What is white box testing and what are its advantages and disadvantages?

White Box Testing:

Also known as clear box testing, glass box testing, or structural testing, this method examines the internal structure or workings of the software. Testers need access to the source code and use this knowledge to design test cases that ensure all statements, branches, and paths within the code are executed and tested thoroughly. White box testing is often used to verify the correctness of code logic, identify code errors, and improve code quality.

Advantages:

• Provides thorough coverage of the code base, ensuring that all statements, branches, and paths are tested.
• Helps identify and fix code errors, improving code quality and reliability.
• Can be automated to a large extent, making it efficient for regression testing and continuous integration.

Disadvantages:

• Requires access to the source code, which may not always be feasible or practical.
• Test cases are based on the implementation details, which can make them less effective at identifying user-facing issues or usability problems.

In summary, the choice of testing approach depends on the project requirements, available resources, and the desired level of test coverage. Each approach has its strengths and weaknesses, and a combination of different testing methods may be necessary to ensure thorough testing of software systems.

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