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test(mesh): stampede callers on dedicated threads — arrival gate must not depend on thread-pool injection

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Joseph Doherty
2026-08-06 04:23:51 -04:00
parent 24e55d3395
commit a463141028
1 changed files with 5 additions and 2 deletions
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tests/Server/ZB.MOM.WW.OtOpcUa.ControlPlane.Tests/Communication/MeshPskProviderTests.cs
+5 -2
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@@ -296,13 +296,16 @@ public sealed class MeshPskProviderTests
var resolver = new FakeSecretResolver { Value = "stored-psk", ResolveDelay = TimeSpan.FromMilliseconds(50) }; var resolver = new FakeSecretResolver { Value = "stored-psk", ResolveDelay = TimeSpan.FromMilliseconds(50) };
var provider = CreateProvider(resolver); var provider = CreateProvider(resolver);
var callers = Enumerable.Range(0, Callers).Select(_ => Task.Run(() => // LongRunning gives each caller a dedicated thread: reaching the arrival gate must not
// depend on thread-pool injection, which is rate-limited and made this flake on a
// contended box (the gate timed out before all 16 pool threads existed).
var callers = Enumerable.Range(0, Callers).Select(_ => Task.Factory.StartNew(() =>
{ {
arrived.Signal(); arrived.Signal();
start.Wait(); start.Wait();
provider.TryGetPsk("SITE-A", out var psk).ShouldBeTrue(); provider.TryGetPsk("SITE-A", out var psk).ShouldBeTrue();
return psk; return psk;
})).ToArray(); }, CancellationToken.None, TaskCreationOptions.LongRunning, TaskScheduler.Default)).ToArray();
arrived.Wait(TimeSpan.FromSeconds(10)).ShouldBeTrue("all callers should reach the start gate"); arrived.Wait(TimeSpan.FromSeconds(10)).ShouldBeTrue("all callers should reach the start gate");
start.Set(); start.Set();