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'); } };