2 Commits
Author SHA1 Message Date
Stefan HildebrandtandLinus Rath ddb596affc fix: isolate per-account state snapshots from leakage and mutation
account-state-manager had two latent correctness issues:

1. Shared references: snapshotAccount stored the live store arrays/objects
   directly, so a later in-place mutation (array push/splice, or a shared
   email object being stamped) retroactively corrupted an earlier snapshot.
   Now copies the captured collections.

2. Incomplete restore: the snapshot only captures a subset of each store's
   fields, but restoreAccount applied it with a merge, leaving every other
   field (email selection, loading flags, tag counts, …) at the previously
   active account's values. It only worked because every caller happened to
   call clearAllStores() first. restoreAccount now resets the stores to
   baseline itself before layering the snapshot back on, so it is correct
   standalone and can't leak state across accounts.

Adds tests pinning the isolation guarantees.
2026-06-20 13:09:26 +02:00
Stefan HildebrandtandLinus Rath 2fac6ebfb8 test: add characterisation tests for untested integration seams
Golden-master tests pinning the CURRENT behavior of high-value modules
that had no coverage — integration seams, security helpers, two API
route handlers, and complex pure utils. 111 tests across 12 files.

New tests:
- auth-crypto / session-cookie: AES-256-GCM session encryption roundtrip,
  tamper/version/missing-secret handling; cookie-slot naming.
- unified-mailbox: multi-account fan-out, sort, totals, per-account error
  isolation, personal-vs-shared JMAP target resolution, counts/roles.
- account-state-manager: snapshot/restore across the six real Zustand
  stores; clearAllStores reset shape; evict.
- mdn: RFC 5322 MDN assembly (CRLF, RFC2047, base64 wrap, headers).
- tnef: winmail.dat binary parsing from hand-built fixtures.
- download-filename / subject-prefix / birthday-calendar / eml-import:
  filename templating, multilingual prefix stripping, birthday event
  generation, .eml/.zip import.
- webdav / caldav-discover route handlers: auth guards, path validation,
  upstream URL construction, candidate probing.
- helpers/factories.ts: shared makeEmail/makeMailbox/makeFakeJmapClient.

Tests follow the repo's existing patterns (route-import, fake IJMAPClient,
fetch spy, real store singletons). Where current behavior looks buggy it
is pinned and flagged with a // CHARACTERISATION: comment (see PR for the
suspected-bugs list); no production code is changed.
2026-06-19 23:52:42 +02:00