This package uses PHPUnit 13 for its test suite. composer.json already lists:
phpunit/phpunit:^13.1
If PHPUnit is missing from a clone, install it with:
composer require --dev phpunit/phpunit:^13.1Install dependencies for this repository, then run PHPUnit from this package root:
composer install
vendor/bin/phpunit -c phpunit.xml.distOn Windows, use vendor\bin\phpunit.bat.
The unit suite covers the driver contract, factory-created handlers/processors, PSR-3 level handling, and the adapters that bridge CommonPHP targets and processors into Monolog.