Using jest in my react app, describe is not defined

reactjs jestjs eslint eslintrc

I am new to jest and trying to figure out some basic stuff in my following code

import * as actions from './IncrementalSearchActions';

describe('Incremental Search Actions', () => {
    it('Should create an incremental search action')
});

The questions/confusions I have around this are

I get an error saying describe is not defined, how do I import the reuqired module? Is this supposed to be used with Karma/Jasmine?

How do you run the test? There is no need to import describe

For 2. Jest doesn't need to be used with karma or jasmine, jest itself is something like a all-in-one solution

How do Import the 'describe' function in ES6, this is my main confusion, do I need to import something in jest?

No you don't need import anything of jest

Do you use npm script to run jest?

SunshinyDoyle

I believe the answer here is the answer to your question.

TL;DR;:

add the following to your .eslintrc file:

"env": {
    "jest": true
}

You can find all the configuration details for other unit test libraries @ ESLint Specifying Environments

Julito Sanchis

Are your test files under a the "test" folder? make sure jest is install properly and listed on your package.json and under scripts have:

"test": "jest --coverage",

you can run the script with npm test

Using jest in my react app, describe is not defined

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