code: def test_getitem(self):
      for idx in range(-len(self.base), len(self.base)):
          self.assertEqual(self.lazy[idx], self.base[idx])
  
imports: from operator import eq, ge, gt, le, lt, ne, add, concat, not_, sub, and_, or_, xor
  import os.path
  import sys
  import unittest
  import warnings
  from pytz.lazy import LazyList, LazySet
label_desc: Use image node_id 20 for calling the LazyListTestCase obj's underlying member method code with example usage: obj.test_getitem() without return types