Update TestCase.php

tests/src/TestCase.php

@@ -62,5 +62,12 @@ abstract class TestCase extends BaseTestCase
             ...$app['config']->get('view.paths'),
             __DIR__ . '/../resources/views',
         ]);
+
+        $app['config']->set('database.connections.testing', [
+            'driver' => 'sqlite',
+            'database' => ':memory:',
+            'prefix' => '',
+            'foreign_key_constraints' => true,
+        ]);
     }
 }