jestjs Questions
5
Solved
I'm trying to figure out how o update a single snapshot file. In the docs it says just add the -t and I presume the file name but thats not working for me.
Example, in terminal I use.
jest -u -t te...
3
Solved
I am trying to mock react-router-dom in one of my test cases so that the useHistory hook will function in my tests. I decide to use jest.mock to mock the entire module, and jest.requireActual to pr...
Selfdenial asked 7/7, 2020 at 12:7
2
Solved
I try to test the following code
import { useSnackbar, VariantType, WithSnackbarProps } from 'notistack';
import React from 'react';
interface IProps {
setUseSnackbarRef: (showSnackbar: WithSnack...
2
I have a Typescript-based React project in which I am running jest tests (also in TS). I can run tests fine but am trying to profile the performance of some which take quite a long time to run. I h...
Starlet asked 19/1, 2022 at 13:52
10
Solved
✗ npx jest --version
24.5.0
Got a set of jest tests that are timezone sensitive. We typically run them with an npm script: "jest": "TZ=utc jest"
With the TZ set to utc I get values like this in ...
9
Solved
As I understand it should be done so that useFocusEffect would work as useEffect for testing (mock). I use useFocusEffect for fetchData:
useFocusEffect(
useCallback(() => {
fetchData();
}, [...
Aerograph asked 7/2, 2020 at 13:41
2
I have a straight forward react-comp. which I want to test the styling depending on the react state. The comp looks like the following:
React-comp.
const Backdrop = ({ showBackdrop }) => {
cons...
Foliolate asked 23/9, 2020 at 10:48
2
I am trying to use Jest.js to test some typescript code I wrote. I am getting an error "Error: Do not import @jest/globals outside of the Jest test environment" but I thought I was in a j...
Achaemenid asked 21/2, 2023 at 21:56
4
Solved
I have below code in react.
useEffect(() => {
(async () => {
await httpClient
.get(`${config.resourceServerUrl}/inventory/`)
.then((response) => {
setSponsor(response.data.sponsor);
...
Orthopedic asked 11/2, 2022 at 9:22
3
Solved
I want to have coverage report for only one file that I am working on at the moment.
It is a bit overwhelming to have the full table of coverage for the whole application files and then search for ...
Offstage asked 5/3, 2021 at 12:13
5
Solved
I would like to mock localStorage methods in jest for error simulation. I have localstorage getter and setter methods defined in utility.js. I would like to mock localStorage.setItem to throw an er...
Laguna asked 18/10, 2018 at 21:48
3
Solved
The Jest docs do not demonstrate a way of asserting that no exception was thrown, only that one was.
expect(() => ...error...).toThrow(error)
How do I assert if one was not thrown?
Afterdeck asked 1/4, 2018 at 22:48
2
I have the following issue when I tried to test a react components that implement the react-leaflet library
C:\digital-booking-ui\node_modules\react-leaflet\lib\index.js:1
({"Object.<anony...
Bilinear asked 27/6, 2022 at 2:56
21
I had been using react-testing-library as well as @testing-library/jest-dom/extend-expect. I installed Cypress yesterday, and now I'm getting Typescript errors on all my jest matchers:
Property 't...
Diarthrosis asked 22/11, 2019 at 17:28
2
I am trying to write test case for my Post Detail screen and while running it I am getting error saying :
error occurred in the <ForwardRef> component:
My test class:
import React from "...
Goode asked 6/10, 2022 at 10:37
1
Solved
I'm basically trying to mock an external module in the same way for all my vitest tests, and it's surprisingly not trivial. In Jest, I would just create a __mocks__ folder at the root, and it appea...
Buzzell asked 10/5, 2023 at 0:18
4
Solved
Is it possible to mock a typescript interface with jest?
For example:
import { IMultiplier } from "./IMultiplier";
export class Math {
multiplier: IMultiplier;
public multiply (a: number, b: ...
Quinone asked 31/8, 2018 at 20:27
3
Solved
This error is coming up when I am making a pull request. There is a GitHub workflow audit that runs checks on the pull request and it loads the test file from another repository.
- name: Run Audits...
Andersonandert asked 10/4, 2020 at 18:7
3
I'm implementing a web-scraping script for a website which will collect some useful information.
Script is implemented using Puppeteer library and is basically a set of instructions like:
Start a ...
Nevernever asked 23/12, 2020 at 1:14
5
Solved
What would be my absolute easiest way of mocking fetch using Typescript?
I would just like to do something simple like below. But Typescript tells me that I'm not matching the definition for the fu...
Glarum asked 13/11, 2020 at 9:18
19
I'm using Jest to test my React app.
Recently, I added DeckGL to my app. My tests fail with this error:
Test suite failed to run
/my_project/node_modules/deck.gl/src/react/index.js:21
export {d...
Grajeda asked 13/3, 2018 at 18:31
3
Solved
I was recently looking over a co-workers code and I realized that he implements a jest function in a BeforeAll function at the top of the describe call, and then creates a data object in a beforeEa...
Stygian asked 4/2, 2019 at 13:19
6
Solved
I want to test the content of my material-ui datagrid but only the first 3 columns (out of 8) are rendered in the test. I can test the content of these 3 columns, no problem with that.
Everything r...
Ila asked 11/1, 2021 at 15:27
2
I'm using create-react-app, Jest and react-testing-library for the configuration of the chatbot project.
I have a React functional component that connects to a WebSocket server and DOM changes acc...
Girandole asked 29/11, 2019 at 8:29
2
For bundle size optimization instead of getting components from the lib folder, I am importing it from the es folder.
Example:
import Modal from 'antd/es/modal';
So on writing test cases it is giv...
Kavanagh asked 19/10, 2020 at 13:27
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