#e2e testing

End-to-end (e2e) testing is a type of software testing that verifies the system's end-to-end functionality from start to finish. It tests the complete flow of an application, including its user interface, APIs, and databases. In e2e testing, the system is tested as a whole, rather than in individual components or units. This ensures that the application behaves as expected when used by real users. E2e testing for JavaScript applications focuses on verifying that the front-end code works correctly with the back-end code. It also tests the performance of the application, ensuring that it meets the requirements of the user.