What are Mockito spy objects and how do I use them?

What are Mockito spy objects and how do I use them?

Mockito spy objects allow you to create a partial mock of a real object. This means you can call real methods while still being able to verify interactions.

Can you give me an example of how to create a spy object?

Sure! You can create a spy object using Mockito.spy(new YourClass()). This allows you to call real methods on YourClass.

How do I verify that a method was called on a spy?

You can use Mockito.verify(spyObject).methodName() to check if a specific method was called on the spy object.

Are there any limitations to using spy objects?

Yes, one limitation is that you cannot spy on final classes or methods. Also, be cautious as it can lead to complex tests.