new_contents: #!/usr/bin/env python
  """
  :Author Patrik Valkovic
  :Created 23.06.2017 16:39
  :Licence GNUv3
  Part of grammpy
  
  """
  
  from unittest import TestCase, main
  from grammpy.HashContainer import HashContainer
  
  
  class HashContainerSimpleTest(TestCase):
      def test_emptyCreation(self):
          h = HashContainer()
          self.assertEqual(h.count(), 0)
  
      def test_creationWithArray(self):
          h = HashContainer([0, 1])
          self.assertEqual(h.count(), 2)
          self.assertTrue(h.have(0))
          self.assertTrue(h.have(1))
          self.assertFalse(h.have(2))
          self.assertEqual(h.get(0), 0)
          self.assertEqual(h.get(1), 1)
          self.assertIsNone(h.get(2))
  
      def test_addOne(self):
          h = HashContainer()
          h.add(1)
          self.assertEqual(h.count(), 1)
          self.assertFalse(h.have(0))
          self.assertTrue(h.have(1))
          self.assertFalse(h.have(2))
          self.assertIsNone(h.get(0))
          self.assertEqual(h.get(1), 1)
          self.assertIsNone(h.get(2))
  
  
  if __name__ == '__main__':
      main()
  
subject: Add few tests of HashContainer