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sandwich testing (mixed testing)
subject			fact

sandwich testing	is a synonym of mixed testing
	combines bottom-up testing and top-down testing
	has definition An incremental testing strategy in which you test the top layers and bottom layers, and finally test the integrated system
	has procedure test the user interface in isolation, using stubs test the very lowest level functions, using drivers when the complete system is integrated, only the middle layer remains on which to perform the final set of tests
	is a subtopic of 10.9 - Strategies for Testing Large Systems
	is a kind of vertical incremental testing
	may be the most effective form of integration testing for many systems
integration testing	has advantage when you find a problem, you can find the defect more easily because you have a better idea in which subsystem to look
testing	can find defects whose consequences are obvious but which are buried in complex code, and thus will be hard to detect when inspecting
	involves thinking of what could go wrong without actually studying the software
	requires attention to detail
process	see also process^2