Concept

Graphical user interface testing

Summary
In software engineering, graphical user interface testing is the process of testing a product's graphical user interface (GUI) to ensure it meets its specifications. This is normally done through the use of a variety of test cases. Test case generation To generate a set of test cases, test designers attempt to cover all the functionality of the system and fully exercise the GUI itself. The difficulty in accomplishing this task is twofold: to deal with domain size and sequences. In addition, the tester faces more difficulty when they have to do regression testing. Unlike a CLI (command-line interface) system, a GUI may have additional operations that need to be tested. A relatively small program such as Microsoft WordPad has 325 possible GUI operations. In a large program, the number of operations can easily be an order of magnitude larger. The second problem is the sequencing problem. Some functionality of the system may only be accomplished with a sequence of GUI events.
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