test(model_testing): make harness runs replayable and print the replay command - #10707
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Included review availability: Your plan provides up to 10 included reviews per hour; 8 remain after this review. 📝 WalkthroughWalkthroughThe model testing harness adds the Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Bug fix Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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In `@lib/collection/src/model_testing/mod.rs`:
- Line 1119: Update the seed initialization around resolve_seed to handle
std::env::VarError variants separately: keep the absent-variable path as None,
but panic with a clear SEED_ENV error when the variable is present and not valid
Unicode. Pass the resulting optional string to resolve_seed without changing its
fallback behavior.
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lib/collection/src/model_testing/mod.rs
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…y command Harness failures print their seed, but the seeded tests cannot be re-run with it and the soak binary needs hand-built flags, so a CI failure was effectively one-shot: - Honour MODEL_TESTING_SEED so the seed from a failing run replays the same op sequence in the same test; without it a fresh seed is still drawn. - Print the equivalent model_testing invocation for every run, so any failure (including the Linux-only harness tests on a non-Linux machine) becomes a one-line reproduction. - Bind the harness knobs once in smoke() and feed the same bindings to run() and to the printed command, so a run and its reproduction cannot disagree about them. - Cover both helpers with platform-independent unit tests: the helpers now compile and are tested on every platform, not only inside the Linux-gated harness module. Refs qdrant#10406, qdrant#10467, qdrant#10662.
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Harness failures print their seed, but the seeded tests cannot be re-run with it and the soak binary needs hand-built flags, so a CI failure was effectively one-shot:
MODEL_TESTING_SEEDso the seed from a failing run replays the same op sequence in the same test; without it a fresh seed is still drawn.model_testinginvocation for every run, so any failure (including the Linux-only harness tests on a non-Linux machine) becomes a one-line reproduction.smoke()and feed the same bindings torun()and to the printed command, so a run and its reproduction cannot disagree about them.Motivation: triaging the recent
model_testingflake reports (#10406, #10662, #10667) needs the failing seed to be replayable. Reproduced locally what CI printed:Checks run:
cargo test -p collection --lib seed_support_tests(5 passed),cargo clippy -p collection --all-targets -- -D warnings(clean), and the harness test above.AI disclosure per the contributing guidelines: the code was written with AI assistance; the prompt asked for a way to replay a failing harness seed and to print the equivalent soak-binary command, keeping changes minimal and adding tests. I reviewed and ran the checks above.