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51 lines
3.5 KiB
Markdown
51 lines
3.5 KiB
Markdown
# Item5 integrity note
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```yaml
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test_integrity_note:
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change_type: ["new_tests"]
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scenarios:
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- id: SCN-active-primary-disposed-mirror
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given: "primary media is active, with an alternate mirror"
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when: "the last owner disposes then primary media errors"
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then: "no mirror HEAD starts; chain settles null without cache or stale UI, later fresh request succeeds"
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- id: SCN-active-shared-mirror
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given: "two registrations share active media"
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when: "one owner disposes and primary errors"
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then: "ordered mirror serves live owner, healthy cache avoids later requests, disposed badge stays unchanged"
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- id: SCN-active-rejoin-mirror
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given: "primary active media survives last-owner disposal"
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when: "same-source live owner rejoins before primary error"
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then: "dedup survives and ordered mirror serves new owner without duplicate primary IO"
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- id: SCN-active-later-mirror-disposal
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given: "first mirror media is active and another mirror exists"
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when: "last owner disposes then first mirror errors"
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then: "next mirror HEAD does not start, cancellation settles without cache or stale UI"
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- id: SCN-active-timeout-cleanup-retry
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given: "media is active with real configured initial and longer retry deadlines"
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when: "last owner disposes and controlled clock reaches initial timeout"
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then: "slot/source clear, no new retry resources or cache, later fresh request is healthy"
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- id: SCN-completed-active-final-error-cache
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given: "active primary has no further candidate"
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when: "last owner disposes then media errors"
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then: "completed active failure keeps existing offline cache result without stale UI"
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observable_outcomes:
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- "fetch/media starts, source cleanup, slot release, promise settlement and actual cache/inflight records"
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- "live/disposed connected badge state and ordered mirror requests"
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determinism_controls:
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- "Real observer/controller/cache with controlled IntersectionObserver, jsdom native media event APIs and stubbed external fetch/media IO"
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- "node:test mock clock advances configured4000ms timeout; no sleeps, retries, public network or forced exit"
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anti_cheat_rationale:
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prevents:
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- "returning cancelled for live shared/rejoining owners"
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- "guarding only first mirror or discarding completed active results"
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- "caching cancellation as offline or starting obsolete retry resources"
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- "over-mocking queue/controller instead of service boundaries"
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relaxation:
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did_relax_any_assertion: false
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if_true_explain_spec_basis: ""
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```
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Existing assertions unchanged; six new scenarios (18 total lifecycle scenarios). Baseline before guard naturally exits1 with new primary/later-mirror failures (16pass/2fail/0cancelled). Fixed18pass/0fail/0cancelled. Unique note avoids shared integrity-file writes during parallel trial.
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`python3 /tmp/item5-mutants.py`: six deliberately broken variants each naturally exit1 with named assertion failures,0 cancelled, restored in finally before gates. Missing candidate guard kills primary/later-mirror scenarios; cancelling live mirrors kills shared+rejoin controls; checking only first mirror kills later-mirror case; caching cancellation kills null/cache expectations; discarding final active errors kills existing-offline-cache scenario; removing both media no-owner checks kills timeout cleanup/retry. Results `/tmp/item5-mutants.json` and `/tmp/item5-mutant-*.log`. No gate/test-registration changes or timed-out mutants counted.
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