Use ast.fix_missing_locations in assertion rewrite#7
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Prefer the C-accelerated fix_missing_locations after seeding each rewritten statement from the assert, instead of a pure-Python traverse_node walk. Co-authored-by: Cursor <cursoragent@cursor.com>
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Summary
traverse_nodelocation walk withast.fix_missing_locationsafter seeding each rewritten statement from the assert.Timing (pytest's own
testing/suite)Warm interleaved A/B
pytest testing/ --collect-only -q(8 pairs).mainCollected 4286 tests each run.
Note: this suite is only ~4k tests / ~0.5–1.5s collect, so single micro-optimizations are often within run-to-run noise.
Test plan
testing/test_assertion.pyMade with Cursor