function testDelete() { //Arrange $restaurant_name = "McDonalds"; $id = null; $test_restaurant = new Restaurant($restaurant_name, $id); $test_restaurant->save(); $restaurant_id = $test_restaurant->getId(); $cuisine_name = "burgers"; $test_cuisine = new Cuisine($cuisine_name, $id, $restaurant_id); $test_cuisine->save(); //Act $test_cuisine->deleteOne(); //Assert $this->assertEquals([], Cuisine::getAll()); }