phpunit.xml

<?xml version="1.0" encoding="UTF-8"?>
<phpunit backupGlobals="true"
         backupStaticAttributes="false"
         colors="true"
         verbose="true">

    <testsuites>
        <testsuite name="Environment">
            <file>test/environment_test.php</file>
        </testsuite>
        <testsuite name="Unit">
            <directory suffix="_tests.php">test</directory>
        </testsuite>
    </testsuites>

    <logging>
        <log type="coverage-clover" target="build/logs/clover.xml"/>
        <log type="junit" target="build/logs/junit.xml"/>
    </logging>

    <filter>
        <whitelist addUncoveredFilesFromWhitelist="true">
            <directory suffix=".php">src</directory>
        </whitelist>
    </filter>
</phpunit>