- Automated testing: Jest automates the process of running tests, making it easier to write tests and run them frequently.
- Snapshot testing: Jest provides a convenient way to write and verify the output of a component or function using snapshots. Snapshot tests are useful for checking that the behavior of a component has not changed unexpectedly.
- Test coverage reporting: Jest provides test coverage reporting, making it easy to see how much of your code is being tested and where improvements can be made.
- Mocking: Jest provides a powerful mocking system that makes it easy to isolate the behavior of a component or function and test it in isolation.
- Parallel testing: Jest supports parallel testing, making it possible to run tests faster by dividing the workload across multiple processes.
- Assertions: Jest provides a rich set of assertions that make it easy to write tests that check the behavior of a component or function.