text: import unittest
  from app.models import User, Post
  from app import db
  
  
  class PostModelTest(unittest.TestCase):
  
      def setUp(self):
          self.user_Betty = User(
              username="Betty", password="1234", email="betty75@gmail.com")
          self.new_post = Post(
              title="code", body="coding rocks", user_id=self.user_Betty.id)
  
      def tearDown(self):
          Post.query.delete()
          User.query.delete()
  
      def test_instance(self):
          self.assertTrue(isinstance(self.new_post, Post))
  
      def test_check_instance_variables(self):
          self.assertEquals(self.new_post.title, 'code')
          self.assertEquals(self.new_post.body, "coding rocks")
          self.assertEquals(self.new_post.user_id, self.user_abdi.id)
  
      def test_save_blog(self):
          self.new_post.save_post()
          self.assertTrue(len(Post.query.all()) > 0)
  
      def test_get_posts(self):
  
          self.new_post.save_blog()
          posts = Post.get_posts()
          self.assertTrue(len(posts) == 1
  