Testing Windows Registry Entries

Warning: Registry keys may be hazardous to your program's health! Registry key entries in Windows applications-visible or hidden-are often neglected by testers. A registry key entry is a program feature just like any other application function and as such needs to be validated. Michael Stahl describes why registry keys should be accorded special attention during testing and proposes a strategy for mitigating risks posed by incorrect registry key entries. He suggests a test strategy, as well as coding standards for input value and type validation, default values, regeneration, and naming rules. Michael demonstrates the use of correct and incorrect registry keys in common commercial applications.