code: def test_endian_int(self):
      if sys.byteorder == "little":
          self.assertIs(c_int.__ctype_le__, c_int)
          self.assertIs(c_int.__ctype_be__.__ctype_le__, c_int)
      else:
          self.assertIs(c_int.__ctype_be__, c_int)
          self.assertIs(c_int.__ctype_le__.__ctype_be__, c_int)
  
      s = c_int.__ctype_be__(0x12345678)
      self.assertEqual(bin(struct.pack(">i", 0x12345678)), "12345678")
      self.assertEqual(bin(s), "12345678")
      self.assertEqual(s.value, 0x12345678)
  
      s = c_int.__ctype_le__(0x12345678)
      self.assertEqual(bin(struct.pack("<i", 0x12345678)), "78563412")
      self.assertEqual(bin(s), "78563412")
      self.assertEqual(s.value, 0x12345678)
  
      s = c_uint.__ctype_be__(0x12345678)
      self.assertEqual(bin(struct.pack(">I", 0x12345678)), "12345678")
      self.assertEqual(bin(s), "12345678")
      self.assertEqual(s.value, 0x12345678)
  
      s = c_uint.__ctype_le__(0x12345678)
      self.assertEqual(bin(struct.pack("<I", 0x12345678)), "78563412")
      self.assertEqual(bin(s), "78563412")
      self.assertEqual(s.value, 0x12345678)
  
imports: import binascii
  import ctypes
  import math
  import struct
  import sys
  import unittest
  from ctypes import Structure, Union, LittleEndianUnion, BigEndianUnion, BigEndianStructure, LittleEndianStructure, POINTER, sizeof, cast, c_byte, c_ubyte, c_char, c_wchar, c_void_p, c_short, c_ushort, c_int, c_uint, c_long, c_ulong, c_longlong, c_ulonglong, c_uint32, c_float, c_double
label_desc: Use image node_id 3 for calling the Test obj's underlying member method code with example usage: obj.test_endian_int() without return types