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Test-Driven Java Development - Second Edition by Viktor Farcic, Alex Garcia

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Black-box testing

Black-box testing (also known as functional testing) treats software under test as a black box without knowing its internals. Tests use software interfaces and try to ensure that they work as expected. As long as the functionality of interfaces remains unchanged, tests should pass even if internals are changed. The tester is aware of what the program should do, but does not have the knowledge of how it does it. Black-box testing is the most commonly used type of testing in traditional organizations that have testers as a separate department, especially when they are not proficient in coding and have difficulties understanding it. This technique provides an external perspective on the software under test.

Some of the advantages ...

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