What are the key features of Mocha and Jest?

What are the key features of Mocha and Jest?

Mocha is a flexible testing framework for Node.js, while Jest is a zero-config testing framework by Facebook. Mocha supports various assertion libraries and reporters, whereas Jest comes with built-in assertions and a powerful mocking library.

Can you explain the differences in their test execution?

Sure! Mocha runs tests sequentially by default, which can be beneficial for certain scenarios. Jest, on the other hand, runs tests in parallel, which can significantly speed up the testing process.

What about their support for asynchronous testing?

Mocha supports asynchronous testing using callbacks, promises, or async/await. Jest also supports async testing and provides additional features like automatic retries for failed tests.

Which one is better for a beginner?

For beginners, Jest is often recommended due to its simplicity and built-in features, making it easier to set up and start testing quickly.