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JMR-dev 5a5a680b4c Re-measure after wave 3, and write down the two kinds of gap it had to separate
92.8% line (2183/2352), 81.3% branch (1091/1342), 584 JVM tests in 87 classes, measured
2026-09-02 on the tree this branch creates rather than quoted from a PR body.

The shape of the wave is worth more than the number, and it is different from the two
before it. Waves 1 and 2 were finding uncovered code; by wave 3 there was little of that
left, so the gaps had to be sorted before any test was written. Coverage gaps -- filtered
to sites where JaCoCo reports mi > 0, which is what separates a real gap from a partial
branch on a compound condition, and which cut the candidate list roughly in half. And
assertion gaps, where JaCoCo is green and nothing checks the answer: MainActivity's rail
and bottom bar were both executed and transposing them passed the entire suite, as did
swapping the two progress-notification strings and swapping Content's two destinations.
No coverage number would have found any of the three.

Naming the required mutation per ticket earned its keep three times, each recorded with
what the weak assertion actually was. Also recorded: a green mutation is only evidence
when the mutation is a real change -- one classify reordering was semantically equivalent
for every reachable input, and a bad mutation and a weak test look identical in the output.

Two entries came back as not gaps, which is a result rather than a shortfall:
ContainerCapabilities:282's exclude filter cannot drop anything, and probeForConcat's
catch arm is unreachable on this runtime -- Robolectric's MediaExtractor never throws from
setDataSource, measured across four input shapes.

Both denominators moved, in opposite directions and for different reasons, so they are
stated rather than folded into the percentage: 1340 -> 1342 branches from MediaProbe.merge,
2348 -> 2352 lines from the ConcatJoiner interface. Neither is new untested code.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Recovered onto main after hitting #160's trap for real. #189 was opened against
test/concat-engine-seam and, unlike #184-#188, never retargeted to main before merging --
so it merged into a branch that had already been merged and left behind. GitHub reported
`merged`, the PR shows MERGED, and none of it was on main: `git merge-base --is-ancestor`
is what said so, one line, immediately.

That check is the entire reason this was a five-minute recovery rather than a coverage
entry that silently stayed three points stale. The failure mode is exactly what CLAUDE.md
warns about; what it did not say, and now would, is that the auto-retarget it describes
belongs to GitHub's stacking feature, so a stack opened with plain `gh pr create --base`
has to be retargeted by hand for every single PR -- and missing one is invisible until you
check ancestry.

Numbers re-measured on this tree with --rerun-tasks rather than inherited from the branch
they were taken on: 584 tests, 0 failures, 2183/2352 line, 1091/1342 branch. Same figures,
earned again.
2026-09-01 23:46:51 -05:00
Jason Ross 7f23ea8fd7 Merge pull request #188 from JMR-dev/test/concat-engine-seam
C1 (#176): give ConcatWorker the seam ConversionWorker always had, and test what was behind it
2026-09-01 23:44:27 -05:00
Jason Ross 05422a6896 Merge pull request #187 from JMR-dev/test/mediaprobe-merge-seam
C2 (#177): cut MediaProbe's two-probe merge into a seam, and ask which probe wins
2026-09-01 23:44:21 -05:00
Jason Ross fa3a32e5c0 Merge pull request #186 from JMR-dev/test/adaptive-shell-wiring
B1 (#173): tell the rail from the bottom bar, and the Convert tab from the Join tab
2026-09-01 23:13:01 -05:00
Jason Ross e2c9981bbe Merge pull request #185 from JMR-dev/test/aac-audio-args
B3 (#175): pin the AAC arm every ordinary conversion takes
2026-09-01 23:12:54 -05:00
Jason Ross 7a5622c896 Merge pull request #184 from JMR-dev/test/notification-progress-text
B2 (#174): read what the progress notification actually says
2026-09-01 23:12:35 -05:00
Jason Ross d4ca6b7b0f Merge pull request #183 from JMR-dev/test/media3-muxer-guard
A5 (#171): fire the muxer guard that repairs "MP4 for everything", which had never fired
2026-09-01 23:02:03 -05:00
Jason Ross bbe40cf8f7 Merge pull request #182 from JMR-dev/test/hardware-fallback-and-cancellation
A2 + A3 (#168, #169): the hardware fallback, the cancellation that must not take it, and the name a job may not have
2026-09-01 22:36:13 -05:00
Jason Ross f81d76e730 Merge pull request #181 from JMR-dev/test/unprobeable-join-clip
A4 (#170): join the two halves of an unreadable join clip, and record why the catch arm stays device-only
2026-09-01 22:34:25 -05:00
Jason Ross 8849ae96eb Merge pull request #180 from JMR-dev/test/one-branch-outcomes
A6 (#172): six one-branch outcomes nothing produced, and one that cannot be produced
2026-09-01 22:26:27 -05:00
Jason Ross 25e14b26d9 Merge pull request #179 from JMR-dev/test/foreground-type-regimes
A1 (#167): pin all three foreground-service regimes, and the boundary between two of them
2026-09-01 22:13:13 -05:00

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