text: #!/usr/bin/env python
  #===============================================================================
  # Copyright 2021-2022 Intel Corporation
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  #===============================================================================
  
  import numpy as np
  from numpy.testing import assert_allclose
  
  
  def test_sklearnex_import_train_test_split():
      from sklearnex.model_selection import train_test_split
      X = np.arange(100).reshape((10, 10))
      y = np.arange(10)
  
      split = train_test_split(X, y, test_size=None, train_size=.5)
      X_train, X_test, y_train, y_test = split
      assert len(y_test) == len(y_train)
  
      assert_allclose(X_train[:, 0], y_train * 10)
      assert_allclose(X_test[:, 0], y_test * 10)
  