chore: run tests in parallel on GitHub Actions#10653
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SimenB merged 4 commits intojestjs:masterfrom Oct 20, 2020
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Seems to work great. Comparing to #10650
While this is
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Another advantage is that we actually run tests in parallel on CI, we have had bugs in the past just affecting parallel runs |
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Summary
Faster CI is always 👍
From my testing
os.cpus()is accurate on GH actions: https://github.com/SimenB/available-cpuJest's default implementation is to leave one core alone, though, which is why I specify it: https://github.com/facebook/jest/blob/30e802036291f4c9c9fd4feef6faba485df54dd2/packages/jest-config/src/getMaxWorkers.ts#L28
If this works out, we should document it. We could also consider not doing
- 1ifis-cireturnstrue.Test plan
Looking at runtime on CI.