EasyMock

EasyMock is an open-source testing framework for Java released under the Apache License. The framework allows the creation of test double objects for the purpose of Test-driven Development (TDD) or Behavior Driven Development (BDD).

Research performed in 2013 on 10,000 GitHub projects found that EasyMock is the 32nd most popular Java library.

Features

The EasyMock provides dynamically generated Mock objects (at runtime), without having to implement them. In EasyMock, the definition of Mock Object is differed from using an implemented Mock Object. Mock objects are built at run time and additional implementations cannot be defined for those objects.

Origin

EasyMock was created by Tammo Freese in 2001 (at OFFIS). Originally it allowed only mock interfaces, with type safe mocking and additional features were added in later developments. Most notably, class mocking was added by Henri Tremblay, the current lead developer, in 2003.

Usage

EasyMock can be used in application with often-changing interfaces.

Example

Simple currency exchange program is provided here.
An interface may look like as follows:

import java.io.IOException;

public interface ExchangeRate

Implementation for a concrete class may look like as follows:

import java.io.IOException;

public class Currency

Sample implementation for a test class may look like as follows:

import junit.framework.TestCase;
import org.easymock.EasyMock;
import java.io.IOException;

public class CurrencyTest extends TestCase

See also

* Behavior driven development
* Mock object
* List of unit testing frameworks
* Software testing
* Unit testing

References

External links

*
* {{GitHub, https://github.com/easymock/easymock

Unit testing frameworks