Mocking a function called inside another function inside a class python

Question

I need to mock a function(this_function()), that is called inside another function(receive()), inside a function blueprint, inside a class A. How can I do it? I create a mock for this_function() in the file where i have all tests.

class A: 
       def blueprint(): 
           @route("/", method = ["POST"])
           async def receive(): 
                  ....
              test = await this_function()

I created a mock function in the same file as my test:

def mock_this_function(): 
   return ..

class Tests(unittest.TestCase): 
   @patch("path.to.classA.this_function")
    def test(mock_this_function):

This_function is defined in a helper.py module.

I'm not able to connect/use mock_this_function. It always connect me with this_function... Any solution? any Tips how to properly mock it?

Answer 1

Try this path in your mock: " path.to.classA.this_function " instead, you are probably having the wrong path. I mean, it doesnt matter how nested your function is. If it is imported, then you just need to refer to the mock path properly, which is very well described in the link provided by @HallerPatrick.