationListenerProvider>().GetWaiter(FeatureAttribute.Workspace).ExpeditedWaitAsync();

private static FileSystemWatcher GetSingleFileWatcher(DynamicCapabilitiesRpcTarget dynamicCapabilities)
{
var registrationJson = Assert.IsType<JsonElement>(Assert.Single(dynamicCapabilities.Registrations).Value.RegisterOptions);
var registrationJson = Assert.IsType<JsonElement>(
Assert.Single(dynamicCapabilities.Registrations.Values, static registration => registration.Method == Methods.WorkspaceDidChangeWatchedFilesName).RegisterOptions);
var registration = JsonSerializer.Deserialize<DidChangeWatchedFilesRegistrationOptions>(registrationJson, ProtocolConversions.LspJsonSerializerOptions)!;

return Assert.Single(registration.Watchers);
}

private static void AssertNoFileWatcherRegistration(DynamicCapabilitiesRpcTarget dynamicCapabilities)
=> Assert.DoesNotContain(dynamicCapabilities.Registrations.Values, static registration => registration.Method == Methods.WorkspaceDidChangeWatchedFilesName);

private sealed class DynamicCapabilitiesRpcTarget
{
public readonly ConcurrentDictionary<string, Registration> Registrations = new();
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1 change: 0 additions & 1 deletion ...icrosoft.CodeAnalysis.LanguageServer.UnitTests/Utilities/LanguageServerTestComposition.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,6 @@ internal sealed class LanguageServerTestComposition
SessionId: null,
ExtensionAssemblyPaths: extensionPaths ?? [],
DevKitDependencyPath: devKitDependencyPath,
RazorDesignTimePath: null,
CSharpDesignTimePath: null,
ExtensionLogDirectory: string.Empty,
ServerPipeName: null,
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7 changes: 3 additions & 4 deletions ...Server/Microsoft.CodeAnalysis.LanguageServer/HostWorkspace/LanguageServerProjectLoader.cs
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Expand Up @@ -22,6 +22,8 @@ namespace Microsoft.CodeAnalysis.LanguageServer.HostWorkspace;

internal abstract class LanguageServerProjectLoader
{
private static readonly string s_razorDesignTimePath = Path.Combine(AppContext.BaseDirectory, "Targets", "Microsoft.NET.Sdk.Razor.DesignTime.targets");

private readonly AsyncBatchingWorkQueue<ProjectToLoad> _projectsToReload;

protected readonly LanguageServerWorkspaceFactory _workspaceFactory;
Expand Down Expand Up @@ -126,10 +128,7 @@ private static ImmutableDictionary<string, string> BuildAdditionalProperties(Ser
return properties;
}

if (serverConfiguration.RazorDesignTimePath is { } razorDesignTimePath)
{
properties = properties.Add("RazorDesignTimeTargets", razorDesignTimePath);
}
properties = properties.Add("RazorDesignTimeTargets", s_razorDesignTimePath);

if (serverConfiguration.CSharpDesignTimePath is { } csharpDesignTimePath)
{
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