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