phpunit.xml

<?xml version="1.0" encoding="utf-8" ?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/4.8/phpunit.xsd"
         colors="true"
         convertErrorsToExceptions="true"
         stopOnFailure="true">
    <testsuites>
        <testsuite name="Unit Tests">
            <directory suffix=".phpt">tests</directory>
        </testsuite>
    </testsuites>
    <filter>
        <whitelist processUncoveredFilesFromWhitelist="true">
            <directory suffix=".php">src</directory>
            <exclude>
                <directory>./tests</directory>
                <directory>./vendor</directory>
            </exclude>
        </whitelist>
    </filter>
</phpunit>