phpunit.xml

<?xml version="1.0" encoding="UTF-8"?>
<phpunit 	
    bootstrap="vendor/autoload.php"			
    colors="true"
    convertErrorsToExceptions="true"
    convertNoticesToExceptions="true"
    convertWarningsToExceptions="true"
    stopOnFailure="true">
    <testsuites>
        <testsuite name="Unit Tests">
            <directory>tests</directory>
        </testsuite>
    </testsuites>
    <filter>
        <whitelist>
            <directory suffix=".php">src/</directory>
        </whitelist>
    </filter>
</phpunit>