TestNG is a testing framework inspired from JUnit and NUnit. It introduce some new functionalities to overcome the drawbacks in JUnit and making TestNG more user-friendly.
TestNG is designed in such way that can support all types of tests, like unit tests, end-to-end tests..etc.Now question comes in our mind is, How TestNG is more powerful then JUnit and what are the advantages of testng.Let us see....
Well defined Annotations:
TestNG annotations are defined very clearly and easy to understand the usage of it.
Test-case Priority: User can run the tests (or) test cases in order based on the business logic Priority.
Multiple Browsers Support:
TestNG allows user to run same tests in multiple browsers like Firefox, Chrome ..so on.
TestNG allows user to run same tests in multiple browsers like Firefox, Chrome ..so on.
Support Data driven testing:
By using @DataProvider concept, user can run same test with multiple set of test data.
HTML Report:
TestNG will provide understandable HTML report by default after completion of execution.
User can integrate other third party reporting plugin like Extent report, ATU report..so on.
Failed test execution:
Generally in test automation we see some false failures like loading/sync issues, to minimize the false failures and filter valid failures in testng there is possibility to re-execute the failed tests cases.
Dependent methods for application:
TestNG support the dependence method execution. Ex: if one method is dependent on another.(Home page verification method is dependent on successfully login method)
Allows Grouping:
TestNG supports Grouping, user can group tests based on features or modules or type of testing(Sanity or Regression).