phpunit.xml
<?xml version="1.0" encoding="UTF-8"?>
<phpunit colors="true"
bootstrap="./vendor/autoload.php"
convertErrorsToExceptions="true"
convertNoticesToExceptions="true"
convertWarningsToExceptions="true">
<testsuites>
<testsuite name="Application Test Suite">
<directory>./tests/</directory>
</testsuite>
</testsuites>
<filter>
<whitelist>
<directory suffix=".php">./src/</directory>
</whitelist>
</filter>
</phpunit>