fireEvent or some other utility for RN specific events

[ajsmth]

Describe the feature you'd like:

I want to be able to fire some RN specific events -- namely Linking and BackButton. In the past I've mocked these out with an imperative API similar to fireEvent, I thought it would make a nice addition to the library, as I'm not sure it's possible at the moment

Suggested implementation:

Something to the effect of fireEvent.backButton() and fireEvent.linkChanged('url') would be the desired end result

[bcarroll22]

Sorry I took a while to think about this... I'd be open to seeing a PR to implement some of these mocks, but I think we'd have to be really careful about which ones we make to be sure we're sticking to the guiding principles of testing library and not mocking things that enable testing implementation details.

If you'd like, you can open a RFC PR for the feature, I'd love to see it! Otherwise I'm going to go ahead and close this for housekeeping purposes, but note that if anyone wants to give this a try I'm open to it. I think the natural place to include it is in the jest preset.