Unit test Struts applications with mock objects and AOP

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Tutorial: Unit test Struts applications with mock objects and AOP

Test-driven development improves software quality while reducing development efforts.

Tutorial Details:

As the foundation of an overall test strategy, unit tests must be comprehensive, easy to set up, and quick to execute. However, the dependency on the execution environment and on code outside the class under test complicates our ability to achieve these goals. Deploying the application in a container significantly slows down the code-and-test cycle. Furthermore, the need to collaborate with other classes usually leads to more complex test setups and slower test runs.

The Integration need
Non-trivial Struts applications exhibit both execution environment and class dependencies because Struts actions execute in a servlet container and typically call other classes to process the requests. The mock object testing approach helps remove the unwanted dependencies. The StrutsTestCase testing framework provides a mock implementation of the servlet container with the MockStrutsTestCase class that extends the base JUnit test case. It facilitates out-container testing that speeds up unit testing cycles. EasyMock, another testing framework, makes it easy to dynamically mock the collaborating classes. The mocks substitute real classes with simpler implementations and add verification logic to support unit testing.

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