text: import unittest
  from app.models import Article
  
  class ArticleTest(unittest.TestCase):
      '''
      Test class to test the beahviour of the Article class
      '''
  
      def setUp(self):
          '''
          method that will run before each test case
          '''
          self.new_article = Article('1234',"john",'description of the article','https://abcnews.go.com/theview/video/andrea-kelly-details-allegations-abuse-husband-kelly-58286731','https://s.abcnews.com/images/theview/181004_view_andrea_1134_hpMain_16x9_992.jpg','2019-10-04T18:14:14Z','content of the article')
  
      def test_instance(self):
          self.assertTrue(isinstance(self.new_article,Article))
  
  if __name__ == '__main__':
      unittest.main()
  
  