phpunit.xml

<phpunit
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/4.5/phpunit.xsd"
    colors="true"
    convertErrorsToExceptions="true"
    convertNoticesToExceptions="true"
    convertWarningsToExceptions="true"
    forceCoversAnnotation="true"
    stopOnError="true"
    stopOnFailure="true"
    beStrictAboutTestsThatDoNotTestAnything="true"
    checkForUnintentionallyCoveredCode="true"
>
    <filter>
        <whitelist>
            <directory suffix=".php">./src</directory>
        </whitelist>
    </filter>
</phpunit>