modelcontextprotocol/csharp-sdk
Watch
1
0
Fork
You've already forked csharp-sdk
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions 1

Add DeferChangedEvents() to McpServerPrimitiveCollection for batched change notifications (#1689)

Browse source 
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: jeffhandley <1031940+jeffhandley@users.noreply.github.com>
Co-authored-by: Jeff Handley <jeffhandley@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
This commit is contained in:
Copilot 2026-07-07 15:15:45 -04:00 • committed by GitHub
commit 84eb6942eb
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
1 changed files with 814 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

44
tests/ModelContextProtocol.Tests/Configuration/McpServerBuilderExtensionsPromptsTests.cs
View file

@ -173,6 +173,50 @@ public partial class McpServerBuilderExtensionsPromptsTests : ClientServerTestBa
Assert.DoesNotContain(prompts, t => t.Name == "NewPrompt");
}
[Fact]
public async Task DeferChangedEvents_BatchAddPrompts_EmitsExactlyOneNotification()
{
// Under the 2026-07-28 protocol, list-changed notifications are delivered only over a
// subscriptions/listen stream. Pin the legacy revision to test the session-wide broadcast.
await using McpClient client = await CreateMcpClientForServer(new McpClientOptions
{
ProtocolVersion = McpHttpHeaders.November2025ProtocolVersion,
});
var serverOptions = ServiceProvider.GetRequiredService<IOptions<McpServerOptions>>().Value;
var serverPrompts = serverOptions.PromptCollection;
Assert.NotNull(serverPrompts);
int notificationCount = 0;
var firstNotification = new TaskCompletionSource<bool>(TaskCreationOptions.RunContinuationsAsynchronously);
await using (client.RegisterNotificationHandler(NotificationMethods.PromptListChangedNotification, (notification, cancellationToken) =>
{
if (Interlocked.Increment(ref notificationCount) == 1)
{
firstNotification.TrySetResult(true);
}
return default;
}))
{
using (serverPrompts.DeferChangedEvents())
{
serverPrompts.Add(McpServerPrompt.Create([McpServerPrompt(Name = "BatchPrompt1")] () => "1"));
serverPrompts.Add(McpServerPrompt.Create([McpServerPrompt(Name = "BatchPrompt2")] () => "2"));
serverPrompts.Add(McpServerPrompt.Create([McpServerPrompt(Name = "BatchPrompt3")] () => "3"));
}
await firstNotification.Task.WaitAsync(TestContext.Current.CancellationToken);
// Do a round-trip so that any second (erroneous) notification has time to arrive.
var prompts = await client.ListPromptsAsync(cancellationToken: TestContext.Current.CancellationToken);
Assert.Contains(prompts, t => t.Name == "BatchPrompt1");
Assert.Contains(prompts, t => t.Name == "BatchPrompt2");
Assert.Contains(prompts, t => t.Name == "BatchPrompt3");
Assert.Equal(1, notificationCount);
}
}
[Fact]
public async Task AttributeProperties_Propagated()
{