TransitionStub doesn't work with mount({ template: '...' })

[denisinvader]

Version

1.0.0-beta.15

Reproduction link

https://github.com/denisinvader/vtu-transition-issue/tree/master

Steps to reproduce

Use the transition in any component. Then tests mount this component by template.

// ...

const wrapper = mount({
  components: { 'test-component': TestComponent },
  template: '<test-component />'
});

// ...

Then update data in wrapper (or trigger an action) that will update transition state.

What is expected?

transition component works synchronously - test pass

What is actually happening?

transition component works asynchronously and element styles equals to "display: none" - test fail

---

May be it's not the best way - mount testing component by template in configuration, but in a production app I want to test how component works with v-model and updates parent state

[denisinvader]

Also it seems like not working when <transition> in an importing component. For example: if I test a HOC which renders another component with a transition, transition works asynchronously (transitionStub doesn't apply).

Adding stubs: { transition: TransitionStub } in mount doesn't help.