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Graphical User Interfaces (GUIs) make up a large portion of the code comprising many modern software applications. However, GUI testing differs significantly from testing of traditional software. One respect in which this is true is test case maintenance. Due to the way that GUI test cases are often implemented, relatively minor changes to the construction of the GUI can cause a large number of test case executions to malfunction, often because GUI elements referred to by the test cases have been renamed, moved, or otherwise altered. The authors posit that a general solution to the problem of GUI test case maintenance must be based on heuristics that attempt to match an application's GUI elements across versions.
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