const items = [ {}, {} ]; export default { skip_if_ssr: true, props: { foo: items[0], items }, test({ assert, component, target }) { const options = target.querySelectorAll( 'option' ); assert.equal( options[0].selected, true ); assert.equal( options[1].selected, false ); component.foo = items[1]; assert.equal( options[0].selected, false ); assert.equal( options[1].selected, true ); } };