phpunit.xml
<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/5.5/phpunit.xsd"
bootstrap="vendor/autoload.php"
backupGlobals="false"
beStrictAboutCoversAnnotation="true"
beStrictAboutOutputDuringTests="true"
beStrictAboutTestsThatDoNotTestAnything="true"
beStrictAboutTodoAnnotatedTests="true"
verbose="true">
<testsuite>
<directory suffix="Test.php">tests</directory>
</testsuite>
<filter>
<whitelist processUncoveredFilesFromWhitelist="true">
<directory suffix=".php">src</directory>
</whitelist>
</filter>
</phpunit>