code: def test_small_lshift(self):
      self.assertEqual(42 << 1, 84)
      self.assertEqual((-42) << 1, -84)
      self.assertEqual(561 << 1, 1122)
      self.assertEqual((-561) << 1, -1122)
      self.assertEqual(2**127 << 1, 2**128)
      self.assertEqual(-(2**127) << 1, -(2**128))
  
imports: import unittest
  from test import support
  import sys
  import random
  import math
  import array
label_desc: Use image node_id 36 for calling the LongTest obj's underlying member method code with example usage: obj.test_small_lshift() without return types