Add --shuffle option to PonyTest#224
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Proposes a --shuffle flag that randomizes test execution order to detect hidden test coupling. Applies to sequential, concurrent, and exclusion group scheduling modes. Uses an optional seed for reproducible orderings.
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This was accepted. I will merge and do the shuffle to get it into the stdlib. |
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Proposes a
--shuffleflag for PonyTest that randomizes test execution order to detect hidden test coupling. Accepts an optional U64 seed for reproducible orderings.Applies to all scheduling modes: sequential (the primary use case for CI environments already using
--sequential), concurrent (randomizes dispatch order), and within exclusion groups.Uses
Time.cycles()for seed generation and the existingRandom.shuffle(Fisher-Yates) for the shuffle itself. Implementation buffers(_TestRunner, _Group)pairs and shuffles before dispatch, requiring no changes to the group implementations.