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vertical incremental testing comparison table

Subject	have procedure	has definition	have disadvantage	be	find	is a synonym of	combine
bottom-up testing	start by testing the very lowest levels of the software using a driver	A incremental testing strategy in which you start by testing the very lowest levels of the software using drivers, and then work upwards, as you integrate successive layers	the cost of writing the drivers	better than big bang testing for large systems	defects whose consequences are obvious but which are buried in complex code, and thus will be hard to detect when inspecting
sandwich testing	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	An incremental testing strategy in which you test the top layers and bottom layers, and finally test the integrated system		the most effective form of integration testing for many systems	defects whose consequences are obvious but which are buried in complex code, and thus will be hard to detect when inspecting	mixed testing	bottom-up testing and top-down testing
top-down testing	test only the user interface, with the underlying functionality simulated by stubs work downwards, integrating lower and lower layers, each time creating stubs for the layers that remain un-integrated as you integrate each lower layer, test the system again	An incremental testing strategy in which you start by testing only the user interface, with the underlying functionality simulated by stubs, then you work downwards, integrating lower and lower layers	the cost of writing the stubs	better than big bang testing for large systems	defects in the layer that was most recently integrated

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