The Strava writer had eight mocked test files and no test against a
database. strava-sync.test.ts runs the real sync behind a fake Strava API at
the safeFetch boundary: field mapping, the after= watermark, idempotent
re-sync on the (user, source, external id) key, in-place overwrites that keep
what only the detail read carries, a cursor that never moves backwards or
past a row that failed to write, the paged backfill with its resume point
and requeue, token refresh with both rotated tokens stored sealed, and the
integration ledger after transient and permanent failures. The sync, the
disconnect and the credential routes are covered through the kit.
The mocked cases that asserted call counts and mock ordering are removed;
the pure retry-after parsing stays a unit test.
Marc-André Bombeck
26df61f638