A name-filtered `node --test` that matches no test exits 0 and TAP reports
only the file itself. The clean run took that for a healthy witness and the
mutant run for `survived`, although no assertion ran either time — as in
Validate 36151140394 on #649, where a renamed test left a guard pattern empty.
- mutation-guard-outcome: nodeTestSelection/executedTestNames/
emptyTestSelection; a green oracle with a name filter and zero executed
named tests is `setup-failure` (clean run: «FAIL чистая подготовка»,
diff mode: attributed like any setup failure, #568).
- mutation-gate --check: staticTestSelectionProblems — every pattern must
match a literal test(/it(/describe( name in the guard's files; files with
${…} names only warn. POSIX quoting keeps \( inside "…".
- Registry today: 349 unique name-filtered commands run on dev, all execute
≥ 1 test; --check: 0 errors, 3 warnings (dynamic names).
- Tests: 6 new in test/mutation-guard-outcome.test.mjs (incl. the installed
node's real TAP and a registry-wide static check); 3 mutants.
- Docs: TESTING.md pointer, testing-notes/infrastructure.md section.
Issue: #650
User-Visible: no
Claude
43459bcbe0