This document provides a 30 minute review of EasyMock, an open source testing framework that allows creation of mock objects to test code in isolation. It discusses that mocks are fake objects that allow for modular testing by recording and verifying method call expectations. It also explains how to create a mock object, define expectations for method calls and parameters, replay the mock to walk through the expected call sequence, and then use the mock when testing a class.

1. EasyMock 101
A 30 Minute Review by Matthew McCullough

2. ❶ What Is Mocking?

3. Are You Mocking Me?
• A fake object
• Allows for more modular testing
• Records and verifies expectations of calls

4. ❷ Creating A Mock

6. ❸ Expectations

7. Expecting A Lot
• Expect method is called on mock
• Expect sequence of method calls on mock
(call createStrictMock())
• Expect parameters to methods calls on
mock

8. Expect A Call
EasyMock.expect(iEnumIntfMock.getNumberOfRows()
);

9. Expect A Return
EasyMock.expect(iEnumIntfMock.getNumberOfRows()
).andReturn(5);