Assert the join failure message against a real FFmpeg session #221

Merged
JMR-dev merged 3 commits from test/join-failure-message-on-device into main 2026-09-06 13:51:00 +00:00
3 Commits
Author SHA1 Message Date
Jason Ross 350b179c9e Merge branch 'main' into test/join-failure-message-on-device 2026-09-06 08:43:20 -05:00
JMR-devandClaude Opus 5 4d090d9a81 Move CLAUDE.md's instrumented counts with the test that changes them
The suite goes 60 -> 61 and the gating leg 57 -> 58, because the new join-failure
test carries no @FailsOnEmulatorApi37 and so runs on every level including 37.

FAILS_ON_EMULATOR_API37_BASELINE stays at 3, checked rather than assumed:
e2e-report-shape.sh counts lines matching '^[[:space:]]*@FailsOnEmulatorApi37',
which is three annotations -- the fourth occurrence in the tree is the KDoc at
Media3EngineTest.kt:195 saying a test is deliberately NOT marked, and the anchor
excludes it. Nothing here adds a marker.

Carried by this PR rather than the docs one so the file never states a count main
does not have.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-05 21:25:44 -05:00
JMR-devandClaude Opus 5 39327beea7 Assert the join failure message against a real FFmpeg session
#217 closed by noting the join legs had not been run locally. Running them would
not have answered it: nothing on either source set drove a real join *failure*,
so the message unified in #203 was asserted only against values a JVM test hands
to sessionOutcome directly. CI had already run those legs green on the merged
commit, so the outstanding item was a gap in coverage rather than a gap in
execution.

The new case forces a failure with an input that does not exist -- rejected the
same way by every FFmpeg build, unlike malformed media -- and asserts the message
names the operation, carries the return code, and has detail after it.

That last clause is the device-only half. getReturnCode, getFailStackTrace and
getAllLogsAsString are native reads; if the log tail came back empty on a device
the user would see "Joining failed (1): " with nothing after the colon, and every
JVM test would still pass.

It deliberately does not pin which detail source wins. On an ordinary non-zero
return code FFmpegKit reports no fail stack trace, so stack-trace-first and
log-tail-first produce identical text and no assertion here could tell them
apart. SessionOutcomeTest pins that, where both sources can be non-blank at once.
Claiming it here would be a KDoc asserting more than the test checks.

Measured on the local API 33 emulator: 61/61 green with the test, and with both
detail sources nulled in ConcatEngine it fails on the intended assertion --
"the message stopped at the return code and told the user nothing, was:
'Joining failed (1): '" -- so the prefix and return code survive the mutation and
only the device-only claim goes red.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-05 21:25:05 -05:00