mount: name slots using text are ignored

[shannonarcher]

Version

1.0.0-beta.25

Reproduction link

https://github.com/shannonarcher/vue-test-utils-bug

Steps to reproduce

git clone git@github.com:shannonarcher/vue-test-utils-bug.git &&
cd vue-test-utils-bug &&
npm i && 
npm run test:unit

What is expected?

According to the docs for the options object when mounting:

Slot

... The value can be either a component, an array of components, or a template string, or text.

When providing a slot containing plain text it should appear in the mounted component as a prop of $slots and replace corresponding named slots content.

What is actually happening?

Plain text slots are ignored when mounting the component using vue-test-utils.

---

Wrapping any text in a tag will fix this issue however that isn't indicated clearly in the docs and it fails silently.

[shannonarcher]

Duplicate of #967