Summary:
This diff upgrades Jest to the latest version which fixes a bunch of issues with snapshots (therefore allowing me to enable the Pressable-test again). Note that this also affects Metro and various other tooling as they all depend on packages like `jest-worker`, `jest-haste-map` etc.
Breaking changes: https://github.com/facebook/jest/blob/master/CHANGELOG.md
This diff increases node_modules by 3 MiB, primarily because it causes more duplicates of `source-map` (0.8 MiB for each copy) and packages like `chalk` 3.x (vs 2.x). The base install was 15 MiB bigger and I reduced it to this size by playing around with various manual yarn.lock optimizations. However, D21085929 reduces node_modules by 11 MiB and the Babel upgrade reduced node_modules by 13 MiB. I will subsequently work on reducing the size through other packages as well and I'm working with the Jest folks to get rid of superfluous TypeScript stuff for Jest 26.
Other changes in this diff:
* Fixed Pressable-test
* Blackhole node-notifier: It's large and we don't need it, and also the license may be problematic, see: https://github.com/facebook/jest/pull/8918
* Updated jest-junit (not a Jest package) but blackholed it internally because it is only used for open source CI.
* Updated some API calls we use from Jest to account for breaking changes
* Made two absolutely egrigious changes to existing product code tests to make them still pass as our match of async/await, fake timers and then/promise using `setImmediate` is tripping up `regenerator` with `Generator is already run` errors in Jest 25. These tests should probably be rewritten.
* Locked everything to the same `resolve` version that we were already using, otherwise it was somehow pulling in 1.16 even though nothing internally uses it.
Changelog: [General] Update Jest
Reviewed By: rickhanlonii
Differential Revision: D21064825
fbshipit-source-id: d0011a51355089456718edd84ea0af21fd923a58
Summary:
Per a conversation with TheSavior, in #24538, this adds snapshot tests for all components whose mocks will be addressed in that PR. Shallow and deep snapshots are included.
[General] [Added] - Snapshots
Pull Request resolved: https://github.com/facebook/react-native/pull/24554
Differential Revision: D15062197
Pulled By: cpojer
fbshipit-source-id: 70ddbaa5e6d1d2c0fd1130ab04c458d9c49d0ee8
Summary:
Renamed test files to match `-test.js`, so people can add test helpers without blacklisting.
Codemod code: P60365841
Script executed:
```
cd xplat/js
./scripts/node/node rename-script.js > result.txt
```
Reviewed By: mjesun
Differential Revision: D13185673
fbshipit-source-id: 87451635aa538c2c1d1886e75574d0e5c889596e
Summary:
This change only affects tests run with Jest. `require('/images/image1.png')` will be replaced with
```
Object {
"testUri": "relative/path/to/images/image1.png",
}
```
in the Jest snapshot instead of always being 1 returned by RelativeImageStub. This change makes it possible to test conditional asset loading in components.
The problem with this change is that it will probably break a lot of existing snapshots, but that should be easily fixed when a project updates to a new version of React Native by running `jest -u` to update all snapshots.
A component can have conditional asset loading based on its props, this logic would be nice to test with Jest snapshots. This problem has been discussed in https://github.com/facebook/jest/issues/2838.
* **Who does this affect**: Everyone using `Image` in Jest snapshots
* **How to migrate**: Running `jest -u` will update the snapshots, the snapshots should be reviewed that they are correct.
* **Why make this breaking change**: It enables testing of conditional asset loading.
* **Severity (number of people affected x effort)**: Low.
Closes https://github.com/facebook/react-native/pull/13319
Reviewed By: rafeca
Differential Revision: D5708180
Pulled By: mjesun
fbshipit-source-id: 16ac42004d597db08545a21d4fffe95c5ee7e21f
Paige Sun
Christoph Nakazawa
Brandon Carroll
Rubén Norte
Miguel Jimenez Esun
Martin Yrjölä