Laravel multiple databases PHPUnit

I am developing a application with multiple database access and I want to have PHPUnit tests with this. My current approache is to have in the config\databases.php multiple connections (mysql, mysql2, mysql3) so I can have in the env file a different access for all of them. Because of this, the models have the $connection variable defined. In my first feature test I want to access a page and just see the data that I am providing in my factory, so just to get things started. In my phpunit.xml file I have specified the DB_CONNECTION to be sqlite and for each of the MySql setting to have the value=":memory:".

The problem that I have is the fact that when I run the tests, i have this error -> PDOException: SQLSTATE[HY000] [1049] Unknown database ':memory:'.

So somehow Laravel is not parsing the memory value. Any suggestion will be mush appreciated. Thank you

via Chebli Mohamed