phpunit.xml

<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/5.7/phpunit.xsd"
         bootstrap="src/autoload.php"
         backupGlobals="false"
         beStrictAboutOutputDuringTests="true"
         beStrictAboutTestsThatDoNotTestAnything="true"
         beStrictAboutTodoAnnotatedTests="true"
         verbose="true">
    <testsuite>
        <directory suffix="Test.php">tests</directory>
    </testsuite>

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

    <logging>
        <log type="coverage-html" target="build/coverage/html" title="phpDox"
             charset="UTF-8" highlight="true" lowUpperBound="60" highLowerBound="90"/>
    </logging>

</phpunit>