middlewares/phpunit.xml

<phpunit
        bootstrap="vendor/autoload.php"
        colors="true"
        printerClass="DiabloMedia\PHPUnit\Printer\PrettyPrinter"
>
    <testsuites>
        <testsuite name="router">
            <directory>tests</directory>
        </testsuite>
    </testsuites>
    <filter>
        <whitelist processUncoveredFilesFromWhitelist="true">
            <directory suffix=".php">src</directory>
        </whitelist>
    </filter>
</phpunit>