code: def test_dataset(self):
      from datasets import Dataset as HuggingfaceDataset
  
      # ds = DataSet({"x": ["11sxa", "1sasz"]*100, "y": [0, 1]*100})
      ds = HuggingfaceDataset.from_dict(
          {"x": ["11sxa", "1sasz"] * 100, "y": [0, 1] * 100}
      )
      print(DataSet.from_datasets(ds))
  
imports: import os
  import pytest
  import numpy
  from fastNLP.core.dataset import DataSet, FieldArray, Instance, ApplyResultException
  from fastNLP import logger
label_desc: Use image node_id 5 for calling the TestCase obj's underlying member method code with example usage: obj.test_dataset() without return types