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Computers as Components, 3rd Edition by Marilyn Wolf

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5.10 Program Validation and Testing

Complex systems need testing to ensure that they work as they are intended. But bugs can be subtle, particularly in embedded systems, where specialized hardware and real-time responsiveness make programming more challenging. Fortunately, there are many available techniques for software testing that can help us generate a comprehensive set of tests to ensure that our system works properly. We examine the role of validation in the overall design methodology in Section 9.6. In this section, we concentrate on nuts-and-bolts techniques for creating a good set of tests for a given program.

The first question we must ask ourselves is how much testing is enough. Clearly, we cannot test the program for every possible ...

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