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test(metadata-fs): triage snapshot on the #9339 anchor-event failure message#9400

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os-zhuang merged 1 commit into from
Aug 17, 2026
+14 −1
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test(metadata-fs): triage snapshot on the #9339 anchor-event failure message #9400

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15 changes: 14 additions & 1 deletion packages/metadata-fs/test/watch-write-registration.test.ts
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Original file line numberDiff line numberDiff line change
Expand Up@@ -163,7 +163,20 @@ describe('FileSystemRepository watcher — writes register their own path (#7282
const anchored = nextEvent();
await fs.writeFile(path.join(viewDir, 'anchor.json'), JSON.stringify({ label: 'anchor' }, null, 2));
await Promise.race([anchored, sleep(EVENT_WAIT_MS)]);
expect(events.map((e) => e.ref.name)).toContain('anchor');
// #9339: on failure, snapshot chokidar's own watched-set for viewDir. That
// one datum splits the failure into two disjoint classes — absent means
// the loss is upstream of `_handleFile` (the directory scan/poll layer);
// present means the loss is at or after the emit gate (`_handleFile` ran
// but no event reached this iterator). This does not change what makes
// the case pass or fail, only what the failure says when it does.
const anchorWatched = watchedIn(repo, viewDir);
expect(
events.map((e) => e.ref.name),
`#9339 triage — getWatched()[${JSON.stringify(viewDir)}] = ${JSON.stringify(anchorWatched)}. ` +
(anchorWatched.includes('anchor.json')
? `'anchor.json' IS present in the watched set: the loss is at or after the emit gate (_handleFile ran, no event reached the iterator).`
: `'anchor.json' is ABSENT from the watched set: the loss is upstream of _handleFile (the directory scan/poll layer never registered the path).`),
).toContain('anchor');

// ── The measurement ──────────────────────────────────────────────────
await repo.put(ref('fresh'), { label: 'fresh' }, { parentVersion: null, actor: 'tester' });
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