function test_update() { //arrange $stylist_name = "Nora"; $id = null; $test_stylist = new Stylist($stylist_name, $id); $test_stylist->save(); $new_stylist_name = "Dora"; //act $test_stylist->updateStylistName($new_stylist_name); //assert $this->assertEquals("Dora", $test_stylist->getStylistName()); }