The measurement
- Guards mutated
- 48
- Guards over published claims
- 48
- Schema
- canli.alphac-mutation-ledger.v1
Coverage is derived. The guard set is computed from tests/unit by the same rule every run, so a guard added without a mutation appears here rather than joining the unmutated majority unnoticed.
Ledger
Nested beyond what this page renders. Read it in the artifact.
Negative controls
Nested beyond what this page renders. Read it in the artifact.
Why. A check that cannot fail is worse than no check: it produces the confidence of a guard with none of the protection, and a passing test looks identical whether it is watching something or nothing.
Check it yourself
Every figure above is read from /glassbox/mutation_ledger.json, the
artifact the engine wrote.