[Bug] SafeMessageHandlers/ClusterManagerWorkflowTests - periodically failing last assertion

[rross]

What are you really trying to do?

Run all the tests for the .NET Samples without having any tests failing

Describe the bug

The SafeMessageHandlers/ClusterManagerWorkflowTests test is periodically failing even when no changes are made to either the test or the code being tested. I've seen this on my laptop as well as in build-lint-test running in Github. Example Integration.

TemporalioSamples.Tests.SafeMessageHandlers.ClusterManagerWorkflowTests.StartWorkflowAsync_SimpleJobSet_Succeeds(testContinueAsNew: True) [1 s]
  Error Message:
   Assert.Equal() Failure
Expected: True
Actual:   False
  Stack Trace:
     at TemporalioSamples.Tests.SafeMessageHandlers.ClusterManagerWorkflowTests.<>c__DisplayClass1_0.<<StartWorkflowAsync_SimpleJobSet_Succeeds>b__0>d.MoveNext() in /_/tests/SafeMessageHandlers/ClusterManagerWorkflowTests.cs:line 62
--- End of stack trace from previous location ---
   at Temporalio.Worker.TemporalWorker.ExecuteInternalAsync(Func`1 untilComplete, CancellationToken stoppingToken)
   at Temporalio.Worker.TemporalWorker.ExecuteInternalAsync(Func`1 untilComplete, CancellationToken stoppingToken)
   at TemporalioSamples.Tests.SafeMessageHandlers.ClusterManagerWorkflowTests.StartWorkflowAsync_SimpleJobSet_Succeeds(Boolean testContinueAsNew) in /_/tests/SafeMessageHandlers/ClusterManagerWorkflowTests.cs:line 27

Minimal Reproduction

dotnet clean
dotnet build
dotnet test

May have to run this several times to see it break.

Environment/Versions

• OS and processor: M2 Max Mac, and Ubuntu
• Temporal Version: CLI: 1.0.0 (Server 1.24.2, UI 2.28.0).
• Are you using Docker or Kubernetes or building Temporal from source? No