code: def test_n_cells(self):
      self.assertEqual(self.rnn.n_cells, 2)
      assert self.rnn.n_cells == 2
  
imports: import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import gradient_check
  from chainer import links
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 14 for calling the TestNStepLSTM obj's underlying member method code with example usage: obj.test_n_cells() without return types