test: cancel background task

[vbreuss]

Adjusts async verification tests to properly track and shut down background producer tasks, preventing lingering work after assertions complete.

Changes:

• Capture the Task.Run(...) task instead of discarding it.
• Cancel the CancellationTokenSource and await the background task to ensure it completes.

[Copilot]

Pull request overview

Adjusts async verification tests to properly track and shut down background producer tasks, preventing lingering work after assertions complete.

Changes:

• Capture the Task.Run(...) task instead of discarding it.
• Cancel the CancellationTokenSource and await the background task to ensure it completes.

Comments suppressed due to low confidence (2)

Tests/Mockolate.Tests/Verify/VerificationResultTests.AsyncTests.cs:69

• Cancellation/await of the background Task only happens after the assertion succeeds. If VerifyAsync/That throws, the loop keeps running and can leak work into other tests (and potentially prolong the test run). Consider wrapping the verification in try/finally so you always cancel the CTS and await the task.

			await That(((IAsyncVerificationResult)result).VerifyAsync(l => l.Length > 20)).IsTrue();
			cts.Cancel();
			await backgroundTask;

Tests/Mockolate.Tests/Verify/VerificationResultTests.AsyncTests.cs:165

• Cancellation/await of the background Task happens after the verification call. If AtLeastOnce throws, the task will keep running (up to ~10s) and can bleed activity into subsequent tests. Consider using try/finally to always cancel and await the task even when the verification fails.

			Stopwatch sw = Stopwatch.StartNew();
			sut.VerifyMock.Invoked.Dispense(Match.AnyParameters()).Within(TimeSpan.FromMilliseconds(500))
				.AtLeastOnce();
			sw.Stop();
			cts.Cancel();
			await backgroundTask;

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

🚀 Benchmark Results

Details

BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.3 LTS (Noble Numbat)

AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores

.NET SDK 10.0.103

[Host] : .NET 10.0.3 (10.0.3, 10.0.326.7603), X64 RyuJIT x86-64-v3
Job=InProcess  Toolchain=InProcessEmitToolchain  IterationCount=15

LaunchCount=1  WarmupCount=10

Method	Mean	Error	StdDev	Gen0	Gen1	Allocated
Simple_Mockolate	1.561 μs	0.0137 μs	0.0128 μs	0.2460	-	4.02 KB
Simple_Moq	175.325 μs	1.5382 μs	1.3636 μs	0.4883	-	14.55 KB
Simple_NSubstitute	5.749 μs	0.0302 μs	0.0268 μs	0.5569	0.0076	9.14 KB
Simple_FakeItEasy	6.572 μs	0.0396 μs	0.0351 μs	0.4959	-	8.11 KB

[github-actions]

This is addressed in release v1.5.0.