code: def test_slice(self):
      self.o.ind = 1
      self.n.ind = 2
      slc = slice(self.o, self.o, self.o)
      check_slc = slice(1, 1, 1)
      self.assertEqual(slc.indices(self.o), check_slc.indices(1))
      slc = slice(self.n, self.n, self.n)
      check_slc = slice(2, 2, 2)
      self.assertEqual(slc.indices(self.n), check_slc.indices(2))
  
imports: import unittest
  from test import support
  import operator
label_desc: Use image node_id 3 for calling the BaseTestCase obj's underlying member method code with example usage: obj.test_slice() without return types