code: def test_invalid_length(self):
      with self.assertRaises(ValueError):
          TupleDataset(self.dataset, ("item3", np.arange(5)))
  
file_path: chainercv/tests/chainer_experimental_tests/datasets_tests/sliceable_tests/test_tuple_dataset.py
imports: import numpy
  import unittest
  from chainer import testing
  from chainercv.chainer_experimental.datasets.sliceable import SliceableDataset
  from chainercv.chainer_experimental.datasets.sliceable import TupleDataset
label_desc: Use image node_id 4 for calling the TestTupleDataset obj's underlying member method code with example usage: obj.test_invalid_length() without return types