code: def test_parameters_for_axis_0(self):
      # expecting no exception
      train_test_split(make_dataset(2, 10), axis=0, test_size=1)
  
imports: import pytest
  from darts.utils.model_selection import MODEL_AWARE, SIMPLE, train_test_split
  from darts.utils.timeseries_generation import constant_timeseries
label_desc: Use image node_id 1 for calling the TestClassTrainTestSplit obj's underlying member method code with example usage: obj.test_parameters_for_axis_0() without return types