Fatal error: Uncaught Error: Class 'OxidEsales\TestingLibrary\UnitTestCase' not found in /www/shop/vendor/oxid-esales/oxideshop-ce/tests/Unit/Core/DatabaseTest.php:27 Stack trace: #0 {main} thrown in /www/shop/vendor/oxid-esales/oxideshop-ce/tests/Unit/Core/DatabaseTest.php on line 27