text: from unittest.mock import patch
  
  from django.test import TestCase
  from django.contrib.auth import get_user_model
  
  from core import models
  
  
  def sample_user(email='ayman@devai.com', password='testpass'):
      """Create a sample user"""
      return get_user_model().objects.create_user(email, password)
  
  
  class ModelTest(TestCase):
  
      def test_create_user_with_email_succesful(self):
          """Test creating a new user with email is succesful"""
          email = 'ayman@dev.ai'
          password = 'aim12345'
          user = get_user_model().objects.create_user(
              email=email,
              password=password
          )
          self.assertEqual(user.email, email)
          self.assertTrue(user.check_password(password))
  
      def test_new_user_normalized(self):
          """Test the email for a new user is normalized"""
          email = 'ayman@DEV.ai'
          user = get_user_model().objects.create_user(email, 'aim12345')
  
          self.assertEqual(user.email, email.lower())
  
      def test_new_user_invalid_email(self):
          """Test creating user with no email raises an error"""
          with self.assertRaises(ValueError):
              get_user_model().objects.create_user(None, 'aim12345')
  
      def test_create_new_super_user(self):
          """Creating super user"""
          user = get_user_model().objects.create_superuser(
              'ayman@dev.ai',
              'aim12345'
          )
          self.assertTrue(user.is_superuser)
          self.assertTrue(user.is_staff)
  
      def test_tag_str(self):
          """Test the tag string representation"""
          tag = models.Tag.objects.create(
              user=sample_user(),
              name='Vegan'
          )
          self.assertEqual(str(tag), tag.name)
  
      def test_ingredient_str(self):
          """Test the ingredient string representation"""
          ingredient = models.Ingredient.objects.create(
              user=sample_user(),
              name='Cucumber'
          )
  
          self.assertEqual(str(ingredient), ingredient.name)
  
      def test_recipe_str(self):
          """Test that the recipe string representation is returned"""
          recipe = models.Recipe.objects.create(
              user=sample_user(),
              title='Steak and mashroom sauce',
              time_minute=5,
              price=5.00,
          )
  
          self.assertEqual(str(recipe), recipe.title)
  
      @patch('uuid.uuid4')
      def test_recipe_file_name_uuid(self, mock_uuid):
          """Test that the image is saved at the right location"""
          uuid = 'test-uuid'
          mock_uuid.return_value = uuid
          file_path = models.recipe_image_file_path(None, 'my_image.jpg')
  
          exp_path = f'uploads/recipe/{uuid}.jpg'
  
          self.assertEqual(file_path, exp_path)
  