Mutation Reports

Mutation testing rewrites the bytecode and checks whether the test suite catches each change — a far harder bar than line coverage. These pages render each module’s PIT result (mutations.xml) in the site design: kill rate, test strength, the per-mutator breakdown, and the actual surviving-mutant list.

The mature library modules carry the production guarantee. Headline kill-rate numbers across the site are current as of 00.75.20 (the last reactor-wide touched-module PIT pass); the detailed per-mutator / surviving-mutant drill-downs below are rendered from an earlier snapshot generated under the pre-00.73 security-* module names and package paths — page titles below use the current jSentinel-* names, but survivor class/package references inside each report predate the rebrand. For the current headline number of any module, see its release notes.