phpunit.xml
<phpunit bootstrap="vendor/autoload.php">
<testsuites>
<testsuite name="all">
<directory suffix="Test.php">./tests</directory>
</testsuite>
</testsuites>
<filter>
<whitelist processUncoveredFilesFromWhitelist="false">
<directory suffix=".php">src</directory>
<exclude>
<directory suffix=".php">tests</directory>
</exclude>
</whitelist>
</filter>
</phpunit>