TestNG Interview Questions and Answers
Ques 26. How can you group tests using regular expressions in TestNG?
Tests can be grouped using regular expressions in TestNG by specifying the 'groups' attribute in the testng.xml file with a regular expression pattern that matches the desired test groups.
Ques 27. Explain the purpose of the @Parameters annotation in conjunction with @Factory.
The @Parameters annotation in conjunction with @Factory allows you to pass parameters to the factory method, creating dynamic instances of the test class with different parameter values.
Ques 28. What is the purpose of the 'preserveOrder' attribute in the @Test annotation?
The 'preserveOrder' attribute in the @Test annotation, when set to 'true', ensures that the order of test methods is preserved as defined in the testng.xml file, even when parallel execution is enabled.
Ques 29. What is the purpose of the 'alwaysRun' attribute in the @Test annotation?
The 'alwaysRun' attribute in the @Test annotation ensures that the annotated method (such as @BeforeMethod or @AfterMethod) always runs, even if the test method fails.
Ques 30. Explain the concept of parameterization in TestNG.
Parameterization in TestNG allows you to run the same test method with different sets of data. This can be achieved using the @Parameters annotation or data providers.
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