Software Engineering

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CHAPTER 8 
Software Requirements Analysis Practice
Software testing typically is accounted for only during the testing phases, as 
shown in the NIST report, and reflected in 
Figure 8.4
. However, test planning and 
the establishment of test cases and procedures occur throughout the early phases 
of software development. Software testing must be recognized as a significant 
effort, and its planning must begin at the earliest possible time. While the soft-
ware requirements are being analyzed, evaluated, and formalized, the challenges to 
testing and qualifying the software product must be identified. The product quali-
fication section of software specifications identifies the analysis, inspection, dem-
onstration, and test methods that will be used to confirm requirements satisfaction 
based on test results. The cost of software testing is an important contribution in 
determining overall software development costs.