'__details__() should print docstr for subclassed task methods with args'

def test_subclassed_task(self):

    class SpecificTask(Task, ):
        def run(self, arg1, arg2, arg3):
            'Docstring'
    eq_('Docstring\nArguments:    self,    arg1,    arg2,    arg3', SpecificTask().__details__())
