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testing performed by software engineers comparison table

Subject	have example	have purpose	has definition	be	test	perform by	have advantage
developer testing			Preliminary testing performed by the people who do the design and programming	complementary to inspecting
independent testing			Testing performed by a separate group other than the people who do the design and programming	complementary to inspecting		a group that specializes in testing and has developed specific expertise in how to do good testing, and how to use testing tools	the testers do not have a vested interest in seeing as many test cases pass as possible
integration testing			Testing during or following the process of integrating a system	better than big bang testing for large systems			when you find a problem, you can find the defect more easily because you have a better idea in which subsystem to look
object oriented testing	Writing methods within each class to act as drivers that will test the methods of that class Testing to ensure that the behaviour of a subclass is consistent with the behaviour of its superclass			complementary to inspecting
regression testing		to test software again once some defects have been fixed in case new defects have been inadvertently added	The process of re-testing the a system, using a selected subset of test cases, after changes are made	complementary to inspecting	a subset of the previously successful test cases because it tends to be far too expensive to re-run every single test case every time a change is made to software
unit testing			Testing an individual module or component in isolation	complementary to inspecting

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