How can I use Jest for unit testing in my JavaScript project?
Jest is a popular testing framework for JavaScript. You can start by installing it via npm with npm install --save-dev jest
.
What are some basic commands I should know?
You can run tests using npm test
, and to run a specific test file, use jest path/to/testfile.js
.
How do I write a simple test case?
A simple test case can be written like this: test('description', () => { expect(value).toBe(expectedValue); });
.
Can I test asynchronous code with Jest?
Yes, you can test asynchronous code using async/await
or by returning a promise in your test.
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