def test_filter_with_filterables_of_differing_attributes_fails_if_setting_enabled(self):
"""Test filtering with filterables of differing attributes raises an error if any filterables lack the
filtered-for attribute when `ignore_items_without_attribute` is False.
"""
filter_set = FilterSet({FilterableThing(a=3), FilterableThing(b=90), FilterableThing(a=77)})
for kwarg in {"a__gt": 2}, {"b__equals": 90}, {"b__equals": 0}:
with self.assertRaises(AttributeError):
filter_set.filter(**kwarg, ignore_items_without_attribute=False)
def test_filter_with_filterables_of_differing_attributes(self):
"""Test filtering with filterables of differing attributes ignores the filterables lacking the filtered-for
attribute.
"""
filterables = {FilterableThing(a=3), FilterableThing(b=90), FilterableThing(a=77)}
filter_set = FilterSet(filterables)
self.assertEqual(filter_set.filter(a__gt=2), {FilterableThing(a=3), FilterableThing(a=77)})
self.assertEqual(filter_set.filter(b__equals=90), {FilterableThing(b=90)})
self.assertEqual(filter_set.filter(b__equals=0), set())
def test_error_raised_if_any_items_are_not_filterable(self):
"""Test that an error is raised if any items in the FilterSet are not of type Filterable."""
filter_set = FilterSet([1, 2, 3])
with self.assertRaises(TypeError):
filter_set.filter(a__equals=2)