55ae8e42d2
* test(#2986): mutation-killer suite for config-schema.cjs (95 typed assertions) Stryker measured 4.62% mutation score on config-schema.cjs (6 killed, 124 survived). Surviving mutants documented that existing tests were exercising paths without verifying outputs. Adds tests/bug-2986-config-schema-mutation-killers.test.cjs (95 tests, 4 suites) targeting each surviving mutant class: - M1/M4: parameterized isValidConfigKey(key) === true for every member of VALID_CONFIG_KEYS. Kills static-key-fast-path mutations (if (VALID_CONFIG_KEYS.has(...)) return true; -> if (false) return true;) because no static key matches any DYNAMIC_KEY_PATTERN by design. - M2: representative dynamic-pattern keys (one per pattern). Each matches exactly one pattern. Kills .some -> .every mutation: with .every, no single key matches all patterns -> all dynamic keys would be rejected. - M3: strictEqual against the literal boolean true/false (not assert.ok truthy checks). Kills polarity-flip mutations. - Anchor-tightening: keys that differ from valid by one char beyond the documented shape (trailing dot-segment, empty agent name, non-enum tier, etc.). Kills regex-loosening mutations on ^, $, charset boundaries. Tests assert on typed boolean return values from the lib's public surface. Zero source-grep, zero raw-text matching. * chore(#2986): add changeset fragment for PR #3005 * test(#2986): use dynamic-only rep key for features pattern (CR feedback) CodeRabbit on PR #3005: features.thinking_partner is in the static VALID_CONFIG_KEYS set, so the static fast-path returns true before DYNAMIC_KEY_PATTERNS.some() is ever called. A Stryker mutant that removed only the features entry from DYNAMIC_KEY_PATTERNS would survive because the test only ever exercised the static path for that key. Replaced features.thinking_partner with features.some_dynamic_feature which is NOT in static keys, so isValidConfigKey must reach the dynamic path to return true. Added a per-rep invariant that asserts each representative key is NOT a member of VALID_CONFIG_KEYS, catching this class of mistake at test time on any future representative-key change.
7.8 KiB
7.8 KiB