Chapter 11. Automated Testing of Plug-ins

JUnit and SWTBot – automated testing of plug-ins

JUnit is the testing framework of choice for Eclipse applications, and can be used to run either pure Java tests or plug-in tests. If user interfaces need to be exercised, then SWTBot provides a facade onto the underlying Eclipse application, and can be used to drive menus, dialogs, and views.

In this chapter, we will:

  • Create a JUnit test running as pure Java code
  • Create a JUnit test running as a plug-in
  • Write a UI test using SWTBot
  • Interrogate views and work with dialogs
  • Wait for a condition to occur before continuing

Using JUnit for automated testing

One of the original automated unit testing frameworks, JUnit has been in use at Eclipse for over a decade. Part of Eclipse's quality can be attributed to the set of automated unit tests that exercise both the UI and the non-UI (headless) components.

JUnit works by creating a test case with one or more tests—which usually correspond to a class and methods respectively. Conventionally, test classes end with Test but this is not a requirement. Multiple test cases can be aggregated into test suites, although implicitly a project becomes its own test suite.

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