> Testing is one of the most critical phases of the implementation stage. Before the system is turned over to the users, it must be thoroughly tested. Assuming that the system is free of errors can be a costly mistake. "Anyone who believes that his or her program will run correctly the first time is either a fool, an optimist, or a novice programmerö (Smith). Once the system has been delivered and is in use, correctly the flaws can result in significant down time. Errors can be difficult to find and can cause undetected errors over a long period of time that result in long-term skewing of data. Testing can be time-consuming in a project, but it well worth the time in terms of system integrity and customer satisfaction. Testing involves: selecting what is to be measured by the test, devel
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