callstack / callstack/react-native-paper
Exception is thrown during Jest test when using Paper components.
- Langage dominant
- TypeScript
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Description
### Current behaviour
Using the library's components results in exception being thrown when running tests with Jest.
```
C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:2611
throw error;
^
TypeError: Cannot read properties of undefined (reading 'addEventListener')
at addEventListener (C:\ReactNativePaperJestTest\node_modules\react-native-paper\src\utils\addEventListener.tsx:19:31)
at C:\ReactNativePaperJestTest\node_modules\react-native-paper\src\core\PaperProvider.tsx:47:38
at commitHookEffectListMount (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:12999:26)
at commitPassiveMountOnFiber (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:14422:11)
at commitPassiveMountEffects_complete (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:14382:9)
at commitPassiveMountEffects_begin (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:14369:7)
at commitPassiveMountEffects (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:14357:3)
at flushPassiveEffectsImpl (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:16248:3)
at flushPassiveEffects (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:16197:14)
at C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:16012:9
at workLoop (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\node_modules\scheduler\cjs\scheduler.development.js:266:34)
at flushWork (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\node_modules\scheduler\cjs\scheduler.development.js:239:14)
at Immediate.performWorkUntilDeadline (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\node_modules\scheduler\cjs\scheduler.development.js:533:21)
at processImmediate (node:internal/timers:478:21)
Node.js v20.12.0
```
### Expected behaviour
The test should run with no exceptions.
### How to reproduce?
1. Create new app with `npx react-native@latest init ReactNativePaperJestTest`
2. Go through the library's setup, as per [the docs](https://callstack.github.io/react-native-paper/docs/guides/getting-started/)
3. Add the `PaperProvider` component to the app
4. Run the tests with `npm test`
Alternatively, check out this [GitHub repo](https://github.com/rafabulsing/react-native-paper-jest-test).
### What have you tried so far?
Adding the following to `jest.config.js`:
```
transformIgnorePatterns: [
'node_modules/(?!((jest-)?react-native|@react-native(-community)?|react-native-paper)/)',
],
```
causes the error to change a bit:
```
C:\ReactNativePaperJestTest\node_modules\flow-parser\flow_parser.js:818
throw a}function
^
TypeError: Cannot read properties of undefined (reading 'addEventListener')
at addEventListener (C:\ReactNativePaperJestTest\node_modules\react-native-paper\src\utils\addEventListener.tsx:20:19)
at C:\ReactNativePaperJestTest\node_modules\react-native-paper\src\core\PaperProvider.tsx:100:39
at commitHookEffectListMount (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:12999:26)
at commitPassiveMountOnFiber (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:14422:11)
at commitPassiveMountEffects_complete (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:14382:9)
at commitPassiveMountEffects_begin (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:14369:7)
at commitPassiveMountEffects (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:14357:3)
at flushPassiveEffectsImpl (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:16248:3)
at flushPassiveEffects (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:16197:14)
at C:\ReactNativePaperJestTest\node_modules\react-test-renderer\cjs\react-test-renderer.development.js:16012:9
at workLoop (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\node_modules\scheduler\cjs\scheduler.development.js:266:34)
at flushWork (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\node_modules\scheduler\cjs\scheduler.development.js:239:14)
at Immediate.performWorkUntilDeadline (C:\ReactNativePaperJestTest\node_modules\react-test-renderer\node_modules\scheduler\cjs\scheduler.development.js:533:21)
at processImmediate (node:internal/timers:478:21)
Node.js v20.12.0
```
### Your Environment
| software | version
| --------------------- | -------
| react-native | 0.73.6
| react-native-paper | 5.12.3
| node | 20.12.0
| npm | 10.5.0
Guide de contribution
Ouvrir le guide de contribution
Piste de recherche
Start with src/utils/addEventListener.tsx and the PaperProvider call in src/core/PaperProvider.tsx, then reproduce the failure using the supplied React Native app steps or linked test repository. Check how the Jest environment provides the event target and verify that rendering PaperProvider with npm test completes without an exception.
Rédigé par le modèle d'indexation à partir du texte de l'issue.
Évaluation
- Stack technique
- react-native, typescript
- Domaine
- mobile, testing
- Type d'issue
- Bug
- Difficulté
- 3/5
- Temps estimé
- 1-2 jours
- Activité
- À l'abandon
- Clarté
- Plutôt claire
- Accessibilité débutants
- 35/100