Unable to trigger keydown event with custom keyCode

[igor-nabebin]

Version

1.0.0-beta.29

Reproduction link

https://github.com/igor-nabebin/vue-test-utils-jest-example

Steps to reproduce

1. Clone repo
2. Run "npm install"
3. Run "npm run test"

What is expected?

A keydown event with keyCode = 65 is fired, test passed.

What is actually happening?

A keydown event with keyCode = 0 is fired, test failed.

[andrewvasilchuk]

Encountered the same problem.