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bottom-up testing
subject			fact

bottom-up testing	has definition 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
	has disadvantage the cost of writing the drivers
	has procedure start by testing the very lowest levels of the software using a driver
	is a subtopic of 10.9 - Strategies for Testing Large Systems
	is a kind of vertical incremental testing
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
	is better than big bang testing for large systems
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