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acceptance testing
subject			fact

acceptance testing	has definition Testing performed by customers, on their own initiative, to decide whether software is sufficiently acceptable to pay for
	has purpose to decide whether software is of sufficient quality either to purchase or to pay a custom developer to choose between several competing generic products
	is a subtopic of 10.9 - Strategies for Testing Large Systems
	is performed by customers on their own initiative
	is a kind of testing performed by users and clients
testing performed by users and clients	should occur when the developers believe that the software has reached a sufficient level of quality (e.g. it is approaching the quality targets)
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
	is complementary to inspecting
	requires attention to detail
process	see also process^2