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Quality Code: Software Testing Principles, Practices, and Patterns by Stephen Vance

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Test the Data Permutations

Data5 drives almost all software. When testing user interfaces and public APIs, boundary and validation conditions significantly impact the security and stability of your software. At more programmatic levels, various forms of data-controlled behaviors can comprise non-trivial portions of the functionality. Even in statically typed languages like Java and C#, higher levels of abstraction in your system design naturally decrease the effectiveness of code coverage as a guide for complete testing. Dynamic languages and features like reflection-based execution compound the challenge.

5. I will talk only about the values used in testing here. Database testing warrants the attention of a whole different book.

Boundary Conditions ...

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