code: def test_split_dataset_invalid_type(self):
      original = [1, 2, 3, 4, 5]
      with self.assertRaises(TypeError):
          datasets.split_dataset(original, 3.5)
  
imports: import unittest
  from chainer import datasets
  from chainer import testing
label_desc: Use image node_id 5 for calling the TestSplitDataset obj's underlying member method code with example usage: obj.test_split_dataset_invalid_type() without return types