API mount shallow renderToString Mounting Options context slots stubs mocks localVue attachToDocument attrs listeners provide other options Wrapper attributes classes contains emitted emittedByOrder exists destroy find findAll html is isEmpty isVueInstance name props setData setMethods setProps text trigger update isVisible WrapperArray at contains exists destroy filter is isEmpty isVueInstance setData setMethods setProps trigger update isVisible components TransitionStub TransitionGroupStub RouterLinkStub Selectors createLocalVue config