def testAdd(self): '''Headers.add''' h = Headers({'key1': 'value1'}) self.assertEqual(len(h), 1) self.assertEqual(h.keys(), ['key1']) h.add('key2', 'value2') self.assertEqual(len(h), 2) self.assertSameItems(h.keys(), ['key1', 'key2']) h.add('Key1', 'value2') self.assertEqual(len(h), 3) self.assertSameItems(h.keys(), ['key1', 'key2'])