phpunit.xml

<?xml version="1.0"?>
<phpunit
  bootstrap="tests/bootstrap.php"
  beStrictAboutTestsThatDoNotTestAnything="true">
  <testsuites>
    <testsuite name="comments">
      <directory suffix="Test.php">tests</directory>
    </testsuite>
  </testsuites>
  <filter>
        <whitelist processUncoveredFilesFromWhitelist="true">
            <directory suffix=".php">src</directory>
        </whitelist>
    </filter>
</phpunit>