[Python] Testing an abstract base class in Python

I am looking for ways / best practices on testing methods defined in an abstract base class. One thing I can think of directly is performing the test on all concrete subclasses of the base class, but that seems excessive at some times.

Consider this example:

import abc

class Abstract(object):

__metaclass__ = abc.ABCMeta

@abc.abstractproperty
def id(self):
return

@abc.abstractmethod
def foo(self):
print "foo"

def bar(self):
print "bar"


Is it possible to test bar without doing any subclassing?

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