text: import unittest
  from app.models import Comment
  
  
  class TestComment(unittest.TestCase):
      """
      Test class to test the behaviour of the Comment class
      """
  
      def setUp(self):
          """
          Method that will run before every test
          """
          self.new_comment = Comment(
              content="This is a comment")
  
      def test_instance(self):
          """
          Test to check if the new_comment is an instance of Comment
          """
          self.assertTrue(isinstance(self.new_comment, Comment))