MultiAsFlowTest flaky test in CI

[jponge]

I've observed occasional failures on that particular test for a few days, I'm unsure were it might come from:

[INFO] 
[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[INFO] Running io.smallrye.mutiny.coroutines.DeferredAsUniTest
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 2.007 s - in io.smallrye.mutiny.coroutines.DeferredAsUniTest
[INFO] Running io.smallrye.mutiny.coroutines.UniAwaitSuspendingTest
[INFO] Tests run: 8, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.748 s - in io.smallrye.mutiny.coroutines.UniAwaitSuspendingTest
[INFO] Running io.smallrye.mutiny.coroutines.FlowAsMultiTest
Error:  Tests run: 6, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 10.712 s <<< FAILURE! - in io.smallrye.mutiny.coroutines.FlowAsMultiTest
Error:  io.smallrye.mutiny.coroutines.FlowAsMultiTest.verify that coroutine cancellation result in failure  Time elapsed: 10.424 s  <<< FAILURE!
java.lang.AssertionError: No completion (or failure) event received in the last 10000 ms

[INFO] Running io.smallrye.mutiny.coroutines.MultiAsFlowTest
[INFO] Tests run: 16, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 2.939 s - in io.smallrye.mutiny.coroutines.MultiAsFlowTest
[INFO] 
[INFO] Results:
[INFO] 
Error:  Failures: 
Error:    FlowAsMultiTest.verify that coroutine cancellation result in failure No completion (or failure) event received in the last 10000 ms
[INFO] 
Error:  Tests run: 36, Failures: 1, Errors: 0, Skipped: 0

[jponge]

Note that I'm going to investigate another flakiness in MutinySchedulerTest, so perhaps it's related with executors manipulations happening in Infrastructure across test runs.

[jponge]

An example: https://github.com/smallrye/smallrye-mutiny/actions/runs/1718332559

[jponge]

Seems like it frequently fails on Java 8 https://github.com/smallrye/smallrye-mutiny/runs/4886612061