PowerMock is a Java framework that allows you to unit test code normally regarded as untestable.
Java
Latest commit 152ba61 Mar 18, 2017 @thekingnothing thekingnothing committed on GitHub Update README.md
Permalink
Failed to load latest commit information.
.github Add guidelines for managing GitHub issues Feb 29, 2016
gradle Upgrade gradle to 3.4.1 Mar 5, 2017
powermock-api #753 issue fix to upgrade code to be compatible with later versions o… Mar 1, 2017
powermock-classloading Move module-tests to a new module. Jan 25, 2017
powermock-core Issue #763: Fixing bug matching constructor with whenNew when first o… Mar 18, 2017
powermock-modules Add publishing to bintray/maven Jan 25, 2017
powermock-reflect Fix issue #731 No methods matching the name(s) get were found in the … Jan 28, 2017
powermock-release Remove pom file. Jan 25, 2017
tests Issue #733 No runnable methods with Enclosed and PowerMockRunner Mar 18, 2017
.gitignore #753 issue fix to upgrade code to be compatible with later versions o… Mar 1, 2017
.travis.yml Migration from maven to gradle Jan 25, 2017
LICENSE.txt Add distribution and shadow plugin. Finish with publishing to bintray. Jan 25, 2017
README.md Update README.md Mar 18, 2017
build.gradle Upgrade gradle to 3.4.1 Mar 5, 2017
changelog.txt Update changelog.txt Mar 18, 2017
generate_javadoc.sh Added mockito2 and common library to javadoc generation Apr 29, 2016
gradle.properties Migration from maven to gradle Jan 25, 2017
gradlew Upgrade gradle to 3.4.1 Mar 5, 2017
gradlew.bat Upgrade gradle to 3.4.1 Mar 5, 2017
powermock.png Return back logo Jan 25, 2017
settings.gradle Fix #717: Regression: MethodNotFoundException (#741) Jan 26, 2017
version.properties [Gradle Release Plugin] - new version commit: 'powermock-1.7.0RC5'. Mar 5, 2017

README.md

PowerMock

Build Status Maven Central Javadoc Dependency Status

Usage status: Mockito: Reference Status Easymock: Reference Status jUnit: Reference Status TestNG Reference Status

Writing unit tests can be hard and sometimes good design has to be sacrificed for the sole purpose of testability. Often testability corresponds to good design, but this is not always the case. For example final classes and methods cannot be used, private methods sometimes need to be protected or unnecessarily moved to a collaborator, static methods should be avoided completely and so on simply because of the limitations of existing frameworks.

PowerMock is a framework that extends other mock libraries such as EasyMock with more powerful capabilities. PowerMock uses a custom classloader and bytecode manipulation to enable mocking of static methods, constructors, final classes and methods, private methods, removal of static initializers and more. By using a custom classloader no changes need to be done to the IDE or continuous integration servers which simplifies adoption. Developers familiar with the supported mock frameworks will find PowerMock easy to use, since the entire expectation API is the same, both for static methods and constructors. PowerMock aims to extend the existing API's with a small number of methods and annotations to enable the extra features. Currently PowerMock supports EasyMock and Mockito.

When writing unit tests it is often useful to bypass encapsulation and therefore PowerMock includes several features that simplifies reflection specifically useful for testing. This allows easy access to internal state, but also simplifies partial and private mocking.

Please note that PowerMock is mainly intended for people with expert knowledge in unit testing. Putting it in the hands of junior developers may cause more harm than good.

News

  • 2017-02-03: Johan blogs about how to mock slf4j with PowerMock at his blog
  • 2016-11-04: PowerMock 1.6.6 is released with bug fixes and other improvements. See release notes and change log for details.
  • 2016-05-01: PowerMock 1.6.5 has been released with new features such as @TestSubject support for EasyMock, experimental support for Mockito 2 as well as bug fixes and other improvements. See release notes and change log for details. We also want to give a warm welcome to our new core committer Arthur Zagretdinov.

Older News

Documentation

Support and discussion

Join the mailing-list here for questions, feedback and support.

Links