How can I perform mock testing in different programming languages?

How can I perform mock testing in different programming languages?

Mock testing involves creating simulated objects to mimic the behavior of real objects in controlled ways. What languages are you interested in?

I'm mainly looking at Python and Java. Any specific libraries you recommend?

For Python, you can use the unittest.mock library, and for Java, Mockito is a popular choice. Would you like examples?

Yes, please provide a simple example for both.

Sure! In Python, you can use mock.patch to replace a method with a mock. In Java, you can use Mockito.when() to define behavior for a mock object. Would you like to see the code snippets?

That would be great! Also, how do I know when to use mocks?

You should use mocks when you want to isolate the unit of work from its dependencies, especially when those dependencies are complex or slow.