phpunit.xml

<?xml version="1.0" encoding="utf-8" ?>
<phpunit
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/4.8/phpunit.xsd"
    bootstrap="vendor/autoload.php"
    colors="true"
>
    <testsuites>
        <testsuite name="Facebook InstantArticles SDK test suite">
            <directory>./tests</directory>
        </testsuite>
    </testsuites>
    <filter>
        <whitelist>
            <directory>./src</directory>
        </whitelist>
    </filter>
</phpunit>