phpunit.xml

<?xml version="1.0" encoding="UTF-8"?>

<phpunit bootstrap="./vendor/autoload.php">

    <php>
        <ini name="error_reporting" value="-1" />
    </php>
    <testsuites>
        <testsuite name="functional tests">
            <directory>./tests/Functional</directory>
        </testsuite>
    </testsuites>

    <filter>
        <whitelist>
            <directory>./src/</directory>
            <exclude>
                <directory>./vendor/</directory>
                <directory>./tests/</directory>
            </exclude>
        </whitelist>
    </filter>
</phpunit>