message_test.py 文件源码

def testSortingRepeatedCompositeFieldsCustomComparator(self):
    """Check passing a custom comparator to sort a repeated composite field."""
    message = unittest_pb2.TestAllTypes()

    message.repeated_nested_message.add().bb = 1
    message.repeated_nested_message.add().bb = 3
    message.repeated_nested_message.add().bb = 2
    message.repeated_nested_message.add().bb = 6
    message.repeated_nested_message.add().bb = 5
    message.repeated_nested_message.add().bb = 4
    message.repeated_nested_message.sort(lambda x,y: cmp(x.bb, y.bb))
    self.assertEqual(message.repeated_nested_message[0].bb, 1)
    self.assertEqual(message.repeated_nested_message[1].bb, 2)
    self.assertEqual(message.repeated_nested_message[2].bb, 3)
    self.assertEqual(message.repeated_nested_message[3].bb, 4)
    self.assertEqual(message.repeated_nested_message[4].bb, 5)
    self.assertEqual(message.repeated_nested_message[5].bb, 6)