Hi,
I'm trying to insert a TestSuite(s).run() doctest in some code we're
polishing. So far it helped me find a couple of bugs, so I'm quite
impressed with the whole concept.
Unfortunately, there is a test that I'm not yet able to fix, namely
_test_category for an element class we define. Let me try to say what
the situation is without going into irrelevant details:
* we have a class Parent_class which inherits from Algebra
* we have a class Element_class which inherits from AlgebraElement
Say e is an instance of Element_class. Running e._test_category() fails
in the following place:
if not is_extension_type(self.__class__):
# For usual Python classes, that should be done with
# standard inheritance
tester.assert_(isinstance(self, self.parent().category().element_class))
Here self.parent().category() is "Category of algebras over Integer
Ring" and self.parent().category().element_class is
"<class 'sage.categories.algebras.Algebras.element_class'>".
What am I missing? One would hope that an AlgebraElement is an instance
of the element class of an Algebra, but that doesn't seem to be the
case.
Best,
Alex
--
Alex Ghitza -- http://aghitza.org/
Lecturer in Mathematics -- The University of Melbourne -- Australia
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