Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/50257
Changelog: [internal]
## Context
We have some tests that make sure certain objects are deallocated/released at the right times, but those are generally hard to get right. The main reason is that WeakRefs semantics are tied to the tasks and microtasks in JS, but we handle them both inside and outside the Event Loop in Fantom tests.
This leads to some surprising behavior where things we expect to have been deallocated weren't because of some innocent looking code.
## Changes
This introduces a safety mechanism in Fantom to enforce that WeakRefs are always dereferenced inside the Event Loop, by patching the method in `WeakRef` and checking if we're in the Event Loop using Fantom APIs.
It also updates the existing test using WeakRefs to fix the new errors thrown by this patch, and to serve as a "good example" on how to use WeakRefs to do memory testing.
Reviewed By: yungsters
Differential Revision: D71815397
fbshipit-source-id: 8faab1898d9112ec365b41867179abb8b251e337
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/49101
Changelog: [internal]
We can move this out of the deprecated directory. Also added a `.npmignore` entry so this won't be published to npm with the package.
Reviewed By: lenaic
Differential Revision: D68896208
fbshipit-source-id: ec85236aeeabdc9abcd870f0f4c1322eeb3cc659
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/49032
Add a native API to validate the RuntimeScheduler has no pending tasks, and automatically validate after every test that there's no pending tasks left to execute.
Changelog: [Internal]
Reviewed By: sammy-SC
Differential Revision: D68797481
fbshipit-source-id: dbbef894a57bd29eb5a033ac8aaeedef770dcba2
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/48369
Changelog: [internal]
This improves logs in Fantom by preserving the original log levels. It's also in preparation for adding support for log streaming in tests.
Reviewed By: javache
Differential Revision: D67600616
fbshipit-source-id: 1c4997d5e836a78327f33092527543fe025c90c6
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/48291
Changelog: [internal]
`react-native-fantom` was added to `.eslintignore` when we upgraded to React 19 because we wanted to reduce the amount of warnings to ease the migration.
This re-enables ESLint for that directory and removes the warnings.
Reviewed By: cipolleschi
Differential Revision: D67283104
fbshipit-source-id: 4ec2363ceaff3cd7bd6e5d70e9588c3dd22d7d85
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/48029
Changelog: [Internal]
Adding snapshot support for rendered output only for now.
This will only work if snapshot is created beforehand by hand.
# Next steps
* Create snapshot when no prior snapshot is available
* Pass and update if instructed
Reviewed By: christophpurrer
Differential Revision: D66601387
fbshipit-source-id: fe528cded43c5ba36d314bd9af8e3fb84b98ac3e
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/48143
Changelog: [internal]
Just a small cleanup to move `jest/integration/*` to `packages/react-native-fantom`, so everything related to Fantom (config, runner, runtime, etc.) is in the same directory.
Reviewed By: javache
Differential Revision: D66874763
fbshipit-source-id: 8b87d7320c7704f7ce6cd58761508193784f5ce2
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