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Marc-André Bombeck
78186ba549
v1.4.25 W7 phase 7 — proposal §6.4 test strategy applied.
Seven cases cover the full per-user-tz pipeline against the
integration testcontainer:
1. CSV export for an Auckland user emits '+12:00' on measuredAt,
never the bare 'Z'. This is the issue #167 fix from the user's
end-to-end perspective: an Auckland user's exported spreadsheet
carries unambiguous local time.
2. CSV export for an Asia/Tokyo user emits '+09:00' (no DST in
Japan, deterministic offset year-round).
3. CSV export with no userTz (legacy library callers — admin tools,
canonical backup-on-disk) keeps the 'Z' suffix. Protects the
backward-compatibility path.
4. PUT /api/auth/me/timezone writes the new zone, the user row
reflects it, AND the in-process resolver cache returns the new
value immediately (the route invalidates on write — proves the
evict path works without waiting 60s for the TTL to roll).
5. PUT /api/auth/me/timezone rejects an invalid IANA zone with
422 and does not touch the column.
6. POST /api/auth/register captures a browser-detected zone from
the signup payload onto User.timezone.
7. POST /api/auth/register falls back to Europe/Berlin when the
payload's zone is invalid. The 'admin server default'
intermediate fallback layer is exercised by the unit suite —
the integration test runs against a testcontainer whose
migration history doesn't carry every AppSettings column,
so setting a non-NULL default would error before the route
runs. Documented inline.
The Coach snapshot's UTC bucketing (proposal §3 symptom 9) is
intentionally NOT asserted — that surface is deferred to a
follow-up wave because the snapshot's day/week bucketing pipeline
is a separate refactor that touches the prompt budget calculator.