Use of Python mock patch

When using patch in a mock of Python, you have encountered a possible error spot, specifically recorded.

First use Patch.object, there is no error in it.

test_module.py

Import OS
def rm (filename):
    os.remove (filename)


def myfuction (): Return
    2


def fuction_uu (): return
    myfuction ()

test_mock_fuction.py

Import nose from
mocks import magicmock,patch from
test_module import fuction_uu,rm
import Test_module
import mock


@patch. Object (Test_module, ' myfuction ')
def test_faction_uu (mock_myfuction):
    Mock_myfuction.return_value =
    assert  fuction_uu () = =
    
@patch. Object (test_module, ' OS ')
def TEST_RM (mock_os):
    rm ("any path")        # Test this RM called Os.remove with the right parameters
    Mock_os.remove . Assert_called_with ("Any path")  

But when using patch, there was a problem. The following code in the Python->run when all OK, but I use the nose frame, is run as UnitTest, the error: "No module named Test_module."

Import nose from
mocks import magicmock,patch from
test_module import fuction_uu,rm
import Test_module
Import mock


@patch (' Test_module.myfuction ', magicmock (return_value =))
def test_faction_uu ():
    print Fuction_uu () =
    
@patch (' Test_module.os ')
def test_rm (mock_os):
    rm ("any path")        # test that RM Called Os.remove with the right parameters
    Mock_os.remove.assert_called_with ("Any path")        


if __name__ = = ' __ Main__ ':
    test_faction_uu ()
    test_rm ()

Then I checked the official mock documents to find out what the problem was. The first argument should be "should is a string in the" form ' package.module.ClassName '. "Change to the following code, all OK.

Import nose from
mocks import magicmock,patch from
test_module import fuction_uu,rm
import Test_module
Import mock


@patch (' Test_mock_fuction.test_module.myfuction ', magicmock (return_value =))
def test_ Faction_uu ():
    assert fuction_uu () =
    
@patch (' Test_mock_fuction.test_module.os ')
def test_rm (mock_os ):
    rm ("any path")        # Test this RM called Os.remove with the right parameters
    Mock_os.remove.assert_called_ With ("Any path")        


if __name__ = = ' __main__ ':
    test_faction_uu ()
    test_rm ()