What is TestNG Listener Class and why do we use it?

Listeners are one of the key components of the TestNG framework. TestNG listeners enable you to do things like produce logs for particular tests or customize reports. For each test project, testers would also want to provide prerequisites and cleanup configurations. Before beginning your testing procedure, automate setting up the prerequisites using a TestNG listener to carry out cleanup procedures after testing.

TestNG listeners improve the functionality of TestNG test cases. They enable developers to run additional code before or after particular testing events. A variety of listeners are offered by TestNG and can be used for various tasks, including creating unique test reports, logging, handling test failures, and changing the way the test framework behaves.