def testSortingRepeatedScalarFieldsDefaultComparator(self, message_module):
    """Check some different types with the default comparator."""
    message = message_module.TestAllTypes()

    # TODO(mattp): would testing more scalar types strengthen test?
    message.repeated_int32.append(1)
    message.repeated_int32.append(3)
    message.repeated_int32.append(2)
    message.repeated_int32.sort()
    self.assertEqual(message.repeated_int32[0], 1)
    self.assertEqual(message.repeated_int32[1], 2)
    self.assertEqual(message.repeated_int32[2], 3)
    self.assertEqual(str(message.repeated_int32), str([1, 2, 3]))

    message.repeated_float.append(1.1)
    message.repeated_float.append(1.3)
    message.repeated_float.append(1.2)
    message.repeated_float.sort()
    self.assertAlmostEqual(message.repeated_float[0], 1.1)
    self.assertAlmostEqual(message.repeated_float[1], 1.2)
    self.assertAlmostEqual(message.repeated_float[2], 1.3)

    message.repeated_string.append('a')
    message.repeated_string.append('c')
    message.repeated_string.append('b')
    message.repeated_string.sort()
    self.assertEqual(message.repeated_string[0], 'a')
    self.assertEqual(message.repeated_string[1], 'b')
    self.assertEqual(message.repeated_string[2], 'c')
    self.assertEqual(str(message.repeated_string), str([u'a', u'b', u'c']))

    message.repeated_bytes.append(b'a')
    message.repeated_bytes.append(b'c')
    message.repeated_bytes.append(b'b')
    message.repeated_bytes.sort()
    self.assertEqual(message.repeated_bytes[0], b'a')
    self.assertEqual(message.repeated_bytes[1], b'b')
    self.assertEqual(message.repeated_bytes[2], b'c')
    self.assertEqual(str(message.repeated_bytes), str([b'a', b'b', b'c']))
Check some different types with the default comparator.
deps/protobuf/python/google/protobuf/internal/message_test.py