phpunit.xml.dist
<?xml version="1.0" encoding="UTF-8"?>
<phpunit backupGlobals="false"
backupStaticAttributes="false"
colors="true"
convertErrorsToExceptions="true"
convertNoticesToExceptions="true"
convertWarningsToExceptions="true"
processIsolation="false"
stopOnFailure="false"
>
<testsuites>
<testsuite name="Test Suites">
<directory suffix="Test.php">./tests</directory>
</testsuite>
</testsuites>
<filter>
<whitelist>
<directory>./src</directory>
<exclude>
<directory>./tests</directory>
<directory>./vendor</directory>
</exclude>
</whitelist>
</filter>
</phpunit>