export default { props : { items : [ 'whatever' ] , foo : 'wrong' , bar : 'right' } , test ( { assert , component , target , window } ) { const button = target . querySelector ( 'button' ) ; const event = new window . MouseEvent ( 'click' ) ; button . dispatchEvent ( event ) ; assert . equal ( component . foo , 'right' ) ; component . bar = 'left' ; button . dispatchEvent ( event ) ; assert . equal ( component . foo , 'left' ) ; } } ;