diff --git a/main/tests.py b/main/tests.py
index 6d72f2e..d7001af 100644
--- a/main/tests.py
+++ b/main/tests.py
@@ -115,7 +115,7 @@ class MakeEngineerTestCase(TestCase):
         self.admin_client.force_login(get_user_model().objects.get(email=self.admin))
 
     @patch('main.extra_func.zenpy')
-    def test_redirect(self):
+    def test_redirect(self, zenpy_mock):
         """
         Функция проверки переадресации пользователя на рабочую страницу после назначения роли engineer.
         """
@@ -123,6 +123,7 @@ class MakeEngineerTestCase(TestCase):
         resp = self.client.post(reverse_lazy('work_become_engineer'))
         self.assertRedirects(resp, reverse('work', args=[user.id]))
         self.assertEqual(resp.status_code, 302)
+        self.assertFalse(zenpy_mock.called)
 
     @patch('main.extra_func.zenpy')
     def test_light_agent_make_engineer(self, zenpy_mock):
@@ -194,7 +195,7 @@ class PasswordResetTestCase(TestCase):
         self.user = '123@test.ru'
         self.email_backend = 'django.core.mail.backends.locmem.EmailBackend'
         self.client = Client()
-        self.client.force_login(User.objects.get(email=self.user))
+        self.client.force_login(get_user_model().objects.get(email=self.user))
 
     def test_redirect(self):
         with self.settings(EMAIL_BACKEND=self.email_backend):
@@ -236,14 +237,14 @@ class PasswordChangeTestCase(TestCase):
     def setUp(self):
         self.user = '123@test.ru'
         self.client = Client()
-        self.client.force_login(User.objects.get(email=self.user))
+        self.client.force_login(get_user_model().objects.get(email=self.user))
         self.set_password()
 
     def set_password(self):
-        user: User = User.objects.get(email=self.user)
+        user: get_user_model() = get_user_model().objects.get(email=self.user)
         user.set_password('ImpossiblyHardPassword')
         user.save()
-        self.client.force_login(User.objects.get(email=self.user))
+        self.client.force_login(get_user_model().objects.get(email=self.user))
 
     def test_change_successful(self):
         self.client.post(
@@ -254,7 +255,7 @@ class PasswordChangeTestCase(TestCase):
                 'new_password2': 'EasyPassword',
             }
         )
-        user = User.objects.get(email=self.user)
+        user = get_user_model().objects.get(email=self.user)
         self.assertTrue(user.check_password('EasyPassword'))
 
     def test_invalid_old_password(self):
@@ -331,9 +332,9 @@ class GetTicketsTestCase(TestCase):
         self.light_agent = '123@test.ru'
         self.engineer = 'customer@example.com'
         self.client = Client()
-        self.client.force_login(User.objects.get(email=self.engineer))
+        self.client.force_login(get_user_model().objects.get(email=self.engineer))
         self.light_agent_client = Client()
-        self.light_agent_client.force_login(User.objects.get(email=self.light_agent))
+        self.light_agent_client.force_login(get_user_model().objects.get(email=self.light_agent))
 
     @patch('main.views.zenpy.get_user')
     @patch('main.extra_func.zenpy')
@@ -342,7 +343,7 @@ class GetTicketsTestCase(TestCase):
         Функция проверки переадресации пользователя на рабочую страницу.
         """
         GetUserMock.return_value = Mock()
-        user = User.objects.get(email=self.engineer)
+        user = get_user_model().objects.get(email=self.engineer)
         resp = self.client.post(reverse('work_get_tickets'))
         self.assertRedirects(resp, reverse('work', args=[user.id]))
         self.assertEqual(resp.status_code, 302)
@@ -421,9 +422,9 @@ class ProfileTestCase(TestCase):
         self.zendesk_agent_email = 'krav-88@mail.ru'
         self.zendesk_admin_email = 'idar.sokurov.05@mail.ru'
         self.client = Client()
-        self.client.force_login(User.objects.get(email=self.zendesk_agent_email))
+        self.client.force_login(get_user_model().objects.get(email=self.zendesk_agent_email))
         self.admin_client = Client()
-        self.admin_client.force_login(User.objects.get(email=self.zendesk_admin_email))
+        self.admin_client.force_login(get_user_model().objects.get(email=self.zendesk_admin_email))
 
     def test_correct_username(self):
         """