jestjs Archives - Page 2 of 2

How to use ESLint with Jest

I’m attempting to use the ESLint linter with the Jest testing framework. Jest tests run with some globals like jest, which I’ll need ...

May 13, 2022
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How to test the type of a thrown exception in Jest

I’m working with some code where I need to test the type of an exception thrown by a function (is it TypeError, ReferenceError, ...

May 11, 2022
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How can I mock an ES6 module import using Jest?

I want to test that one of my ES6 modules calls another ES6 module in a particular way. With Jasmine this is super ...

May 7, 2022
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Message “Async callback was not invoked within the 5000 ms timeout specified by jest.setTimeout”

I’m using Puppeteer and Jest to run some front end tests. My tests look as follows: describe("Profile Tab Exists and Clickable: /settings/user", () ...

May 6, 2022
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What is the difference between ‘it’ and ‘test’ in Jest?

I have two tests in my test group. One of the tests use it and the other one uses test. Both of them ...

May 2, 2022
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How do I test a single file using Jest?

I am able to test multiple files using Jest, but I cannot figure out how to test a single file. I have: Run ...

April 29, 2022
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How do I run a single test using Jest?

I have a test ‘works with nested children’ within the file fix-order-test.js. Running the below runs all the tests in the file. jest ...

April 28, 2022
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