code: def test_load_solar():
      """Test whether solar dataset can be downloaded."""
      solar = load_solar()
  
      assert isinstance(solar, pd.Series)
      assert len(solar) == 5905
  
file_path: sktime/sktime/datasets/tests/test_datadownload.py
imports: from urllib.request import Request, urlopen
  import numpy
  import pandas
  import pytest
  from sktime.datasets import load_forecastingdata, load_solar, load_UCR_UEA_dataset
  from sktime.datasets.tsf_dataset_names import tsf_all, tsf_all_datasets
label_desc: Use image node_id 1 for calling a global function with example usage: test_load_solar() without return types