def attribute_group_pairs(self) -> GroupPairs:
"""
Return all pairs of groups of attribute names
e.g. (a, [b, c]), ([a, b], c), ([a, c], b)
"""
return get_group_pairs(items=self.attribute_names,
ordered=False,
include_empty=False)
def group_pairs(self, ordered: Optional[bool] = None) -> GroupPairs:
"""
Return all pairs of groups of answer choices
e.g. for (a, b, c) return [(a, [b, c]), ([a, b], c), ([a, c], b)]
:param ordered: Whether to return ordered pairs only.
If not specified, use the `_ordered` property of the
Categorical item.
"""
ordered = ordered if ordered is not None else self._ordered
if ordered:
return get_group_pairs(items=self.category_names,
ordered=True,
include_empty=False)
else:
return get_group_pairs(items=self.category_names,
ordered=False,
include_empty=False)
def test_get_ordered_group_pairs_empty(self):
self.assertEqual(
self.ordered_group_pairs_empty,
get_group_pairs(self.groups, ordered=True, include_empty=True))
def test_get_unordered_group_pairs_no_empty(self):
self.assertEqual(
self.unordered_group_pairs_no_empty,
get_group_pairs(self.groups, ordered=False, include_empty=False))