Questions tagged [react-testing-library]
Questions about testing React components with the react-testing-library utility.
react-testing-library
3,772
questions
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How to change the value of a MUI DatePicker or TimePicker in Jest/react-testing-library?
I have a component that uses the Material UI datepicker and timepicker.
function MyComponent() {
const [dateFilter, setDateFilter] = useState(moment());
const [timeFilter, setTimeFilter] = ...
- 1
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1
answer
27
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How to get and test an element style using RTL?
I have a sidebar menu component, which has a small tab to be pressed in order to show/hide the menu.
The tab, as the entire menu, can be rendered on the left or the right side of the screen based on '...
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1
answer
42
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renderHook not rendering items called from API
I have a custom hook (useFetch), which I'm using inside a page to pass data into a <Products/> component.
export default function App() {
const { products, totalProducts, currentPage, ...
1
vote
1
answer
26
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Test function inside useEffect
I am testing my components using Jest and React Testing Library. The current code is updating a title in the TopBar component based on scroll position and current collection title:
const [...
- 33
-1
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1
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32
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React testing library with jest : trying to test the existence of a button with toHaveLength fails. Why?
I just started trying out react testing library with jest, going through a tutorial and have the following question:
const App = () => {
return (
<form onSubmit={handleSubmit}>
&...
- 189
-1
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27
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How to run multiple test cases from single directory using Jest
I have the following directory structure:
parent
dummy
runas
src
__tests__
packages
runas
src
__tests__
jest.config.js
package.json
I want to run all ...
- 59
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18
views
queryAllByRole('checkbox') works different depending on environment
I have a Vitest test that uses expect(screen.queryAllByRole('checkbox').length).toBeGreaterThan(0)
Running in the WebStorm test runner, the test passes. Running via nx in the terminal (and in CI) ...
- 12.7k
-1
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19
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Only the react-query test code does not run in Jest 29.7 with MSW 2.3.1
Currently, Jest is using version 29.7 and MSW is using version 2.3.1.
When I set up MSW and wrote test code for React queries, it kept failing.
However, if I create a random fetchMock and run the test,...
- 65
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1
answer
30
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Difficulty with getByLabelText in React
I have an input in a form with the following code...
<div className="Field" id="choose-date">
<div className="field-title-icon">
<label htmlFor=...
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13
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How is a component with multiple setInterval() tested?
There are two setInterval() functions within a component I'm working on. Once the function start_new_game sets the component state variable level equal to '0', the component will invoke useEffect. The ...
- 71
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40
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How to mock custom hook?
I want mock the getConversionList being called in useEffect. However since new to mocking need help
import { useConversion, useOtherHooks } from "@custom/library";
const [ getConversionList,...
- 1
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33
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An issue with mocking 2 fetch requests for each test in React Testing Library
I am trying to mock 2 API requests in each test. See the code below to better understand what I mean:
// exported mock request 1
export const mockSearchList = () => {
return jest.fn(() =>
...
- 392
1
vote
1
answer
134
views
Vitest/React Testing Library - Error: Test timed out in 5000ms
In attempting to test setInterval() within the start_new_game() function nested within the <Simon /> component the following error is being raised:
Error: Test timed out in 5000ms. If this is a ...
- 71
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18
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Unit Test Repeatedly Fails When Trying To Remove Line Item From Cart (Vitest)
I'm relatively new to the world of writing unit tests and using Vitest so my issue might be quite obvious to someone more experienced but I can't for the life of me get the third test to actually ...
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20
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Mocking internal change handler in MUI component
I am trying to write a test for the following code. It uses MUI components to render a checkbox with label.
import React from 'react';
import { FormControlLabel, Checkbox } from '@mui/material';
...
- 25