math/phpunit-main.xml

<?xml version="1.0" encoding="UTF-8"?>
<phpunit colors="true" bootstrap="phpunit-main.php">
    <testsuites>
        <testsuite>
            <directory>tests</directory>
            <exclude>tests/CalculatorDetectTest.php</exclude>
        </testsuite>
    </testsuites>
    <filter>
        <whitelist processUncoveredFilesFromWhitelist="true">
            <directory>src</directory>
        </whitelist>
    </filter>
</phpunit>