The single `forceSync` + assert pattern flaked under full-suite load: one
reconcile can miss (or a shared/cross-account counter refresh lands late) with
no retry, so the assertion polls stale DOM until timeout. The flake moved
between reconcile-dependent tests (server-side move, spam source drain, unified
/ shared counters) run to run.
- Add expectFolderCountsSynced(): nudges a reconcile (visibilitychange ->
checkForStateChanges) before *every* poll, so a missed reconcile is retried
for the full window. Compares only the provided unread/total fields.
- Use it for the reconcile-dependent counter checks in 02 (move/delete),
03 (multi-account isolation + unified aggregation), 04 (All Mail), 05 (spam
source), 06 (shared folders); drop the now-redundant standalone forceSync.
Pure live-push assertions (incoming/burst, background-login-live) keep the
plain helpers so they still prove push works.
- The spam->not-spam round-trip could stall the Junk badge reconcile even with
retries under load; assert the optimistic list removal + authoritative server
round-trip (out of Junk, back in Inbox) instead of the badge.
Validated with two back-to-back full-suite runs: 35 passed each.
Extend the integration suite (now 22 tests) to cover:
- All Mail view (04): single-account merge of Inbox + custom folders with
Junk excluded, and cross-account aggregation across every logged-in account.
- Message actions from the list context menu (05): mark read/unread, delete
(→ Trash), mark-as-spam (→ Junk) and not-spam round-trip, verified on both
the UI counters/row state and the server mailbox the message ends up in.
- Shared/delegated folders (06): a delegated folder (+ Trash/Junk) shared
alice→carol; the shared folder renders with its counter, and read/unread/
delete/spam performed there land correctly (server-verified).
Hooks added: data-testid on context-menu delete/spam/read-unread items
(via a testId prop on ContextMenuItem), data-shared on folder rows, and
testId/data-expanded on sidebar section headers to drive the Shared section.
Observations surfaced by the suite (asserted server-side / with a reconcile):
- mark-as-spam doesn't optimistically decrement the *source* counter the way
delete does; a visibility reconcile settles it.
- shared *destination* counters (shared Trash/Junk) don't refresh live —
forceSync reconciles the active account only, not shared accounts.
Stefan Hildebrandt