text: """Tests for paxplot dataset"""
  
  import io
  import unittest
  import paxplot
  
  
  class PaxplotDatasets(unittest.TestCase):
      def test_tradeoff(self):
          """
          Test for tradeoff dataset
          """
          stream = paxplot.tradeoff()
          self.assertIsInstance(
              stream,
              io.BufferedReader
          )
          stream.close()
  
  
  if __name__ == '__main__':
      unittest.main()
  