Support testing emitted events about vue-test HOT 3 OPEN

That looks really nice! I didn't even think of doing that, because I rarely use events, but this will definitely be useful.

I've invited you to be a collaborator on this repo - thank you for your contributions.

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Thanks for adding me as a collaborator!

I just created PR #8 for this feature. It's pretty straightforward, but after posting above, I got to thinking about whether it's a good idea to keep adding parameters to mount().

In PR #7 , I put together an example of an API that takes a hash instead, so usage looks like this:

it('should ...', () => {
    const HelloComponent = mount(Hello, {
      props: {
        prop1: 'foo',
        prop2: 7
      },
      slots: {
        slot1: '<div></div>'
      },
      events: {
        event1: someSpyProbably
      }
    };
  });

PR #7 shouldn't be merged as-is, it's for exploring this option.

Some notes:

• This requires Vue 2 (see PR #9)
• Since mount() already takes a hash as parm 2, if we name the new API mount, it would be a breaking change. I think that would be OK if we bump the version up to 2.x

What are your thoughts?

from vue-test.

I like the look of that, wonder if it's possible to make it backwards compatible anyway. Let's discuss it on that PR.

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