Hey Kimberly, TestNG has many advantages over JUnit testing framework:
- TestNG Annotations are easy to understand over JUnit.
- No constraints like declaring @BeforeClass and @AfterClass in TestNG, which are present in JUnit.
- As method name constraint is present in JUnit, such method name constraint is not present in TestNG and you can specify any test method names.
- TestNG enables you to group test cases easily which is not possible in JUnit.
- TestNG supports following three 3 additional setUp/tearDown level: @Before/AfterSuite, @Before/AfterTest and @Before/AfterGroup.
- TestNG do not require extend any class.
- TestNG allows to execute test cases based on group which isn't possible in JUnit.
- Parallel execution of Selenium test cases is possible in TestNG.