Automated testing & analysis

Composer Stager aims at the highest level of quality standards. As many as possible are enforced by automated tools:

Functional & unit testing

It uses PHPUnit (phpunit.xml.dist) for functional and isolated unit testing. The quality of the tests themselves is analyzed using Infection (infection.json5.dist) for mutation testing.

Static analysis

Architecture and design policies are enforced and probable bugs are detected by custom and out-of-the-box rules using these tools:

• PHP_CodeSniffer (PHPCS) (phpcs.xml.dist)
• PHPStan (phpstan.neon)
• Rector (rector.php)
• ...and more. See GrumPHP tasks in grumphp.yml.dist.

See also the Coding standards & style guide.

Automation

It uses GitHub Actions (.github) to run its full test suite and essential quality tools on pull requests and on a regular schedule.