How do I use Jest for testing my JavaScript code?
Jest is a delightful JavaScript testing framework. To get started, you can install it using npm with the command: npm install --save-dev jest
.
What are some basic commands I should know?
Some basic commands include jest
to run tests, jest --watch
to run tests in watch mode, and jest --coverage
to see test coverage.
How do I write a simple test case?
You can write a test case using the test
function. For example: test('adds 1 + 2 to equal 3', () => { expect(1 + 2).toBe(3); });
.
Can I test asynchronous code with Jest?
Yes, you can test asynchronous code using async/await
or by returning a promise. Just make sure to return the promise in your test.
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