Test file created

Suppression window probed at its edge

Expired entries are released, not just reported absent

Time advanced through the injected clock

Sweep return value asserted

Live entries survive a sweep

Key scoping covered

Fresh store, transport and clock per test

Test file created

Calls genuinely overlap

Side effect asserted exactly once under the race

Every racing caller receives the same outcome

Race widened beyond two callers

No sleep used to sequence the race

Fresh store and gateway per test

Test file created

Side effect asserted exactly once on replay

Replay returns the original response

Key reuse with a different payload is covered

No credit applied on the mismatch path

Distinct keys still apply separately

Missing key covered

Fresh store and ledger per test