Mocking boolean __bool__ protocol method in Python 2.7

As part of my unittests, I am testing some of the answers using the fantastic Requests library. Something cool you can do with this library is a test for the 200

OK status code by simply calling:

r = requests.get("http://example.com")
if r:
    # success code, do something...
else:
    # error code, handle the error.

      

        
        
        
      

    

How it works behind the scenes: Requests updates the __bool__()

response protocol method returned to match the type of status code.

What I would like to do is be able to mock the response object enough requests.get()

so that I can not only fix the methods / attributes I am interested in ( status_code

, json()

), but also the ability to return False

whenever I choose.

The following doesn't work for me: as soon as I call r

from the above example code, it returns a Mock object <Mock id='2998569132'>

that evaluates to True

.

with mock.patch.object(requests, 'get', return_value=mock.MagicMock(
    # False, # didn't work
    # __bool__=mock.Mock(return_value=False), # throws AttributeError, might be Python2.7 problem
    # ok=False, # works if I call if r.ok: instead, but it not what I want
    status_code=401,
    json=mock.Mock(
    return_value={
        u'error': {
            u'code': 401,
            u'message':
            u'Request had invalid authentication credentials.',
            u'status': u'UNAUTHENTICATED'
        }
    }
)
)) as mock_account_get_failure:
# mock_account_get_failure.return_value = False # overwrites what I just mocked with json() and status_code

      

        
        
        
      

    

I thought the answer might be Magic Mocking the return value of the protocol method , but read here which __bool__

is only supported for Python 3.0.