For testing reasons, I need to be able to mock the inner/original function of a decorated one which is used somewhere else:
In mydecorator.py:
def my_decorator(f):
def wrapped_f():
print "decorated"
f()
return wrapped_f
@my_decorator
def function_to_be_mocked():
print 'original'
def function_to_be_mocked_undecorated():
print 'original'
def run_decorated():
function_to_be_mocked()
def run_undecorated():
decorated_funtion = my_decorator(function_to_be_mocked_undecorated)
decorated_funtion()
As you can see, I have several versions of the original function function_to_be_mocked, one with the decorator my_decorator and one 'naked'. The runner function run_decorated() calls the decorated version of function_to_be_mocked and run_undecorated() calls the undecorated version and applies the decorator 'manually'. The result of both are the same:
decorated
original
Now I want to test the runner function but I need to mock the original function function_to_be_mocked but also the mocked version should be decorated:
import unittest
import mydecorator
from mock import patch
def mock_function():
print 'mockified'
class Test(unittest.TestCase):
@patch('mydecorator.function_to_be_mocked_undecorated')
def test_undecorated_mocked(self, mock_function_to_be_mocked_undecorated):
mydecorator.function_to_be_mocked_undecorated = mock_function
mydecorator.run_undecorated()
assert 1==0
@patch('mydecorator.function_to_be_mocked')
def test_decoratorated_mocked(self, mock_function_to_be_mocked):
mydecorator.function_to_be_mocked = mock_function
mydecorator.run_decorated()
assert 1==0
This works as expected for the undecorated version test_undecorated_mocked:
decorated
mockified
But the decorated version gives:
mockified
so the decorator vanished.
Is it possible to get the decorated version working in the same way as the undecorated version, where the decorator is applied 'manually'?
I tried to expose the inner function in the decorator without success.
I saw this question How do you mock a function which has decorator apply to it in a unit test? but this doesn't help me.
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