How do you expect a void method to call in EasyMock?

When we use expectLastCall() and andAnswer() to mock void methods, we can use getCurrentArguments() to get the arguments passed to the method and perform some action on it. Finally, we have to return null since we are mocking a void method.

How do you mock on EasyMock?

EasyMock is used to mock interfaces so that a dummy functionality can be added to a mock interface that can be used in unit testing. This tutorial should help you learn how to create unit tests with EasyMock as well as how to use its APIs in a simple and intuitive way.

How do I make a private call in PowerMock?

PowerMock : How to test a private method

1. STEP 1: Add Maven jar files.
2. STEP 2: Create a class MyClass.java.
3. STEP 3: Write a test case for public method : my _public _method.
4. STEP 4: Use PowerMock’s WhiteboxImpl class to test a private method.

What is difference between mock and spy in Mockito?

Both can be used to mock methods or fields. The difference is that in mock, you are creating a complete mock or fake object while in spy, there is the real object and you just spying or stubbing specific methods of it. When using mock objects, the default behavior of the method when not stub is do nothing.

Can we use mock and spy together?

It is uncommon, and arguably inappropriate, to use @Spy and @InjectMocks together. @InjectMocks works as a sort of dependency injection for the system under test: If you have a test that defines a @Mock or @Spy of the right type, Mockito will initialize any fields in your @InjectMocks instance with those fields.

Can we mock private method?

For Mockito, there is no direct support to mock private and static methods. In order to test private methods, you will need to refactor the code to change the access to protected (or package) and you will have to avoid static/final methods.

Is expectlastcall () required in easy mock?

If you don’t care then EasyMock.expectLastCall (); is not required and does not make any difference, your statement “obj.methodThatReturnsVoid (EasyMock. anyObject ());” is enough for setting up expectation. Show activity on this post. You are missing EasyMock.verify (..)

How to mock a void method In EasyMock?

EasyMock expect() method can’t be used to mock void methods. However, we can use expectLastCall() along with andAnswer() to mock void methods. EasyMock void method. When we use expectLastCall() and andAnswer() to mock void methods, we can use getCurrentArguments() to get the arguments passed to the method and perform some action on it.

How to mock void method in JUnit test?

Below image shows the console output when the above JUnit test is executed. If we just want to mock void method and don’t want to perform any logic, we can simply use expectLastCall ().andVoid () right after calling void method on mocked object. You can checkout complete project and more EasyMock examples from our GitHub Repository.