phpunit.xml
<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.5/phpunit.xsd" bootstrap="vendor/autoload.php" colors="true" cacheDirectory=".phpunit.cache">
<testsuites>
<testsuite name="Test Suite">
<directory suffix="Test.php">./tests</directory>
</testsuite>
</testsuites>
<source>
<include>
<directory suffix=".php">./src</directory>
</include>
</source>
</phpunit>