jestjs Questions
3
I have written unit test using jest version 26.0.0 with react-testing-library and node version 14.2.0. Below is my React functional component which has a button, on clicking makes an ajax call to d...
Sivia asked 22/12, 2020 at 3:17
6
Solved
I have some code which uses the nodemailer module.
In the router (router.js), I have
const transporter = nodeMailer.createTransport(emailArgs);
Then inside the route (/login) I have:
...
retur...
Quern asked 21/11, 2018 at 21:14
4
Solved
I am using a npm module called module-alias. I map some modules in tsconfig.json and package.json
tsconfig.json
"compilerOptions": {
"baseUrl": "./src",
"paths": {
"@config/*": ["config/*"],
...
Shalom asked 16/10, 2019 at 9:24
4
So if I put a console.log inside a test the console.log will appear after the tests e.g.
authentication.spec.js
register
✓ should be able to insert (128ms)
✓ should fail because of duplicate (...
Camel asked 29/10, 2018 at 3:17
3
Solved
I am writing tests using Jest for component which used chart.js to create a line chart. I am getting below error when I am running the tests.
ReferenceError: ResizeObserver is not defined
290 | }...
7
I have the following line that executes correctly in browser
eval(Babel.transform(template, { presets: ['react'] }).code);
but when I run jest tests I am getting ReferenceError: React is not defi...
Heliotype asked 21/11, 2019 at 17:51
5
I am working on backend Typescript project where I am trying to get coverage report for unit test case. Jest returns empty coverage report in terminal as well as in html report stating nothing. I a...
Murmansk asked 7/11, 2020 at 12:22
21
Solved
Some of the code I am trying to test detects the platform, using, e.g.:
import { Platform } from 'react-native';
...
if (Platform.OS === 'android') {
...
} else {
...
}
Is there a sensible ...
Horseshoe asked 1/4, 2017 at 20:2
3
Been reading up a lot of stackoverflow and github discussions, about vue jest having trouble with button.trigger('click'). I've been struggling over this issue for a few hours today, have to say I'...
Alyworth asked 10/7, 2020 at 7:0
3
Jest tests - Please add 'import "reflect-metadata"' to the top of your entry point
I'm developing an application using dependency injection with tsyringe. That's the example of a service that receives the repository as a dependency:
import { injectable, inject } from 'tsyringe'
...
Bustos asked 10/12, 2020 at 10:56
10
I wrote a script with the main purpose of adding new elements to some table's cells.
The test is done with something like that:
document.body.innerHTML = `
<body>
<div id="${containerID...
Pahlavi asked 15/2, 2018 at 14:37
3
I'm trying to run a simple test with JavaScript as below.
import React from 'react';
import Customization from 'components/onboarding/customization';
import '@testing-library/jest-dom';
import { re...
3
What is a good and clean way to cleanup after a test case failed?
For a lot of test cases, I first create a clean database environment, which needs to be cleaned up after a test case finishes.
tes...
Flophouse asked 12/2, 2019 at 11:24
6
I'm having the follow error when running my tests with jest.
console.error
Error: Could not parse CSS stylesheet
at exports.createStylesheet ([PERSONAL_PATH]/node_modules/jsdom/lib/jsdom/living/...
Corgi asked 9/11, 2021 at 23:3
13
I have a custom eslint-config that has several plugins for various packages, including jest. I have the main set to an index which just extends other files.
Long story I have a jest config file. T...
12
Solved
I am attempting to run Jest on my project. I am on a Windows 10. I only have one test in one test file.
In package.json:
"test": "jest"
My directory structure:
src/
app/
routeName/
redux/...
Speculator asked 28/5, 2019 at 18:28
3
Solved
I am getting following error when I am building my application.
Test suite failed to run
A jest worker process (pid=2439) was terminated by another process: signal=SIGKILL, exitCode=null. Operati...
4
Solved
I'm trying to understand how asynchronous testing works in Jest.
What I'm trying to do is similar to an example from the Jest documentation. This works fine ..
function doAsync(c) {
c(true)
}
...
Marthamarthe asked 3/10, 2018 at 18:49
3
Solved
So in my program, when a user logs in, if all credentials are correct they will proceed to the next page if any details are missing or incorrect format, and alert is shown on screen.
How do I tes...
Designed asked 9/4, 2020 at 13:42
2
I have a typescript project and I setup aliases in ts.config.json
{
"compilerOptions": {
"paths": {
"@pkg/*": ["./packages/*"],
},
}
}
in my ts files...
Eustis asked 29/6, 2021 at 20:59
2
I am trying to test my component. In my component, there is a function to measure from the reference of View.
when I debug, the ref value exists. but the measure method is undefined.
This is the sc...
Ponderous asked 19/10, 2020 at 1:54
3
Solved
I'm starting out with Vite for a React application but unable to get jest tests working. I am trying to use Vitest with experimental ES module.
I am getting:
FAIL src/App.test.tsx [ src/App.test.ts...
Alidaalidade asked 9/4, 2023 at 14:11
3
Solved
I'm trying to migrate from AVA to Jest. In AVA you can set ava.setup, in which you set the jsdom environment. For example, creating the DOM structure and doing necessary polyfills (localStorage).
H...
Hirza asked 5/12, 2016 at 9:17
4
I am using Jest with TypeScript. Despite the fact that my code works and I can build my project, Visual Studio Code throws me that error for all Jest methods (describe(), test()...):
Cannot find na...
Surra asked 12/10, 2020 at 11:6
4
Solved
I'm getting TypeError: actImplementation is not a function when trying a simple test for this component
import React from 'react';
import { StyledHeaderContainer, StyledTitle } from './styled';
ex...
Definition asked 1/4, 2022 at 9:27
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