native-testing-library | Simple and complete React Native testing utilities | Testing library
kandi X-RAY | native-testing-library Summary
kandi X-RAY | native-testing-library Summary
Simple and complete React Native testing utilities that encourage good testing practices. Read The Docs | Edit the docs.
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Top functions reviewed by kandi - BETA
- Promisify action handler
- Waits until the element has been removed
- Traverses the element and returns a proxy for each element
- Mock component
- Serializes the children into a JSON representation .
- Render ui
- Wait until a callback function returns true
- Find list by trait role
- Fuzzy matching text against a node
- Determines whether a text node matches a regex .
native-testing-library Key Features
native-testing-library Examples and Code Snippets
Community Discussions
Trending Discussions on native-testing-library
QUESTION
I have this test with Jest and react-native-testing-library
...ANSWER
Answered 2022-Jan-14 at 09:17Changing Jest preset from "react-native" to "@testing-library/react-native" solved the problem.
QUESTION
I'm new to unit testing and I'm trying to render a component to learn more about the library.
Edit: I'm trying to follow this guide.
Component
...ANSWER
Answered 2021-Mar-08 at 09:00Here is the working solution, it works if I access by testID.
QUESTION
I'm trying to get an element by its placeholder text but react-native-testing-library keeps throwing me the same errors:
...ANSWER
Answered 2020-Dec-30 at 21:37getByPlaceholderText returns you the first matching node. And actually, it succeeds in doing so. The node is represented as an object and your test says
QUESTION
I am learning TDD and trying to implement async storage tests by following the guides from https://react-native-async-storage.github.io/async-storage/docs/advanced/jest/ I have followed the installation and currently trying to mock async storage in my first test.
I created a simple test.
...ANSWER
Answered 2020-Dec-08 at 04:13I think you have misunderstood the documentation. asyncOperationOnAsyncStorage is just an example method that is defined in the documentation, you will have to replace asyncOperationOnAsyncStorage with the method that you have some async storage operation.
So essentially asyncOperationOnAsyncStorage will be the method that will contain the async storage logic.
QUESTION
The warning doesn't happen during debug or release mode builds but when testing App.js:
App.js
...ANSWER
Answered 2020-Sep-07 at 17:17AppNavigator shouldn't return null because this makes the mock useless to test App.
In order to receive a ref, AppNavigator should be class or forwardRef component. createAppContainer arguments can be optionally represented in element hierarchy in order to be testable by a snapshot:
QUESTION
I followed the chosen answer in this thread, but I couldn't figure it out. I want to test the value of a TextInput component so I could check the length of it, what is the proper way to achieve this today?
My component looks something like this:
ANSWER
Answered 2020-Jul-13 at 15:33I think what you're trying to do is to limit the initial text passed in props to the maxLength of characters passed.
in your component useEffect() ,
instead of:
QUESTION
I'm using react-native-testing-library and after upgrading react-navigation from 4 to 5, I followed these instructions: https://callstack.github.io/react-native-testing-library/docs/react-navigation to upgrade most of my test suite.
So far so good. The crux here is basically to wrap your tests in a NavigationContainer so my components have access to those hooks that previously came from react-navigation-hooks.
This works fine when my tests are synchronous, but as soon as I add the async keyword to the test function, I get the following warning:
ANSWER
Answered 2020-May-11 at 13:20My recommendation after calling render from react-native-testing-library for components that do async work, useEffect (acting as componentDidMount), changing state, etc:
QUESTION
I am using react-native-testing-library. My component is quite simple:
...ANSWER
Answered 2020-May-08 at 13:43If it's correctly spying you can try this. I encourage you to use the testID props for the components
QUESTION
I am not able to test react native App using enzyme, jest, and react-native-testing-library.
with just rendring test
...ANSWER
Answered 2020-Mar-18 at 01:52Try to add this to your package.json:
QUESTION
After spending two days in researching, I've finally run out of ideas.
The problem is a component that uses withNavigation from React-Navigation.
When I run Jest, it complains about an unexpected token export (React-Navigation), pointing withNavigation.
Since there is the same problem with other third-party libraries (such as Native Base), I concluded there must be a problem with transformIgnorePatterns. For example, I tried this solution among sooo many others, that are more or less similar. I also tried to adjust babel.config, as suggested in another post at GitHub. Nothing works! Maybe someone has any idea? Please not that I use TypeScript.
Here is the Jest part if my package.json:
ANSWER
Answered 2020-Mar-04 at 12:49This works for me:
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