def test_simple(self): """Tests a simple use case without OrderedDeclaration.""" class ExampleFactory(object): @classmethod def _generate_next_sequence(cls): return 42 holder = DeclarationsHolder({'one': 1, 'two': 2}) self.assertTrue('one' in holder) self.assertTrue('two' in holder) holder.update_base({'two': 3, 'three': 3}) self.assertEqual(1, holder['one']) self.assertEqual(3, holder['two']) self.assertEqual(3, holder['three']) attrs = holder.build_attributes(ExampleFactory) self.assertEqual(1, attrs['one']) self.assertEqual(3, attrs['two']) self.assertEqual(3, attrs['three']) self.assertEqual(42, ExampleFactory.sequence) self.assertEqual(set([('one', 1), ('two', 3), ('three', 3)]), set(holder.items())) attrs = holder.build_attributes(ExampleFactory, False, {'two': 2}) self.assertEqual(1, attrs['one']) self.assertEqual(2, attrs['two']) self.assertEqual(3, attrs['three'])
def test_skip_specials(self): """Makes sure that attributes starting with _ are skipped.""" holder = DeclarationsHolder({'one': 1, '_two': 2}) self.assertTrue('one' in holder) self.assertFalse('_two' in holder) remains = holder.update_base({'_two': 2, 'three': 3}) self.assertTrue('three' in holder) self.assertFalse('_two' in holder) self.assertEqual({'_two': 2}, remains)
def test_empty(self): holder = DeclarationsHolder() self.assertRaises(KeyError, holder.__getitem__, 'one') holder.update_base({'one': 1}) self.assertEqual(1, holder['one'])