text: # Copyright 2021 Zilliz. All rights reserved.
  #
  # 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 doctest
  import unittest
  
  import numpy as np
  
  from towhee import DataCollection
  
  import towhee.functional.mixins.parallel
  
  
  class TestParallel(unittest.TestCase):
      """
      tests for data collection parallel execution
      """
  
      def test_example_for_basic_api(self):
          _ = (
              DataCollection.range(50).stream() \
                  .pmap(lambda x: np.random.random((x * 20, x * 20)),3) \
                  .pmap(lambda x: np.dot(x, x), 4).to_list()
          )
          _ = (
              DataCollection.range(10).stream().safe()\
                  .pmap(lambda x: np.random.random((x * 20, x * 20)), 3) \
                  .pmap(lambda x: np.dot(x, x), 4).to_list()
          )
  
  
  def load_tests(loader, tests, ignore):
      #pylint: disable=unused-argument
      tests.addTests(doctest.DocTestSuite(towhee.functional.mixins.parallel))
      return tests
  
  
  if __name__ == '__main__':
      unittest.main()
  