code: def test_tuple_invalid_length(self):
      with self.assertRaises(AssertionError):
          conv_nd.as_tuple((1,), 3)
  
imports: import itertools
  import unittest
  import numpy
  from six import moves
  from chainer.backends import cuda
  from chainer import testing
  from chainer.testing import attr
  from chainer.utils import conv_nd
label_desc: Use image node_id 4 for calling the TestAsTuple obj's underlying member method code with example usage: obj.test_tuple_invalid_length() without return types