def test_plus_is_conmutative2(self): other = Expression() other.decapitate("blabla") a = self.e + other + self.e b = other + self.e + self.e self.assertEqual(make_canonical_expression(a), make_canonical_expression(b))
def test_are_the_same(self): a = make_canonical_expression(self.a) b = make_canonical_expression(self.b) self.assertNotEqual(a, b)