The file claimed it stayed inside its own account. "Backup now" enqueues the
pass for every account on the instance, so the header says that now, and says
what is confined instead: the restore's transaction, and the instance-wide
settings the dialog's opt-in leaves alone — which the journey asserts is clear
before it confirms, because a default that flipped would hand this file the
power to rewrite the document size cap for every spec sharing the server.
The run's own answer is asserted where it happens. Without it a missing worker
cost two minutes of polling and then blamed the backup pass for a 503 about
something else; the failure now names the endpoint in two seconds.
The rest are the assertions that pinned incidentals rather than promises: the
Argon2 cost comes from the constant the writer exports, so a legitimate cost
bump is not a red spec; the document is found by id rather than by position;
the poll compares the row against the row it saw before the click rather than
against the runner's clock; the non-admin bounce is pinned by pathname; the
empty-state CTA has its own test id, so nothing has to pick between two
buttons that share one; the deliberately corrupted copy is deleted when the
control is done with it instead of sitting in the console's list; and the
fixture orders by id after the timestamp so a tie cannot present as a change.
A `DataBackup` row that fails to decrypt answered 500 on the restore, the
download and the preview. It is not a server fault: either the key that wrote
the copy is no longer in `ENCRYPTION_KEYS` — a rotation that dropped the legacy
entry before the script reported zero rows, the case the rotation runbook warns
about — or the stored bytes are not the ones that were written. Every other
bad-input arm on those routes already answers 4xx, and the 500 also paged the
error reporter as if the process had broken.
All three now answer 422 with `meta.errorCode = backup.payload.undecryptable`
and one shared sentence, so the three routes cannot drift into three wordings
for one condition. The download's second 500 stays: a payload this instance
wrote and cannot parse really is a fault here.
The two routes that open a stored copy move from the unpublished list into the
contract, because the refusal is now a promise an operator can look up rather
than whatever the handler happened to answer. The restore publishes its
`Idempotency-Key` header with them.
One journey across the whole path: an account writes readings in three
domains and files a PDF, downloads its own record as the passphrase-sealed
archive, an admin snapshots it from the backups console, and the snapshot is
restored over an account that has since lost a reading and a dose and gained
one the snapshot never saw.
The assertions address what the documentation promises rather than what the
implementation happens to do. The archive is checked byte by byte against the
HLX1 header in src/lib/export/passphrase-archive.ts — magic, version, KDF id
and the Argon2 cost the file carries — because "a file arrived" is equally
true of plaintext JSON under a new extension. The restored reading and dose
are checked by their ORIGINAL ids, because a restore that re-created them
under fresh ones would have written a different record that reads the same.
The reading created after the snapshot is asserted GONE: the runbook says the
restore replaces the account's data tables, and replacing is not merging.
Two refusing controls. A stored copy with one flipped ciphertext byte is
refused with the route's decrypt failure and leaves the record untouched — the
envelope is AES-256-GCM and its tag covers every byte, so the flip is caught
before the transaction opens. A delegate holding whole-record READ inside the
account gets the not-covered panel instead of the export card, never reaches
the console, and is refused 403 by the list, the manual run and the restore,
the last of them naming the real snapshot so the refusal cannot be mistaken
for a missing row.
Waiting is on the job's own evidence: the console's endpoint is polled until
this account's stored copy is newer than the click, so nothing in the file
guesses at a queue. The journey has its own account, its own delegate and its
own cookie jars; only the reset between repetitions and the deliberate
corruption reach Postgres directly, because a browser cannot express either.
The backups console gains data-testid hooks and a data-backup-id on each row
so the spec addresses controls rather than translated labels.
Marc-André Bombeck