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test(delta): snapshot fixtures for the regression matrix#2025

Opennoor-hassanwants to merge 4 commits intomainfromtest/delta-3026
NONoor Hassancommented 4w ago

Summary

test(delta): snapshot fixtures for the regression matrix — addresses the regression surfaced in delta-core after the recent test work landed on main.

Why

  • The previous behavior on main short-circuited the safe path under load; this PR restores the intended contract.
  • Adds a guard so the regression cannot resurface silently in staging.
  • Drive-by: removes dead-code call sites the linter was warning about.

Scope

  • Files touched: 2 across the core module + tests.
  • No public API change; ABI is preserved.
  • CI: all green on the matrix runs.

Labels: documentation

NONoor Hassancommented 2w ago

Rebased against main and force-pushed; CI is happy. Re-requesting review.

AMAmara Oseicommented 2w ago

I think we can drop the legacy double-buffered drain once this lands — happy to do it as a follow-up.

AMAmara Oseicommented 2w ago

LGTM modulo the comment I left on the changelog entry.

AMAmara Oseicommented 2w ago

Smoke-tested under the load profile from last week's incident. No regressions.

AMAmara Oseicommented 2w ago

Nice — pulled this locally and the burn-rate window now lines up with the SLO board. Approving once the snapshot tests catch up.

AMAmara Oseicommented 2w ago

Could we add a regression test for the partial-bucket case? I'm happy to push it on top if you'd prefer.

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