Disable in-process parallel test execution#54943
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Pull request overview
This PR disables in-process test parallel execution across the repo to reduce CI flakiness driven by concurrency-sensitive tests and shared process/global resources.
Changes:
- Disable xUnit in-process parallelization via
parallelizeAssembly: falseandparallelizeTestCollections: false. - Disable MSTest in-process parallelization by setting
MSTestParallelizeScope=Nonefor MSTest.Sdk-based test projects. - Apply the same xUnit parallelization settings to TemplateEngine’s custom
xunit.runner.json.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| test/xunit.runner.json | Disables xUnit in-process parallel execution for tests using the shared runner config. |
| test/TemplateEngine/Microsoft.TemplateEngine.Orchestrator.RunnableProjects.UnitTests/xunit.runner.json | Disables xUnit in-process parallel execution for this TemplateEngine unit test project. |
| test/Directory.Build.props | Disables MSTest in-process parallelization repo-wide for MSTest.Sdk projects. |
Concurrency-related intermittent test failures are affecting 63% of PRs. Disabling in-process parallel test execution to address this. Closes #54967 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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…ttributes Following #54943 which disabled in-process parallel test execution (MSTestParallelizeScope=None), the remaining [DoNotParallelize] guards are no-ops. Remove them and revert the leftover ClassLevel-era comment edit so the change is a pure attribute cleanup. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Purpose
Disable in-process parallel test execution to address widespread concurrency-related intermittent test failures.
Changes
test/xunit.runner.json: SetparallelizeAssembly: falseandparallelizeTestCollections: falsetest/TemplateEngine/.../xunit.runner.json: Sametest/Directory.Build.props: SetMSTestParallelizeScope=NoneContext
See #54967 for the full analysis and data supporting this change.
Closes #54967