ReactCompositeComponent: injectEnvironment() can only be called once.

[clozr]

I encountered this error when using react-test-renderer.
Any idea how it can be fixed?

[clozr]

I figured that your package is set to use enzyme instead of react-test-renderer.

[doanndd]

FYI, I used react-native-mock with react-addons-test-utils from file env.js. If you want to use with react-test-renderer, you can add this code jest.mock('react-addons-test-utils'); to env.js.

More about this error, you can find in jestjs/jest#1353

Thank you.

[clozr]

You are using locally cached version of react-native-mock, which doesn't work with latest react-native. I changed the mock in env.js
jest.setMock('react-native', require('react-native-mock/src/react-native'));

Which makes it work.

[doanndd]

I updated to latest react-native-mock version. You should rerun npm i react-native-babel-jest.
Thanks!

[clozr]

Cool Thanks!
I think in your examples you should include an example of snapshot testing using enzyme-to-json. Someone looking to use snapshot testing will know that they don't need react-test-renderer.

[doanndd]

Thank you,
I'm doing it now.