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/7.1/phpunit.xsd"
         bootstrap="tests/bootstrap.php"
         colors="true"
         failOnRisky="true"
         verbose="true"
         beStrictAboutChangesToGlobalState="true"
         beStrictAboutOutputDuringTests="true">

    <php>
        <server name="MYSQL_TEST_HOST" value="mysqldb" />
        <server name="MYSQL_TEST_MYSQL_DATABASE" value="test" />
        <server name="MYSQL_TEST_MYSQL_ROOT_USER" value="root" />
        <server name="MYSQL_TEST_MYSQL_ROOT_PASSWORD" value="root" />
        <server name="MYSQL_TEST_MYSQL_USER" value="dev" />
        <server name="MYSQL_TEST_MYSQL_PASSWORD" value="dev" />
    </php>

    <testsuites>
        <testsuite name="Tests">
            <directory>tests</directory>
        </testsuite>
    </testsuites>

    <filter>
        <whitelist>
            <directory suffix=".php">src</directory>
        </whitelist>
    </filter>
</phpunit>