API's

PowerMock consists of two extension API's. One for EasyMock and one for Mockito. To use PowerMock you need to depend on one of these API's as well as a test framework. Currently PowerMock supports JUnit and TestNG. There are three different JUnit test executors available, one for JUnit 4.4+, one for JUnit 4.0-4.3 and one for JUnit 3. There's one test executor for TestNG which requires version 5.11+ depending on which version of PowerMock you use.

Writing tests

Write a test like this:

@RunWith(PowerMockRunner.class)
@PrepareForTest( { YourClassWithEgStaticMethod.class })
public class YourTestCase {
...
}

Sample code is available in subversion:

• Mocking static methods
• Expect new instance
• Suppress constructor

JUnit 3 requires a different setup by creating a suite, since test runners are not available. Please view some examples:

• Mocking private methods with JUnit 3

Maven setup

JUnit

• EasyMock JUnit Maven setup
• Mockito JUnit Maven setup

TestNG

• EasyMock TestNG Maven setup
• Mockito TestNG Maven setup

Non maven users

EasyMock

JUnit: Download the EasyMock zip-file with PowerMock and all its dependencies and add those to your project.

TestNG: Download the EasyMock zip-file with PowerMock and all its dependencies and add those to your project.

Mockito

JUnit: Download the Mockito zip-file with PowerMock and all its dependencies and add those to your project.

TestNG: Download the Mockito zip-file with PowerMock and all its dependencies and add those to your project.

Or

You could also download the EasyMock jar-file or Mockito jar-file in a single file and then download the dependencies separately.

Need to bootstrap using a JUnit rule?

• The PowerMockRule makes this happen

Java agent based bootstrapping

Use the PowerMock Java Agent if you're having classloading problems when using PowerMock.