text: # Copyright 2020 - 2021 MONAI Consortium
  # 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 unittest
  
  import numpy as np
  
  from monai.transforms.transform import Randomizable
  
  
  class RandTest(Randomizable):
      def randomize(self, data=None):
          pass
  
  
  class TestRandomizable(unittest.TestCase):
      def test_default(self):
          inst = RandTest()
          r1 = inst.R.rand()
          self.assertTrue(isinstance(inst.R, np.random.RandomState))
          inst.set_random_state()
          r2 = inst.R.rand()
          self.assertNotAlmostEqual(r1, r2)
  
      def test_seed(self):
          inst = RandTest()
          inst.set_random_state(seed=123)
          self.assertAlmostEqual(inst.R.rand(), 0.69646918)
          inst.set_random_state(123)
          self.assertAlmostEqual(inst.R.rand(), 0.69646918)
  
      def test_state(self):
          inst = RandTest()
          inst_r = np.random.RandomState(123)
          inst.set_random_state(state=inst_r)
          self.assertAlmostEqual(inst.R.rand(), 0.69646918)
  
  
  if __name__ == "__main__":
      unittest.main()
  