I am new to react-testing-library / jest and attempting to write a test to see if the navigation of routes (using react-router-dom) is performed correctly.  So far I have been following the README and this tutorial on how to use.  One of my component...
I'm trying to mock axios.create() because I'm using its instance across the app and obviously need all of its implementation which is destroyed by the mock, thus cannot get the result of the get, post method properly.  This is how the code lo...
I want to test my Expo React Native app with Jest and @testing-lib/react-native.  I have the following set up in my package.json.  "jest": {     "preset": "jest-expo",     "moduleDirectories": [       "node_modules...
I want to change the value of material UI TextField in react testing library. I already set up the data-testid. Then using getByTestId i picked up the input element.  // the component <TextField   data-testid="input-email"   variant="o...
I'm trying to mock a fetch() that retrieves data into a component.  I'm using this as a model for mocking my fetches, but I'm having trouble getting it to work.  I'm getting this error when I run my tests: babel-plugin-jest-hoist: The...
I am testing my component wit react-testing-library and test works well. I just can't get rid of this warning, fireEvent should by wrapped in act out-of-the-box, but I tried to wrap it again and it did'nt help.  Here is my test case.  it.only...
I have a mock as follows  jest.mock('react-hook-inview', () => {   const setRef = jest.fn();   const observer = jest.fn();   const intersecting = true;   const entry = {     y: 0,   };   return [setRef, intersecting, entry, observer]; });...
Warning: validateDOMNesting(...): <tbody> cannot appear as a child of <div>.     in tbody (created by TableBody)     in TableBody (created by TableBody)     in TableBody   Question:  How do I render my TableBody component a table element,...
I'm trying to run the example in react-testing-library to test react hooks. But it seems to fail on this line:  testHook(() => ({count, increment} = useCounter({ initialCount: 2 })))   Looks like it's related to Babel. Tried googling but c...
Let's assume that a component returns null in render method, based on some prop.  What is the best way to use expect in order to ensure that component is not rendered?  Example:  import React from 'react'; import { render, fireEvent } fro...

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