Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/47076
The Jest unit tests for `useMergeRefs` were incorrectly implemented, leading to missing expected values. The root cause is that the test helpers were rendering to new roots instead of reusing the same root.
This refactors the test helpers to be simpler and easier to debug, and then fixes the bug described above.
Changelog:
[Internal]
Reviewed By: lunaleaps
Differential Revision: D64498741
fbshipit-source-id: f0dd65f89e0c13721e83a8e38a699bc688812a0e
Tim Yung
fa0358a058