All the examples in this article use static methods. doThrow (new Exception ()). Research + discuss whether it is a good idea to enable static methods mocking in Mockito. Unit testing can be hard especially when you need to test a method that is static, this tutorial will help you to easily mock static methods. PowerMock is a JUnit extension the leverages the possibilities of EasyMock and Mockito to mock static methods (and much more). Mocking Void Methods With Mockito doAnswer : If we want our mocked void method to do something (mock the behavior despite being void). Example action items that are totally negotiable and can ran in parallel. Mockito Mock Void Method. Mockito provides the following methods that can be used to mock void methods. Static methods mocking with Mockito. Let’s create a simple example to mock static method using powermockito. when (instance). For example, Mockito. Create a simple java maven project. Feel free to use annotations instead, but make sure that you agree on a single solution with the rest of your team, so that unit tests are written in a common format. We're looking for someone who can lead this effort. Mockito offers two equivalent ways of mocking: Using static methods and; Using @Mock annotations. How to mock void methods with mockito – there are two options: doAnswer – If we want our mocked void method to do something (mock the behavior despite being void). Previous In this post, we will see about Mockito Mock static method. the above is mock static method with string return type. ; Following is an example of how to use it (not an ideal usecase but just wanted to illustrate the basic usage). 1. A little over a week ago, I saw a notification on Twitter , announcing the release of Mockito 3.4.0, which saw the introduction of static mocking capabilities. > Mockito argument matchers are still applied to PowerMock'ed mock: > Mockito.verify(mockObj).methodToMockToo(*Mockito.anyInt()*); > > > How to stub void static method to throw exception: > > Just use Mockito semantic of setting up void method stub: > Mockito.doThrow(new methodName (); or if you want to combine it with follow-up behavior, As with other articles focused on the Mockito framework (like Mockito Verify or Mockito When/Then ), the MyList class shown below will be used as the collaborator to be mocked in test cases: Indeed, a quick Google search for mocking static methods in Java yields this highly up-voted answer on Stack Overflow, which explains how it can be done. If you want to mock static methods, you need to use PowerMockito.PowerMockito is capable of testing private, final or static methods as it makes use of Java Reflection API. Same question with you, the documention seems to provide no link of static void method. Let’s assume the following setup: Our unit under test is the class Calculator which just delegates the addition of two integers to MathUtil which offers only static methods: This is a placeholder ticket for enabling mocking static methods in Mockito. ; doThrow – Then there is Mockito.doThrow() if you want to throw an exception from the mocked void method. This tutorial illustrates various uses of the standard static mock methods of the Mockito API. my question is how to mock static with void return type, not the try with resources block, of course i know that it should in a try with resources block, but that's not my question. 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