triggering cancelable event causes error

[sjahns]

Version

1.0.0-beta.32

Reproduction link

https://github.com/sjahns/vue-test-utils-issue-event-cancelable

Steps to reproduce

npm install

npm run test:unit

What is expected?

It should not cause an error

What is actually happening?

It does end in an error

---

This happens due to createDOMEvent() setting all given options on the event object. But cancelable is read only.

To me it looks like the event is created correctly with cancelable:false but createDOMEvent() will also try to set the property.

I found this while testing a component which does:

if(event.cancelable) {
event.preventDefault();
}

[lmiller1990]

I (think) we have a PR in progress for this #1460

[dobromir-hristov]

Closing as #1460 is merged.