[thunderer]

Infection left 160 escaped mutants on master, and the GitHub annotations listed them on every pull request diff. Tests from an earlier branch kill 25 of them. I ran each of the remaining 135 against master on 2000 random inputs through all parsers, the processor, the serializers and the facade: 7 of them change the output and can be killed by tests, the other 128 changed nothing and are most likely equivalent.

• added tests that kill the 32 mutants, without changes in src: escaped mutants go from 160 to 128 and Covered Code MSI from 90% to 92% on PHP 8.4,
• Infection now mutates only the lines changed by a pull request (--git-diff-lines against the base branch), so annotations show only mutants of that change, and pushes to master still run all mutants,
• the checkout now fetches the full history, so the base branch is available for the diff,
• Infection now runs in its own job on PHP 8.5 only, so the test matrix no longer fetches the full history or reinstalls PHPUnit after Psalm,
• verified PHPUnit on PHP 5.5-8.5, Psalm on PHP 7.4-8.5, Mago and Infection.

This pull request changes no lines in src, so its own CI run shows how Infection handles a diff without changed sources.

[github-actions]

Infection

No mutants: this pull request changes no lines in src.