text: """Tests for Persister."""
  
  from common_python.util.persister import Persister
  from common_python import constants as cn
  
  import os
  import unittest
  
  IGNORE_TEST = False
  TEST_PATH = os.path.join(cn.TEST_DIR, "test_persister.pcl")
  OBJECT = [0, 1, 2]
  
  
  class TestPersister(unittest.TestCase):
  
    def setUp(self):
      self.persister = Persister(TEST_PATH)
  
    def tearDown(self):
      if os.path.isfile(TEST_PATH):
        os.remove(TEST_PATH)
  
    def testConstructor(self):
      self.assertEqual(self.persister._path, TEST_PATH)
  
    def testIsExist(self):
      self.assertFalse(self.persister.isExist())
      self.persister.set(OBJECT)
      self.assertTrue(self.persister.isExist())
  
    def testGetAndSet(self):
      self.persister.set(OBJECT)
      an_object = self.persister.get()
      trues = [x == y for x, y in zip(an_object, OBJECT)]
      self.assertTrue(all(trues))
  
    def testRemove(self):
      self.persister.set(OBJECT)
      self.persister.remove()
      self.assertFalse(self.persister.isExist())
      
     
  
  if __name__ == '__main__':
      unittest.main()
  