Three desktop UI tests froze en-US-formatted strings while the
implementation formatters deliberately use the runtime locale
(new Intl.DateTimeFormat(undefined, ...) / Intl.NumberFormat(undefined,
...)) — runtime-locale output is the intended behavior for a localized
UI. On any non-en-US dev machine the tests fail even though the code is
correct:
# zh-CN host:
time.test.ts -> expected '三月' to be 'March'
billing -> Unable to find text 'Threshold: minimum is $10.'
(zh-CN renders USD as 'US$10')
billing -> Unable to find text '$25 added. Balance is refreshing.'
Assert the behavior contract instead of the frozen snapshot, per the
repo's testing guidance (behavior contracts over snapshots):
- time.test.ts: same-year month buckets render via fmtMonth, prior-year
via fmtMonthYear — assert sessionBucketLabel(bucket) equals the shared
formatter's output for bucket.at, with bucket-kind narrowing.
- billing/index.test.tsx: interpolate formatMoney(10) / formatMoney(25)
into the expected strings.
No production code changes.
Verified: zh-CN host 40/40, LANG=C.UTF-8 40/40, tsc clean, eslint clean.
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