The first step in system testing is to prepare a plan that will test all aspects of the system in a way that promotes its credibility among potential users.
There is psychology in testing:
1. Programmers usually do a better job in unit testing because they expected to document and report on the method and extent of the testing.
2. Users are involved, which means communication is improved between users and the designer group.
3. Programmers are involved when they become aware of user problem and expectations. The user' also becomes more aware (and appreciative of the complexity of programming and testing. The upshot of all this is more realistic and cooperative user for successful testing.
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