How can I use Mockito in Python for testing?

How can I use Mockito in Python for testing?

Mockito is primarily a Java framework, but you can use similar libraries in Python like unittest.mock. Would you like to know how to use it?

Yes, please explain how to mock a function using unittest.mock.

To mock a function, you can use unittest.mock.patch. For example:

from unittest.mock import patch

def my_function():
    return 'real value'

@patch('__main__.my_function')
def test_my_function(mock_my_function):
    mock_my_function.return_value = 'mocked value'
    assert my_function() == 'mocked value'

This replaces my_function with a mock during the test.

What are some common use cases for mocking in tests?

Common use cases include isolating the code under test, simulating external services, and controlling the behavior of dependencies.