text: import unittest
  from credentials import Credential
  
  
  class TestCredential(unittest.TestCase):
      def setUp(self):
          '''
          Set up method to run before each test cases.
          '''
          self.credential = Credential("mercy", "mercie", "twitter.com")  # create credential object
  
      def test_init(self):
          '''
          test_init test case to test if the object is initialized properly
          '''
  
          self.assertEqual(self.credential.username, "mercy")
          self.assertEqual(self.credential.password, "mercie")
          self.assertEqual(self.credential.website, "twitter.com")
  
  
  if __name__ == '__main__':
      unittest.main()
  