TestNG is a powerful testing framework inspired by JUnit and NUnit testing, and it is useful for unit testing, functional testing, and integration testing. It facilitates parameterized testing, which is not possible with JUnit. It is empowered with many useful annotations, such as before and after every test method (@BeforeMethod and @AfterMethod), and before and after class (@BeforeClass and @AfterClass), to carry out pre- or post-data processing.

The following are the features of TestNG:

• Easy test case writing
• It can generate HTML reports
• It can generate logs
• It has a good integration test support