File: phpunit.xml

<?xml version="1.0" encoding="UTF-8"?>
<phpunit backupGlobals="false"
         backupStaticAttributes="false"
         bootstrap="vendor/autoload.php"
         colors="true"
         convertErrorsToExceptions="true"
         convertNoticesToExceptions="true"
         convertWarningsToExceptions="true"
         processIsolation="false"
         stopOnError="false"
         stopOnFailure="false"
         syntaxCheck="true"
         verbose="true">
    <testsuites>
        <testsuite name="Str Test Suite">
            <directory suffix="Test.php">tests</directory>
        </testsuite>
    </testsuites>
    <filter>
        <whitelist>
            <directory suffix=".php">src</directory>
        </whitelist>
    </filter>
    <logging>
        <log type="json" target="build/logfile.json"/>
    </logging>
</phpunit>