INTERVIEW QUESTIONS SOFTWARE TESTING TYPES FUNCTIONAL TESTING DETAILS

Question: How to write functional tests

Answer: Even though functional testing is so important, it has a reputation as the ugly stepchild of development. On most projects, there is a separate group that does functional testing. There is usually an army of people constantly interacting with the system to determine whether it behaves correctly. This attitude and group setup is foolishness.

Functional testing should be approached much like unit testing. Write the tests as soon as there is code to be written that produces something a user will interact with (such as a dialog), but before actually writing the code. Work with a user to write functional tests that capture the user requirements. Whenever you start a new task, describe the task in the functional testing framework. Your development effort then moves forward, unit testing when you add new code. When all of the unit tests pass, run the original functional test to see if it is passing or if it needs modification.

Ideally, the concept of a functional testing group should disappear. Developers should be writing functional tests with users. After there is a suite of functional tests for the system, the members of the development team responsible for functional testing should bombard the system with variations of the initial tests.

Even though functional testing is so important, it has a reputation as the ugly stepchild of development. On most projects, there is a separate group that does functional testing. There is usually an army of people constantly interacting with the system to determine whether it behaves correctly. This attitude and group setup is foolishness.

Functional testing should be approached much like unit testing. Write the tests as soon as there is code to be written that produces something a user will interact with (such as a dialog), but before actually writing the code. Work with a user to write functional tests that capture the user requirements. Whenever you start a new task, describe the task in the functional testing framework. Your development effort then moves forward, unit testing when you add new code. When all of the unit tests pass, run the original functional test to see if it is passing or if it needs modification.

Ideally, the concept of a functional testing group should disappear. Developers should be writing functional tests with users. After there is a suite of functional tests for the system, the members of the development team responsible for functional testing should bombard the system with variations of the initial tests. Source: CoolInterview.com

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