Preact: Support react-test-renderer

[jackyef]

Continuing this issue from preact-compat repo.

Currently, some testing utilities libraries rely on react-test-renderer, for example @testing-library/react-hooks. This library is used to test React hooks in a React application. Having an equivalent of react-test-renderer would help in migrating an existing React app to Preact.

[IgnusG]

I had the same issue for testing hooks so I ported this library https://github.com/andrew-w-ross/test-react-hooks to preact. You can find it here https://www.npmjs.com/package/test-preact-hooks

It's still very much alpha and might break like glass so please use at your own risk and leave an issue report if you run into problems.

[CarsonMcKinstry]

Hello!

We had the same issue as well. So we ported the official @testing-library/react-hooks package :D

https://github.com/trivago/preact-hooks-testing-library

Would love some feedback as well. It should be _mostly_ at feature parity with the react hooks version, but that isn't 100% guaranteed.

[developit]

I wonder if we can close this issue out now that @testing-library/preact-hooks exists?