Create a file named .env.test.local at the root of the project containing: ```yaml APP_ENV=dev APP_DEBUG=0 APP_SECRET=1a2e701e2de1f2b4eb9c320e23ed5cf2 DATABASE_URL=mysql://:@:/ DATABASE_PREFIX= MAILER_URL=null://localhost ``` !IMPORTANT must be different from the production DB name. should be able to create a database. Install composer (needed to run the tests): https://getcomposer.org/doc/00-intro.md run tests like the following: ./vendor/bin/simple-phpunit --bootstrap tests/bootstrap.php tests/ bootstrap.php create a database (named like choosen in .env.test.local) and init the ORM.