Error guessing - TwoGears/hakomo-guides GitHub Wiki

The Error guessing is a test method in which test cases used to find bugs in programs are established based on experience in prior testing. The scope of test cases usually rely on the software tester involved, who uses past experience and intuition to determine what situations commonly cause software failure, or may cause errors to appear. Typical errors include divide by zero, null pointers, or invalid parameters. Error guessing has no explicit rules for testing; test cases can be designed depending on the situation, either drawing from functional documents or when an unexpected/undocumented error is found while testing operations.

Though Error guessing is one of the key techniques of testing, it does not provide a full coverage of the application. It also cannot guarantee that the software has reached the expected quality benchmark. This technique should be combined with other techniques to yield better results.