Vue Component cannot be passed to mount

[No9]

The app is broken as it won't get versions at the min so I am submitting direct.

Version

1.0.0-beta.16
node v8.10.0

Reproduction link

https://github.com/No9/vue-test-utils-issue

Steps to reproduce

See repo

> git clone https://github.com/No9/vue-test-utils-issue.git
> cd vue-test-utils-issue
> npm install
> npm test

What is expected?

Passing a Vue Component to vue-test-utils.mount should work as per
#329 (comment)

What is actually happening?

An error is thrown that wrapper.html() is undefined

---

I may have misunderstood the use of the wrapper and the library here and unpacking the vue as per the first passing test is expected behavior.

[vue-bot]

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