The split shipped verbatim-proven and green, but measuring it afterwards
showed the tests barely touched it: monitor.sh 44.44%, the policy probes
7.69%, and the health probes never loaded at all. Every _check_* decides
whether phone enforcement is reported as healthy, so an untested probe is
an enforcement failure that reports itself as fine.
The mock stubs adb_root_shell at the function boundary rather than putting
a fake adb on PATH: the probes never invoke adb, they call a function from
adb_common.sh, so a PATH stub would never be consulted. Dispatch is by
pattern, not exact string, because the real commands embed awk programs
with escaped $2, nested quotes and 2>/dev/null redirections.
Two defects the new tests found:
- _mon_escape_json never escaped double quotes. Written as
${escaped//"/\"}, bash reads the bare quote as opening a quoted string,
so the pattern silently degraded to `/\` with an empty replacement. Any
check message containing a quote produced invalid JSON.
- monitor_print_format_warning's multi-line array literal and
collect_snapshot's `{ ... } >file` group held 12 lines that no test
could ever cover: kcov instruments the continuation lines and the
closing brace, but bash only reports a statement at its first line.
Reproduced in an isolated 9-line case before changing anything.
Assertions are mutation-proofed: 18 mutations of the probes' status
decisions, 18 killed. The first run had one survivor -- the repairable
flag was asserted nowhere -- now pinned in both directions.
monitor.sh 104/104 = 100.00% (was 44.44%)
monitor_checks_policy.sh 65/65 = 100.00% (was 7.69%)
monitor_checks_health.sh 79/79 = 100.00% (was 0%)
test_monitor.sh 82 passed, 0 failed (was 9)
Cases live in two sourced files purely to stay under the 250-line cap;
test_monitor.sh remains the single entry point, so one coverage command
still measures all three subjects. Over-cap count unchanged at 22.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011w2Pj4Ek3ZNMQVYcFHgXDY
