I use create-react-app to create an react project, so I have // package.json "dependencies": { "@testing-library/jest-dom": "^5.16.5", "@testing-library/react": "^13.4.0", "@testing-library/user-event": "^13.5.0", ... }, first thing I don't understand is, why those @testing-library packages are in dependencies not devDependencies? why we…
I am trying to test a simple user click button where the counter will increase from 0 to 1. Here is my counter button import { useState } from "react"; export const Counter = () => { const [counter, setCounter]…
Is there a way to mock localStorage with Jest? I have tried many answers from this question however, none seemed to work on typescript as I keep getting: "ReferenceError: localStorage is not defined" I also tried to make my own…
I have an element with an onClick handler which may be disabled by adding pointer-events: none to parent (parent disables children click). Now I want to test that my child is not clickable, how can I do this? Using userEvent.click…
I have a system providing a members only section. I'd like to test if, when an unauthorized user opens a URL from the member section, they get forwarded to the login page. In my test I render the whole application.…
I have a React Native (non-Expo) app with a screen for reading QR/barcodes. I am using React Native 0.71.8 and react-native-vision-camera, with vision-camera-code-scanner for the frame processor. As part of the flow for accessing a device camera, the app must…
I have a react native component OrdersScreen which I am not able to test because the component gets updated when setState : setRenderLoader(false) is called in React.useEffect() hook. const OrdersScreen = ({ navigation }) => { let [renderLoader, setRenderLoader] =…
I am attempting to unit test 2 exported helper functions that both call useContext on my default context value, however I can't seem to get it working after a lot of looking online. export const func1 = () => {…
I was trying to use jest for testing my module files and got encountered to error, I looked for online help, tried running test by changing it to a cjs file but wasn't successful. The error I encountered: FAIL tests/sum.test.cjs…
I have a react native expo app. I am currently writing tests for said app and there is a problem. I am using app.config.ts to export some variables with the extra property. In my file i am reading the property…