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 asse
I have Jest installed on my machine and typing jest from terminal results in tests from parent folers also getting executed. I want to run tests only from the c
I have created my models using the sequelize-auto package and used them in my controllers const sequelize = require('../database/db'); var models = require("../
I'd like to change the implementation of a mocked dependency on a per single test basis by extending the default mock's behaviour and reverting it back to the o
I'm trying to spy on a function inside a function component using react testing library. I wanted to test whether handleClick function has been called whenever
I have some components that are rendering another component (FetchNextPageButton) that is already tested in isolation, like these ones: const News = () => (
I'm creating unit testing of Swiper using Jest. Here is my code: https://codesandbox.io/s/swiper-default-react-forked-v0dnz?file=/src/App.test.jsx ● Test
I am doing unit tests on a react app that is using relay as a graphql client when testing , i get mocked data with like this : title: '<mock-value-f
I am trying to run tests using Jest, however I am getting this error: jest.mock is not a function What am I doing wrong? Here's my CodeSandbox: https://co
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. Lo
Gist I have a Monorepo with solely Typescript packages. When I run tsc --build all packages will be compiled to Javascript. This worked fine until I added a pa
How to launch jest in debug mode on the current opened file, and only this one, regardless of the OS (windows, linux, mac). The problem: When using vscode und
Edit: Run npm install @types/jest To fix Just trying to type it() and the auto suggestion is isTag I've tried adding a jsconfig.json { "compilerOptions": {
Is there a difference between expect(screen.queryByText('<something>')).toBeInTheDocument(); And screen.getByText('<something>'); (The specific ge
I have been trying to use the retry-axios library and assert the number of times in a "get" has been called without any luck. Here is my setup: axios.config.ts
I'm writing an async test that expects the async function to throw like this: it("expects to have failed", async () => { let getBadResults = async () =>
Is there a reason I would prefer one method over the other? Here are some examples: describe('some tests', () => { [1, 2, 3].forEach(num => { test(
I want to install typescript and jest in a create-react-app-based app. I feel that since this is such a common installation choice there must be at least one "e
I'm writing a test in jest for a svelte component which dynamically imports another component. The following snippet is the part where the dynamic import happen
I have a class that is responsible for setting the theme for my application. I'm trying to test that it throws an error if you give it a theme that it does not