What does PowerMock do?
Table of Contents
What does PowerMock do?
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.
Why PowerMock?
The main aim of PowerMock is to extend the existing APIs with some methods and annotations to provide extra features that make unit testing quite easy. The PowerMock framework provides a class called PowerMockito used to create mock objects and initiates verification and expectation.
Can we use PowerMock in Junit 5?
As your link suggests, still you can’t do power mock stuff with junit-5 directly, simply because there’s no PowerMockRunner (Extension) still available for junit-5.
How do you mock with PowerMock?
For mocking static methods, PowerMock provides two approaches:
- Use PowerMockito. mockStatic() to a mock a static class or all the static methods in a class.
- Use PowerMockito. spy() to mock a specific static method.
Should we avoid PowerMock?
In general, I would say yes, we should avoid usage of Powermock. One doubtful case I see for it – you have no time for appropriate design of you code to make it testable enough without power-mockito (, but do you really need that quality of testing, if you don’t have time for code-design?)
Is PowerMock compatible with JUnit 4?
Power mock is used to mock static methods, private methods. Power mock is not compatible with JUnit5 So we will discuss it will JUnit4. Using power mock we can easily mock static methods. We can return a mocked value if some static method is called or can verify that the static method is called or not.
Can Mockito and PowerMock be used together?
Of course you can – and probably will – use Mockito and PowerMock in the same JUnit test at some point of time.
