Software testing techniquesSoftware testing techniques

Graphical user interface testing

Presentation on the seminar

Kaunas University of Technology

• graphical user interface (GUI) testing is the process of testing a product's graphical user interface to ensure it meets its written specifications

• Size– WordPad – 325 possible GUI operations

• Sequence– Opening a file in Word application

• Regression testing– Significant changes in GUI

• Error localization• Complexity of GUI

– Custom application style

• Correctness of result• Test coverage

• GUI states tested• Code functionality covered

• Split application into test components (component = window)

• Test each component thoroughly• Test integration of components• Plan

• Determining– Operations– Initial state– Goal– Plan (how to achieve goal from initial state)

• Expert users– Path is pretty predictable and straight-forward

• Novice users– Path is pretty much random

• How to simulate novice users?

• Genetic algorithms– Novice paths are not random paths – A novice user will learn over time and generally won’t

make the same mistakes repeatedly– A novice user is following a plan and probably has

some domain or system knowledge.

• Selenium (Web UI)• Robotium (Android OS)• SWTBot (SWT applications)• AutoHotKey• Tellurium• White (SWT, WPF, Silverlight, win32, winForms)• And many many others

solo.clickOnText("More");solo.clickOnText("Preferences");solo.clickOnText("Edit File Extensions");Assert.assertTrue(solo.searchText("rtf"));

• Why is GUI testing so hard?

• How to measure GUI test coverage?

• Name 2-3 GUI testing tools

• What are the advantages/disadvantages of automated GUI testing?