utils/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>
  <logging>
    <log type="coverage-html" target="./coverage"/>
  </logging>
</phpunit>