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MultiforaDB/tests/spec/fetch.sh
Aleksey Shakhmatov 90de7820da tests/spec: MongoDB spec-test runner and the M0 scorecard
PLAN D2 makes the official specification suites the gate for command semantics;
D7.6 asks for the harness to exist at M0 with a recorded baseline. This is that
harness, pinned on both sides -- mongodb/specifications @ 615e0f9 and
mongodb@7.5.0 -- because a scorecard is only comparable across milestones if a
delta cannot be an upstream test change.

It implements the unified format's Evaluating Matches algorithm as written,
including the two rules that decide whether a pass is earned: extra keys are
tolerated only in a root document, and numeric types compare flexibly. Anything
unimplemented is a SKIP with a reason, never a pass, and the one assertion class
not yet checked -- expectEvents, i.e. command monitoring -- is disclosed at the
top of the scorecard so `pass` reads as an upper bound.

First honest run: 131 pass, 161 fail, 195 skip over 175 files, zero timeouts.

Getting there took four attempts, and the failures are documented in the README
because each would have shipped a scorecard claiming a compatibility gap that
did not exist. Two were genuine leaks in this runner (clients left open when a
case timed out; clients registered for cleanup only after `await connect()`,
plus abandoned cases still creating more). The third I misdiagnosed as machine
load. The fourth attempt found the real cause: a leaked catalog lock in the
engine, fixed separately, which alone accounts for the jump from 45 passes to
131.

So the runner carries its own guards: per-operation CSOT timeouts so work is
never abandoned, an active-handle census per file, an end-of-run tripwire for
stray timers, a hard stop if the server dies rather than emitting hundreds of
misleading ECONNREFUSED failures, and --skip/--limit for bisecting a run whose
failures depend on position. The README states the rule plainly -- a long
unbroken tail of timeouts is a harness bug until proven otherwise -- and the two
commands that settle it.

Also fixes bench-run.sh, which copied its report over bench-latest.txt
unconditionally, including after a run that only warned -- so a degraded run
could silently replace the baseline that PLAN D7.5 makes a milestone gate.
2026-08-03 18:58:01 +03:00

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