react-native-testing-library Questions

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Error I'm getting Anytime I run npm test: FAIL ./App.test.js ● Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest ca...

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I'm new to unit testing and I'm trying to render a component to learn more about the library. I'm trying to follow this guide. Component <TouchableOpacity style={style} onPress={onPress} acce...

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I'm using ignite to create an expo react native app. I'm using this guide https://ignitecookbook.com/docs/recipes/GeneratorComponentTests to create component test files Here is the first test file ...

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I'm trying to test my LoginScreen with Jest and Typescript. I use redux and redux-persist for storage and have set the storage up to use AsyncStorage as part of the config. I suspect that redux-per...
Carolanncarole asked 18/5, 2020 at 18:40

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I am using react-native-testing-library to test my react-native component. I have a component (for the purpose of this post, it has been over simplified): export const ComponentUnderTest = () =&gt...
Schizogony asked 1/12, 2019 at 23:57

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How do I check that this TextInput component is focused? I know how to do it on the web: const input = getByPlaceholderText("placeholder"); expect(document.activeElement).toEqual(input); ...

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In my new React Native app, I want to add some Jest tests. One component renders a background image, which is located directly in the project in assets folder. Now I stumbled about how to test if t...
Asis asked 3/3, 2020 at 14:34

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How can I assert that a button is disabled in React Native Testing Library? I would imagine something like: expect(getByRole('button')).toBeDisabled() but RNTL doesn't provide toBeDisabled asserti...
Peccant asked 5/11, 2020 at 11:33

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I'm trying to use jest-native as extra matchers and i'm having an installation problem i think ... I am on a react-native ts app with expo and here are my versions: expo:"~39.0.0" @testi...

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I use @testing-library/react-native to test my RN app. When I run yarn test, following error occurs. @testing-library/react-native should have "jest-preset.js" or "jest-preset.json&q...
Spradling asked 15/11, 2020 at 19:13

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Simply test case: Want to see if a given element is focused. To check if an element is focused on a react web app with RTL and jest, you have two easy options available to you: You can check if th...

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I'm having a bit of a hard time understanding how to test my modal component. I'm using the react-native-modals package and @testing-library/react-native with Jest. My component is a modal that pop...
Withrow asked 13/4, 2020 at 19:23

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Below test is passing but I get the following warning twice and I don't know why. Could someone help me to figure it out? console.error Warning: You called act(async () => ...) without await. ...
Attach asked 22/11, 2020 at 9:17

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I have a basic react-native/expo template app. I have added jest-expo and react-test-renderer in the dev dependencies, and also have updated package.json like documented in the expo docs for testin...
Hilariahilario asked 8/6, 2021 at 14:33

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I have the following problem: I need to test if a function is being called on my test, but to test it properly I need to press enter or submit the form, and it doesn't seem to work as intended. I'v...

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I am really stuck on this in the project I am working on, and all the answers I have found seem to be so simple but they haven't worked for me. Perhaps I don't really understand what a mock is, and...
Yevette asked 18/6, 2020 at 17:1
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