Nose ignores test with custom decorator
I have some relatively complex integration tests in my Python code. I simplified them greatly with a custom decorator and I'm really happy with the result. Here's a simple example of what my de开发者_开发百科corator looks like:
def specialTest(fn):
def wrapTest(self):
#do some some important stuff
pass
return wrapTest
Here's what a test may look like:
class Test_special_stuff(unittest.TestCase):
@specialTest
def test_something_special(self):
pass
This works great and is executed by PyCharm's test runner without a problem. However, when I run a test from the commandline using Nose, it skips any test with the @specialTest decorator. I have tried to name the decorator as testSpecial, so it matches default rules, but then my FN parameter doesn't get passed.
How can I get Nose to execute those test methods and treat the decorator as it is intended?
SOLUTION
Thanks to madjar, I got this working by restructuring my code to look like this, using functools.wraps and changing the name of the wrapper:
from functools import wraps
def specialTest(fn):
@wraps(fn)
def test_wrapper(self,*args,**kwargs):
#do some some important stuff
pass
return test_wrapper
class Test_special_stuff(unittest.TestCase):
@specialTest
def test_something_special(self):
pass
If I remember correctly, nose loads the test based on their names (functions whose name begins with test_). In the snippet you posted, you do not copy the __name__
attribute of the function in your wrapper function, so the name of the function returned is wrapTest
and nose decides it's not a test.
An easy way to copy the attributes of the function to the new one is to used functools.wraps
.
精彩评论