afa5c6ef9d
`special()` passed a hard `false` for `root` into its recursion, so a value
standing behind `$$unsetOrMatches` was matched as a nested document even when
it sat at the top of an `expectResult`. The spec says the opposite in so many
words -- "This operator does not influence whether or not an actual document
value is considered a root-level document" (unified-test-format.md:2873, and
:2821 for `$$matchesEntity`) -- and that distinction is the whole of the
extra-key rule: only a root document may carry keys the expectation does not
mention.
`root` now threads through `match` -> `special` -> the recursion. From under a
key it is always false, which is what it already was; from the top level it is
whatever the caller had.
25 cases go from FAIL to pass and none moves the other way. Every one is the
same shape -- an `expectResult` of `{$$unsetOrMatches: {acknowledged: false}}`
against a driver write result that also carries its counts, or the
`insertedId`/`insertedIds` forms of the same thing -- and every one was the
runner failing a result the engine had got right. 168/124/195 becomes
193/99/195; the scorecard is rewritten here so the delta belongs to this
change alone.
Mutation-checked: put the `false` back in the `$$unsetOrMatches` arm and
bulkWrite-deleteMany-hint-unacknowledged.json returns to 0 pass, 2 fail. The
`$$matchesEntity` arm is the same one-word change on the same sentence of the
spec, but the crud corpus does not use that operator once, so it rests on the
spec text rather than on a red test.
Two consecutive full runs, both 193/99/195, 175/175 files, 0 errored, no
lingering timers.
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