Fix erroneous react-dom usage in native tests #37921
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This file was removed in the following commit, as it was no longer strictly necessary. b7b62d2#diff-f02069349f238fb47a268bb7fcc03c9768331db18ead0e28d8ecad7bbc05037c However, the removal led to Jest loading the DOM-specific version of the file when mocking Gutenberg modules that depended upon `react-platform.js`. Jest would seemingly load `react-dom` when attempting to auto-mock a module, e.g. `jest.mock( '@wordpress/data/src/components/use-select' );`. The loading of `react-dom` resulted in the following error: ``` TypeError: Cannot use 'in' operator to search for 'WebkitAnimation' in undefined at getVendorPrefixedEventName (node_modules/react-dom/cjs/react-dom.development.js:5011:58) at node_modules/react-dom/cjs/react-dom.development.js:5019:21 at Object.<anonymous> (node_modules/react-dom/cjs/react-dom.development.js:26261:5) at Object.<anonymous> (node_modules/react-dom/index.js:37:20) ``` Reinstating `react-platform.native.js` addresses this issue by ensuring that Jest does not encounter an import of `react-dom`.
This test failed when run in isolation. It would appear it was dependent
upon the `jest.mock('../setup')` found in sibling tests.
After defining a mock for this specific test, it was discovered that the
assertion did not await the asynchronous query found within the test.
The assertion resulted in a false-positive as the returned query
`Promise` technically matches `toBeDefined`. `async`/`await` was added
to ensure the test assertion awaits the query result, as well as fixes
the following related log warning.
```
A worker process has failed to exit gracefully and has been force exited. This is likely caused by tests leaking due to improper teardown. Try running with --detectOpenHandles to find leaks. Active timers can also cause this, ensure that .unref() was called on them.
```
dcalhoun
added
[Type] Automated Testing
dcalhoun
commented
Jan 12, 2022
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| jest.mock( '../setup', () => { | ||
| return { | ||
| __esModule: true, | ||
| default: jest.fn( () => <MockEditor /> ), | ||
| }; | ||
| } ); |
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This test failed when run in isolation, as it appeared dependent upon the mock of ../setup found in sibling tests.
There was a problem hiding this comment.
That's interesting, my idea for this test case was actually to verify that the entire editor is initialized including rendering the initial HTML. In any case, and in order to prevent blocking the PR and Jest upgrade, we could stick with this change and tackle my original idea in a future PR 👍 .
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@fluiddot I leveraged a mock of ../setup as a quick fix to avoid errors from additional dependencies of the ../setup component. I think asserting against a deeper render makes a lot of sense. 👍🏻
| } ); | ||
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| const screen = initGutenberg(); | ||
| const blockList = await waitFor( () => |
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The missing await for the asynchronous query meant the test assertion succeeded as a false-positive.
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Oh sorry for that, I fell into the same trap when adding other integration tests in the past 🤦 . Thanks for catching it 🙇 !
I did an identical test in GB-mobile (reference), so I'll apply the same fix there 🔧 .
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Size Change: 0 B Total Size: 1.13 MB ℹ️ View Unchanged
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7 tasks
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The override for Let's wait for approval from someone that is better suited to confirm it's the right approach. CI is finally green so I like that PR a lot 😄 |
fluiddot
approved these changes
Jan 13, 2022
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LGTM 🎊 !
I've just left a couple of comments but none of them should block the PR.
Reinstate react-platform.native.js file, which was removed in b7b62d2, as it was no longer strictly necessary. However, the removal led to Jest loading the DOM-specific version of the file when mocking Gutenberg modules that depended upon react-platform.js. Jest would seemingly load react-dom when attempting to auto-mock the module, e.g. reusable-block-types-tab.native.js > use-select/index.js > @wordpress/element > react-platform.js. Reinstating react-platform.native.js addresses this issue by ensuring that Jest does not encounter an import of react-dom.
Great catch, I didn't realize about this issue when I did the initialization refactor 🤦 , thanks for spotting it 🙇 . I also noticed that due to this, we included react-dom in the JS bundle (checked in the latest source map), but I guess is innocuous apart from increasing the bundle's size a bit (the size of react-dom.production.min.js is 100kb).
| } ); | ||
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| const screen = initGutenberg(); | ||
| const blockList = await waitFor( () => |
There was a problem hiding this comment.
Oh sorry for that, I fell into the same trap when adding other integration tests in the past 🤦 . Thanks for catching it 🙇 !
I did an identical test in GB-mobile (reference), so I'll apply the same fix there 🔧 .
Comment on lines
+181
to
+186
| jest.mock( '../setup', () => { | ||
| return { | ||
| __esModule: true, | ||
| default: jest.fn( () => <MockEditor /> ), | ||
| }; | ||
| } ); |
There was a problem hiding this comment.
That's interesting, my idea for this test case was actually to verify that the entire editor is initialized including rendering the initial HTML. In any case, and in order to prevent blocking the PR and Jest upgrade, we could stick with this change and tackle my original idea in a future PR 👍 .
gziolo
deleted the
chore/fix-erroneous-react-dom-usage-in-native-tests
branch
gziolo
pushed a commit
that referenced
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Jan 14, 2022
* Reinstate react-platform.native.js file This file was removed in the following commit, as it was no longer strictly necessary. b7b62d2#diff-f02069349f238fb47a268bb7fcc03c9768331db18ead0e28d8ecad7bbc05037c However, the removal led to Jest loading the DOM-specific version of the file when mocking Gutenberg modules that depended upon `react-platform.js`. Jest would seemingly load `react-dom` when attempting to auto-mock a module, e.g. `jest.mock( '@wordpress/data/src/components/use-select' );`. The loading of `react-dom` resulted in the following error: ``` TypeError: Cannot use 'in' operator to search for 'WebkitAnimation' in undefined at getVendorPrefixedEventName (node_modules/react-dom/cjs/react-dom.development.js:5011:58) at node_modules/react-dom/cjs/react-dom.development.js:5019:21 at Object.<anonymous> (node_modules/react-dom/cjs/react-dom.development.js:26261:5) at Object.<anonymous> (node_modules/react-dom/index.js:37:20) ``` Reinstating `react-platform.native.js` addresses this issue by ensuring that Jest does not encounter an import of `react-dom`. * Fix false-positive ReactNativeEditor test This test failed when run in isolation. It would appear it was dependent upon the `jest.mock('../setup')` found in sibling tests. After defining a mock for this specific test, it was discovered that the assertion did not await the asynchronous query found within the test. The assertion resulted in a false-positive as the returned query `Promise` technically matches `toBeDefined`. `async`/`await` was added to ensure the test assertion awaits the query result, as well as fixes the following related log warning. ``` A worker process has failed to exit gracefully and has been force exited. This is likely caused by tests leaking due to improper teardown. Try running with --detectOpenHandles to find leaks. Active timers can also cause this, ensure that .unref() was called on them. ```
gziolo
pushed a commit
that referenced
this pull request
Jan 18, 2022
* Reinstate react-platform.native.js file This file was removed in the following commit, as it was no longer strictly necessary. b7b62d2#diff-f02069349f238fb47a268bb7fcc03c9768331db18ead0e28d8ecad7bbc05037c However, the removal led to Jest loading the DOM-specific version of the file when mocking Gutenberg modules that depended upon `react-platform.js`. Jest would seemingly load `react-dom` when attempting to auto-mock a module, e.g. `jest.mock( '@wordpress/data/src/components/use-select' );`. The loading of `react-dom` resulted in the following error: ``` TypeError: Cannot use 'in' operator to search for 'WebkitAnimation' in undefined at getVendorPrefixedEventName (node_modules/react-dom/cjs/react-dom.development.js:5011:58) at node_modules/react-dom/cjs/react-dom.development.js:5019:21 at Object.<anonymous> (node_modules/react-dom/cjs/react-dom.development.js:26261:5) at Object.<anonymous> (node_modules/react-dom/index.js:37:20) ``` Reinstating `react-platform.native.js` addresses this issue by ensuring that Jest does not encounter an import of `react-dom`. * Fix false-positive ReactNativeEditor test This test failed when run in isolation. It would appear it was dependent upon the `jest.mock('../setup')` found in sibling tests. After defining a mock for this specific test, it was discovered that the assertion did not await the asynchronous query found within the test. The assertion resulted in a false-positive as the returned query `Promise` technically matches `toBeDefined`. `async`/`await` was added to ensure the test assertion awaits the query result, as well as fixes the following related log warning. ``` A worker process has failed to exit gracefully and has been force exited. This is likely caused by tests leaking due to improper teardown. Try running with --detectOpenHandles to find leaks. Active timers can also cause this, ensure that .unref() was called on them. ```
gziolo
added a commit
that referenced
this pull request
Jan 20, 2022
* Testing: Upgrade Jest to v27 * Fix native test timeouts caused by combining fake timers and setImmediate (#37715) * Upgrade to @testing-library/react-native@8.0.0 * Clean up fake timer usage after tests This may be unnecessary, but avoid potential issues where fake timers are unexpectedly used and cause breakages in other tests. * Enable combination of modern fake timers and waitFor Previously, `waitFor` would timeout when `jest.useFakeTimers('modern')` was enabled. The 'modern' version is now the default in Jest 27. The Jest preset from `@testing-library/react-native` provides a workaround for a larger issue in React Native and Jest that mutates the global `Promise` object. https://git.io/JSDZI * Remove global enabling of fake timers Enabling fake timers can have negative consequences with `waitFor`, e.g. causing unexpected timeouts. Enabling it globally is far-reaching and this should likely be enabled within individual tests as needed. * Replace jest-jasmine2 with jest-circus The latter is considered the successor to the former. We seemingly do not depend on anything explicitly provided by `jest-jasmine2` and should likely move on from it. * Switch testing environment from jsdom to node Improves speed of test environment setup and fixes a timeout issue when combining `waitFor` and `jest.useFakeTimers('modern')`. It is not yet exactly pinpointed as to _why_ this fixes the timeout issue. It appears to related to `setImmediate` and `setTimeout`. * Remove setImmediate global for testing environment This may be unnecessary if `testEnvironment: 'node'` is retained. However, most tests are currently broken due to missing DOM APIs. * Polyfill required DOM APIs for testing environment Now that `testEnvironment: 'node'` is utilized for the testing environment, we must mirror the app runtime and polyfill the necessary DOM APIs used in the source. The Enzyme configuration removed conflicts with the switch from `testEnvironment: 'jsdom'` to `testEnvironment: 'node'`. Enzyme depends upon `react-dom`, which introduces far more dependencies upon DOM APIs. Currently, all Enzyme-related tests fail and need to be replaced with `@testing-library/react-native`. * Avoid import of react-dom within native file Importing `react-dom` introduces additional dependencies upon the DOM API and is incompatible with `testEnvironment: 'node'`. The `act` utility is available from `@testing-library/react-native`. * Explicitly toggle fake timers in tests This may not be necessary, but may help avoid unexpected issues from lingering fake timers, e.g. timeout errors while using `waitFor`. * Reinstate legacy Jest timers The Jest preset from `@testing-library/react-native` that fixed support for "modern" timers by modifying the polyfilled the global `Promise` resulted in new failures from within React Native itself. Specifically, core React Native components rely upon `.done` from the `promise` package. `.done` is a non-standard method that does not exist on the global `Promise` used by `@testing-library/react-native`'s preset. * Disable erroneously failing test This previously passing test now fails after upgrading `@testing-library/react-native` due to changes in the library. Setting `pointerEvent` to "box-none" or "none" currently erroneously prevents triggering other events unrelated to pressing on the element, e.g. `onTouch*`, `onLayout`. https://git.io/JSHZt * Reinstate jest-jasmine2 to support done callback The Jest team create jest-circus as the predecessor for jest-jasmine2. The former does not support the `done` callback with async/await, and would appear to have no plans to do so. It would likely benefit us to refactor the one current test using `done` away from it, and embrace `jest-circus` to maintain alignment with Jest core. * Refactor native unit tests away from done callback The Jest team created `jest-circus` as the predecessor for `jest-jasmine2`. The former does not support the `done` callback with async/await, and would appear to have no plans to do so. In order to embrace `jest-circus` and maintain alignment with Jest core, the one test using `done` was refactored to avoid it - https://git.io/JSHWU - https://git.io/JSHWk * Remove Enzyme from Editor tests * Remove Enzyme from Paragraph tests * Remove Enzyme from BlockMover tests * Remove Enzyme from BlockEdit test * Remove Enzyme from LinksUI test * Remove Enzyme from ListEdit tests * Remove Enzyme from Platform tests * Remove Enzyme from BlockTypesTab tests * Remove Enzyme from HTMLTextInput tests * Remove Enzyme from ReusableBlockTab tests * Remove Enzyme from MediaUpload tests * Remove Enzyme from BlockMediaUpdateProgress tests * Remove Enzyme from MediaUploadProgress tests * Fix ReferencEerror in Inserter test Usage of `react-test-renderer` caused the following error. Leveraging `@testing-library/react-native` instead resolved it for an unknown reason. ``` ReferenceError: You are trying to `import` a file after the Jest environment has been torn down. From packages/block-editor/src/components/inserter/test/index.native.js. 468 | style: listStyle, 469 | safeAreaBottomInset, > 470 | scrollEnabled, | ^ 471 | automaticallyAdjustContentInsets: false, 472 | }; 473 | at Object.get PanResponder [as PanResponder] (node_modules/react-native/index.js:251:12) at BottomSheet.render (packages/components/src/mobile/bottom-sheet/index.native.js:470:39) at finishClassComponent (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:8459:31) at updateClassComponent (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:8409:24) at beginWork (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:9990:16) ``` * Fix ReferencEerror in Verse test Usage of `react-test-renderer` caused the following error. Leveraging `@testing-library/react-native` instead resolved it for an unknown reason. ``` ReferenceError: You are trying to `import` a file after the Jest environment has been torn down. From packages/block-editor/src/components/inserter/test/index.native.js. 468 | style: listStyle, 469 | safeAreaBottomInset, > 470 | scrollEnabled, | ^ 471 | automaticallyAdjustContentInsets: false, 472 | }; 473 | at Object.get PanResponder [as PanResponder] (node_modules/react-native/index.js:251:12) at BottomSheet.render (packages/components/src/mobile/bottom-sheet/index.native.js:470:39) at finishClassComponent (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:8459:31) at updateClassComponent (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:8409:24) at beginWork (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:9990:16) ``` * Fix ReferencEerror in Audio test Usage of `react-test-renderer` caused the following error. Leveraging `@testing-library/react-native` instead resolved it for an unknown reason. ``` ReferenceError: You are trying to `import` a file after the Jest environment has been torn down. From packages/block-editor/src/components/inserter/test/index.native.js. 468 | style: listStyle, 469 | safeAreaBottomInset, > 470 | scrollEnabled, | ^ 471 | automaticallyAdjustContentInsets: false, 472 | }; 473 | at Object.get PanResponder [as PanResponder] (node_modules/react-native/index.js:251:12) at BottomSheet.render (packages/components/src/mobile/bottom-sheet/index.native.js:470:39) at finishClassComponent (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:8459:31) at updateClassComponent (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:8409:24) at beginWork (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:9990:16) ``` * Fix ReferencEerror in File test Usage of `react-test-renderer` caused the following error. Leveraging `@testing-library/react-native` instead resolved it for an unknown reason. ``` ReferenceError: You are trying to `import` a file after the Jest environment has been torn down. From packages/block-editor/src/components/inserter/test/index.native.js. 468 | style: listStyle, 469 | safeAreaBottomInset, > 470 | scrollEnabled, | ^ 471 | automaticallyAdjustContentInsets: false, 472 | }; 473 | at Object.get PanResponder [as PanResponder] (node_modules/react-native/index.js:251:12) at BottomSheet.render (packages/components/src/mobile/bottom-sheet/index.native.js:470:39) at finishClassComponent (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:8459:31) at updateClassComponent (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:8409:24) at beginWork (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:9990:16) ``` * Fix ReferencEerror in Search test Usage of `react-test-renderer` caused the following error. Leveraging `@testing-library/react-native` instead resolved it for an unknown reason. ``` ReferenceError: You are trying to `import` a file after the Jest environment has been torn down. From packages/block-editor/src/components/inserter/test/index.native.js. 468 | style: listStyle, 469 | safeAreaBottomInset, > 470 | scrollEnabled, | ^ 471 | automaticallyAdjustContentInsets: false, 472 | }; 473 | at Object.get PanResponder [as PanResponder] (node_modules/react-native/index.js:251:12) at BottomSheet.render (packages/components/src/mobile/bottom-sheet/index.native.js:470:39) at finishClassComponent (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:8459:31) at updateClassComponent (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:8409:24) at beginWork (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:9990:16) ``` * Fix ReferencEerror in Missing test Usage of `react-test-renderer` caused the following error. Leveraging `@testing-library/react-native` instead resolved it for an unknown reason. ``` ReferenceError: You are trying to `import` a file after the Jest environment has been torn down. From packages/block-editor/src/components/inserter/test/index.native.js. 468 | style: listStyle, 469 | safeAreaBottomInset, > 470 | scrollEnabled, | ^ 471 | automaticallyAdjustContentInsets: false, 472 | }; 473 | at Object.get PanResponder [as PanResponder] (node_modules/react-native/index.js:251:12) at BottomSheet.render (packages/components/src/mobile/bottom-sheet/index.native.js:470:39) at finishClassComponent (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:8459:31) at updateClassComponent (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:8409:24) at beginWork (node_modules/react-test-renderer/cjs/react-test-renderer.development.js:9990:16) ``` * Upgrade to @testing-library/react-native@9.0.0 * Add assertions to block type tab tests Improve test clarity with explicit expect assertions. Co-authored-by: Carlos Garcia <fluiddot@gmail.com> * Remove unnecessary abstraction The switch away from Enzyme reduced this abstraction to a single line, so it provides less value now. * Consistently assert media block update progress spinner removal This increases consistency amongst the tests, as most already include this assertion. * Update MediaUpload test to select 'Choose from device' option This selection better aligns with the test description. * Remove duplicative matchMedia global definition The test environment now imports the globals setup file used by the app runtime. That file includes a `matchMedia` global definition as well. * Add assertions to LinkSettings tests Improve test clarity with explicit expect assertions. * Removed shallow renderer usage in tests Shallow rendering components is generally considered a non-optimal approach to testing React components by the React community. This replaces `shallow` with `render` to further test integration of the subject components. * Remove unused import The `React` import was utilized by the now removed `shallow` render implementation. * Remove unnecessary top-level beforeAll usage Jest runs each test file independently, so top-level code will not impact other test files. Since the `(before|after)All` usage in code changed is all top-level, and not within a `describe`, it is superfluous. Co-authored-by: Carlos Garcia <fluiddot@gmail.com> * Fix erroneous react-dom usage in native tests (#37921) * Reinstate react-platform.native.js file This file was removed in the following commit, as it was no longer strictly necessary. b7b62d2#diff-f02069349f238fb47a268bb7fcc03c9768331db18ead0e28d8ecad7bbc05037c However, the removal led to Jest loading the DOM-specific version of the file when mocking Gutenberg modules that depended upon `react-platform.js`. Jest would seemingly load `react-dom` when attempting to auto-mock a module, e.g. `jest.mock( '@wordpress/data/src/components/use-select' );`. The loading of `react-dom` resulted in the following error: ``` TypeError: Cannot use 'in' operator to search for 'WebkitAnimation' in undefined at getVendorPrefixedEventName (node_modules/react-dom/cjs/react-dom.development.js:5011:58) at node_modules/react-dom/cjs/react-dom.development.js:5019:21 at Object.<anonymous> (node_modules/react-dom/cjs/react-dom.development.js:26261:5) at Object.<anonymous> (node_modules/react-dom/index.js:37:20) ``` Reinstating `react-platform.native.js` addresses this issue by ensuring that Jest does not encounter an import of `react-dom`. * Fix false-positive ReactNativeEditor test This test failed when run in isolation. It would appear it was dependent upon the `jest.mock('../setup')` found in sibling tests. After defining a mock for this specific test, it was discovered that the assertion did not await the asynchronous query found within the test. The assertion resulted in a false-positive as the returned query `Promise` technically matches `toBeDefined`. `async`/`await` was added to ensure the test assertion awaits the query result, as well as fixes the following related log warning. ``` A worker process has failed to exit gracefully and has been force exited. This is likely caused by tests leaking due to improper teardown. Try running with --detectOpenHandles to find leaks. Active timers can also cause this, ensure that .unref() was called on them. ``` * [RNMobile] Fix `act` warnings that might be triggered after test finishes (#38052) * Fix act warnings after test finishes This is a workaround for addressing the act warnings that might caused by store updates executed after the test finishes. * Update comment of setImmediate workaround Co-authored-by: David Calhoun <438664+dcalhoun@users.noreply.github.com> * Unmount editor when test finish * Update initialize editor helper The function is now synchronous as we don't have to wait for any element. * Update tests that use initialize editor * Fix act warnings from store resolvers with fake timers (#38077) * Leverage fake timers to resolve store resolvers During editor initialization, asynchronous store resolvers rely upon `setTimeout` to run at the end of the current JavaScript block execution. In order to prevent "act" warnings triggered by updates to the React tree, we leverage fake timers to manually tick and await the resolution of the current block execution before proceeding. * Update RichText test `initializeEditor` usage The refactor of `initializeEditor` to leverage fake timers means this test no longer needs to `await` asynchronous work or manuall `unmount` its subject component. * Refactor usage of `initializeEditor` in tests Now that `initializeEditor` leverages fake timers to resolve asynchronous store resolvers, the tests no longer need to await a resolution of `initializeEditor`. * Fix `act` warnings in Image edit test Retrieving text from the clipboard is an asynchronous action. The component updated React state once the clipboard resolved. This resulted in a state update triggering an `act` warning. Because there is no visible change to the rendered output, e.g. updated text or UI, we must await the resolution of the clipboard promise itself. Co-authored-by: David Calhoun <438664+dcalhoun@users.noreply.github.com> Co-authored-by: David Calhoun <438664+dcalhoun@users.noreply.github.com> Co-authored-by: Carlos Garcia <fluiddot@gmail.com>
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Description
Reinstate
react-platform.native.jsfile, which was removed in b7b62d2, as it was no longer strictly necessary. However, the removal led to Jest loading the DOM-specific version of the file when mocking Gutenberg modules that depended uponreact-platform.js. Jest would seemingly loadreact-domwhen attempting to auto-mock the module, e.g.reusable-block-types-tab.native.js>use-select/index.js>@wordpress/element>react-platform.js. Reinstatingreact-platform.native.jsaddresses this issue by ensuring that Jest does not encounter an import ofreact-dom.react-dom Error Details
Additionally, these changes fix a false-positive
ReactNativeEditortest. This test failed when run in isolation. It would appear it was dependent upon thejest.mock('../setup')found in sibling tests.After defining a mock for this specific test, it was discovered that the assertion did not await the asynchronous query found within the test. The assertion resulted in a false-positive as the returned query
Promisetechnically matchestoBeDefined.async/awaitwas added to ensure the test assertion awaits the query result, as well as fixes the following related log warning.Async Test Warning
How has this been tested?
Screenshots
n/a
Types of changes
Bug fix
Checklist:
*.native.jsfiles for terms that need renaming or removal).