How to mock a final class with mockito

Question

I have a final class, something like this:

public final class RainOnTrees{

   public void startRain(){

        // some code here

   }

}

I am using this class in some other class like this:

public class Seasons{

   RainOnTrees rain = new RainOnTrees();

   public void findSeasonAndRain(){

        rain.startRain();

    }

}

and in my JUnit test class for Seasons.java I want to mock the RainOnTrees class. How can I do this with Mockito?

Answer 1

Mocking final/static classes/methods is possible with Mockito v2 only.

add this in your gradle file:

testImplementation 'org.mockito:mockito-inline:2.13.0'

This is not possible with Mockito v1, from the Mockito FAQ:

What are the limitations of Mockito

• Needs java 1.5+
• Cannot mock final classes

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