E8 classified the 32 lines neither suite executes and stopped there. It never
asked which *arms* neither suite takes on lines both suites run, and that tier
is where what is left actually lives.
Rebuilt the union rather than reusing E8's artifact: a fresh jacocoTestReport
merged with E8's own API 34 .ec against one set of current class files. Union is
99.0% line, 90.1% branch. Controls confirm the device half applied -- 32 lines in
FFmpegEngine, 24 in Media3Engine, 15 in ConcatEngine, 9 in MainActivity that the
JVM suite never reaches.
Three things came out of it that are worth more than the count:
- **E8's denominator artefact is retired.** It warned the union's branch
denominator ran 16 ahead "entirely inside MediaProbe" and told readers not to
quote a MediaProbe branch figure raw. Rebuilt, both denominators are 1338 and
MediaProbe:321 reads mb=0 cb=4. All 16 sat on that one line, so it was a
property of how the report was built and never of the code.
- **CLAUDE.md's "18" is not stale.** It reproduces exactly under `mi == 0 && mb > 0`
(19 branches on 18 lines) and not under `ci > 0`, which admits partially-executed
signature lines and gives 139. Different metrics, not drift -- stated in E9 so
the next read does not "correct" a figure that is right.
- **Tier 1 is 22, down from 32.** #252 closed the ten getForegroundInfo lines and
added none. Two classes carry a one-line blind spot because #252 changed their
bytecode and JaCoCo rightly rejected E8's .ec for them; the bound is measured,
not assumed, and the line is not a gap.
Of the 22 branch sites, 12 are decided here -- compiler codegen, an F4/F6/F10
exemption already on record, or a thread race -- and recorded in E9 rather than as
new F-entries, since coverage-read-findings.md is being rewritten by #261. The
other 10 are filed as #262-#266, each naming the mutation that must go red or
saying that the read is the ticket.
FFmpegCommandBuilder:183's missed arm is VORBIS, which #261 is closing as it
lands, so the set is 21 the day it merges. E9 says to re-derive rather than edit
that sentence.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
JMR-devandClaude Opus 5
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