10.4 When to Stop Testing
A key question often asked by novice testers and students of testing is when one should stop testing. A simple answer is to stop testing when all the planned test cases are executed and all the problems found are fixed. In reality, it may not be that simple. We are often pressured by schedule to release software product. Two techniques will be discussed here. The first is based on keeping track of the test results and observing the statistics. If the number of problems discovered stabilizes to near zero, we would usually consider stopping the testing. Consider FIGURE 10.7, which illustrates a problem find rate through time.
FIGURE 10.7 Decreasing problem find rate.
The number of problems found per hour will eventually ...
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