Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/42826
yungsters debugged the failing test library import and found that we don't yet support package exports. Switching this to main with an index file allows us to import the library in other places.
Changelog: [internal]
Reviewed By: yungsters
Differential Revision: D53240712
fbshipit-source-id: 046a7d1678cbca181e4a4de607a9c0e7490ef047
Summary:
The goal is to provide testing utilities that use Fabric and concurrent rendering by default to support the new RN architecture. Currently most testing is done through ReactTestRenderer, which is an overly-simplified rendering environment, non-concurrent by default, and over exposes internals. A dedicated RN environment in JS can allow for more realistic test execution.
This is the initial commit to create the `react-native-test-renderer` package. It currently only offers a simple toJSON() method on the root of a test, which is used for snapshot unit tests. We will be iterating here to add a query interface, event handling, and more.
## Changelog:
[GENERAL] [ADDED] - Added react-native-test-renderer package for Fabric rendered integration tests
Pull Request resolved: https://github.com/facebook/react-native/pull/42644
Test Plan:
```
$> cd packages/react-native-test-renderer
$> yarn jest
```
Output:
```
PASS src/renderer/__tests__/render-test.js
render
toJSON
✓ returns expected JSON output based on renderer component (7 ms)
Test Suites: 1 passed, 1 total
1 passed, 1 total
Snapshots: 1 passed, 1 total
Time: 2.869 s
```
Reviewed By: yungsters
Differential Revision: D53183101
Pulled By: jackpope
fbshipit-source-id: 8e29ba35f55f6c4eb2613ab106bc669d72f33d1d
React Native Bot
Nicola Corti
Riccardo Cipolleschi
Alex Hunt
Jack Pope