What are the differences between popular testing libraries?

What are the differences between Jest, Mocha, and Jasmine?

Jest is a zero-config testing framework with a focus on simplicity and performance. Mocha is more flexible and allows you to choose your assertion library, while Jasmine is behavior-driven and comes with its own assertion library.

Which one is better for React applications?

Jest is often preferred for React applications due to its built-in support for mocking and snapshot testing, making it easier to test components.

Can I use Mocha with React?

Yes, you can use Mocha with React, but you'll need to set up additional libraries like Enzyme or React Testing Library for component testing.

What about performance differences?

Jest generally offers better performance due to its parallel test execution and intelligent test runner, while Mocha can be slower, especially with larger test suites.