Revert "Remove SITE_ID from settings."

This reverts commit a804e243.

course_discovery/apps/api/tests/mixins.py

-from django.test import RequestFactory
+from django.conf import settings
+from django.contrib.sites.models import Site
 
 from course_discovery.apps.core.tests.factories import PartnerFactory, SiteFactory
 
 
-class SiteMixin(object):
+class PartnerMixin(object):
     def setUp(self):
-        super(SiteMixin, self).setUp()
-        domain = 'testserver.fake'
-        self.client = self.client_class(SERVER_NAME=domain)
-        self.site = SiteFactory(domain=domain)
+        super(PartnerMixin, self).setUp()
+        Site.objects.all().delete()
+        self.site = SiteFactory(id=settings.SITE_ID)
         self.partner = PartnerFactory(site=self.site)
-
-        self.request = RequestFactory(SERVER_NAME=self.site.domain).get('')
-        self.request.site = self.site

course_discovery/apps/api/tests/test_serializers.py

@@ -21,7 +21,7 @@ from course_discovery.apps.api.serializers import (
     ProgramSerializer, ProgramTypeSerializer, SeatSerializer, SubjectSerializer, TypeaheadCourseRunSearchSerializer,
     TypeaheadProgramSearchSerializer, VideoSerializer
 )
-from course_discovery.apps.api.tests.mixins import SiteMixin
+from course_discovery.apps.api.tests.mixins import PartnerMixin
 from course_discovery.apps.catalogs.tests.factories import CatalogFactory
 from course_discovery.apps.core.models import User
 from course_discovery.apps.core.tests.factories import UserFactory
@@ -97,7 +97,7 @@ class CatalogSerializerTests(ElasticsearchTestMixin, TestCase):
         self.assertEqual(User.objects.filter(username=username).count(), 0)  # pylint: disable=no-member
 
 
-class MinimalCourseSerializerTests(SiteMixin, TestCase):
+class MinimalCourseSerializerTests(PartnerMixin, TestCase):
     serializer_class = MinimalCourseSerializer
 
     def get_expected_data(self, course, request):

course_discovery/apps/api/v1/tests/test_views/mixins.py

@@ -12,7 +12,7 @@ from course_discovery.apps.api.serializers import (
     CourseWithProgramsSerializer, FlattenedCourseRunWithCourseSerializer, MinimalProgramSerializer,
     OrganizationSerializer, PersonSerializer, ProgramSerializer, ProgramTypeSerializer
 )
-from course_discovery.apps.api.tests.mixins import SiteMixin
+from course_discovery.apps.api.tests.mixins import PartnerMixin
 
 
 class SerializationMixin(object):
@@ -92,5 +92,5 @@ class OAuth2Mixin(object):
         )
 
 
-class APITestCase(SiteMixin, RestAPITestCase):
+class APITestCase(PartnerMixin, RestAPITestCase):
     pass

course_discovery/apps/api/v1/tests/test_views/test_affiliate_window.py

@@ -7,9 +7,10 @@ import ddt
 import pytz
 from lxml import etree
 from rest_framework.reverse import reverse
+from rest_framework.test import APITestCase
 
 from course_discovery.apps.api.serializers import AffiliateWindowSerializer
-from course_discovery.apps.api.v1.tests.test_views.mixins import APITestCase, SerializationMixin
+from course_discovery.apps.api.v1.tests.test_views.mixins import SerializationMixin
 from course_discovery.apps.catalogs.tests.factories import CatalogFactory
 from course_discovery.apps.core.tests.factories import UserFactory
 from course_discovery.apps.core.tests.mixins import ElasticsearchTestMixin
@@ -45,7 +46,8 @@ class AffiliateWindowViewSetTests(ElasticsearchTestMixin, SerializationMixin, AP
 
     def test_affiliate_with_supported_seats(self):
         """ Verify that endpoint returns course runs for verified and professional seats only. """
-        response = self.client.get(self.affiliate_url)
+        with self.assertNumQueries(9):
+            response = self.client.get(self.affiliate_url)
 
         self.assertEqual(response.status_code, 200)
         root = ET.fromstring(response.content)

course_discovery/apps/api/v1/tests/test_views/test_catalogs.py

@@ -8,9 +8,10 @@ import pytz
 import responses
 from django.contrib.auth import get_user_model
 from rest_framework.reverse import reverse
+from rest_framework.test import APITestCase
 
 from course_discovery.apps.api.tests.jwt_utils import generate_jwt_header_for_user
-from course_discovery.apps.api.v1.tests.test_views.mixins import APITestCase, OAuth2Mixin, SerializationMixin
+from course_discovery.apps.api.v1.tests.test_views.mixins import OAuth2Mixin, SerializationMixin
 from course_discovery.apps.catalogs.models import Catalog
 from course_discovery.apps.catalogs.tests.factories import CatalogFactory
 from course_discovery.apps.core.tests.factories import UserFactory
@@ -30,7 +31,6 @@ class CatalogViewSetTests(ElasticsearchTestMixin, SerializationMixin, OAuth2Mixi
     def setUp(self):
         super(CatalogViewSetTests, self).setUp()
         self.user = UserFactory(is_staff=True, is_superuser=True)
-        self.request.user = self.user
         self.client.force_authenticate(self.user)
         self.catalog = CatalogFactory(query='title:abc*')
         enrollment_end = datetime.datetime.now(pytz.UTC) + datetime.timedelta(days=30)

course_discovery/apps/api/v1/tests/test_views/test_courses.py

@@ -21,7 +21,6 @@ class CourseViewSetTests(SerializationMixin, APITestCase):
     def setUp(self):
         super(CourseViewSetTests, self).setUp()
         self.user = UserFactory(is_staff=True, is_superuser=True)
-        self.request.user = self.user
         self.client.login(username=self.user.username, password=USER_PASSWORD)
         self.course = CourseFactory(partner=self.partner)
 

course_discovery/apps/api/v1/tests/test_views/test_organizations.py

@@ -13,7 +13,6 @@ class OrganizationViewSetTests(SerializationMixin, APITestCase):
     def setUp(self):
         super(OrganizationViewSetTests, self).setUp()
         self.user = UserFactory(is_staff=True, is_superuser=True)
-        self.request.user = self.user
         self.client.login(username=self.user.username, password=USER_PASSWORD)
 
     def test_authentication(self):
@@ -29,14 +28,16 @@ class OrganizationViewSetTests(SerializationMixin, APITestCase):
         """ Asserts the response data (only) contains the expected organizations. """
         actual = response.data
         serializer_data = self.serialize_organization(organizations, many=many)
+
         if many:
             actual = actual['results']
+            actual = sorted(actual, key=lambda k: k['uuid'])
+            serializer_data = sorted(serializer_data, key=lambda k: k['uuid'])
 
-        self.assertCountEqual(actual, serializer_data)
+        self.assertEqual(actual, serializer_data)
 
     def assert_list_uuid_filter(self, organizations, expected_query_count):
         """ Asserts the list endpoint supports filtering by UUID. """
-        organizations = sorted(organizations, key=lambda o: o.created)
         with self.assertNumQueries(expected_query_count):
             uuids = ','.join([organization.uuid.hex for organization in organizations])
             url = '{root}?uuids={uuids}'.format(root=self.list_path, uuids=uuids)

course_discovery/apps/api/v1/tests/test_views/test_people.py

@@ -7,8 +7,7 @@ from rest_framework.reverse import reverse
 from rest_framework.test import APITestCase
 from testfixtures import LogCapture
 
-from course_discovery.apps.api.tests.mixins import SiteMixin
-from course_discovery.apps.api.v1.tests.test_views.mixins import SerializationMixin
+from course_discovery.apps.api.v1.tests.test_views.mixins import PartnerMixin, SerializationMixin
 from course_discovery.apps.api.v1.views.people import logger as people_logger
 from course_discovery.apps.core.tests.factories import UserFactory
 from course_discovery.apps.course_metadata.models import Person
@@ -20,7 +19,7 @@ User = get_user_model()
 
 
 @ddt.ddt
-class PersonViewSetTests(SerializationMixin, SiteMixin, APITestCase):
+class PersonViewSetTests(SerializationMixin, PartnerMixin, APITestCase):
     """ Tests for the person resource. """
     people_list_url = reverse('api:v1:person-list')
 

course_discovery/apps/api/v1/tests/test_views/test_program_types.py

 from django.urls import reverse
+from rest_framework.test import APITestCase
 
-from course_discovery.apps.api.v1.tests.test_views.mixins import APITestCase, SerializationMixin
+from course_discovery.apps.api.v1.tests.test_views.mixins import SerializationMixin
 from course_discovery.apps.core.tests.factories import USER_PASSWORD, UserFactory
 from course_discovery.apps.course_metadata.models import ProgramType
 from course_discovery.apps.course_metadata.tests.factories import ProgramTypeFactory

course_discovery/apps/api/v1/tests/test_views/test_programs.py

@@ -24,7 +24,6 @@ class ProgramViewSetTests(SerializationMixin, APITestCase):
     def setUp(self):
         super(ProgramViewSetTests, self).setUp()
         self.user = UserFactory(is_staff=True, is_superuser=True)
-        self.request.user = self.user
         self.client.login(username=self.user.username, password=USER_PASSWORD)
 
         # Clear the cache between test cases, so they don't interfere with each other.

course_discovery/apps/api/v1/tests/test_views/test_search.py

@@ -155,9 +155,7 @@ class CourseRunSearchViewSetTests(SerializationMixin, LoginMixin, ElasticsearchT
         return course_run, response_data
 
     def build_facet_url(self, params):
-        return 'http://testserver.fake{path}?{query}'.format(
-            path=self.faceted_path, query=urllib.parse.urlencode(params)
-        )
+        return 'http://testserver{path}?{query}'.format(path=self.faceted_path, query=urllib.parse.urlencode(params))
 
     def test_invalid_query_facet(self):
         """ Verify the endpoint returns HTTP 400 if an invalid facet is requested. """

course_discovery/apps/core/tests/test_lookups.py

@@ -3,11 +3,10 @@ import json
 from django.test import TestCase
 from django.urls import reverse
 
-from course_discovery.apps.api.tests.mixins import SiteMixin
 from course_discovery.apps.core.tests.factories import USER_PASSWORD, UserFactory
 
 
-class UserAutocompleteTests(SiteMixin, TestCase):
+class UserAutocompleteTests(TestCase):
     """ Tests for user autocomplete lookups."""
 
     def setUp(self):

course_discovery/apps/core/tests/test_throttles.py

@@ -2,13 +2,12 @@ from django.core.cache import cache
 from django.urls import reverse
 from rest_framework.test import APITestCase
 
-from course_discovery.apps.api.tests.mixins import SiteMixin
 from course_discovery.apps.core.models import UserThrottleRate
 from course_discovery.apps.core.tests.factories import USER_PASSWORD, UserFactory
 from course_discovery.apps.core.throttles import OverridableUserRateThrottle
 
 
-class RateLimitingTest(SiteMixin, APITestCase):
+class RateLimitingTest(APITestCase):
     """
     Testing rate limiting of API calls.
     """

course_discovery/apps/core/tests/test_views.py

@@ -9,23 +9,33 @@ from django.test.utils import override_settings
 from django.urls import reverse
 from django.utils.encoding import force_text
 
-from course_discovery.apps.api.tests.mixins import SiteMixin
 from course_discovery.apps.core.constants import Status
+from course_discovery.apps.core.views import get_database_status
 
 User = get_user_model()
 
 
-class HealthTests(SiteMixin, TestCase):
+class HealthTests(TestCase):
     """Tests of the health endpoint."""
 
+    def test_getting_database_ok_status(self):
+        """Method should return the OK status."""
+        status = get_database_status()
+        self.assertEqual(status, Status.OK)
+
+    def test_getting_database_unavailable_status(self):
+        """Method should return the unavailable status when a DatabaseError occurs."""
+        with mock.patch('django.db.backends.base.base.BaseDatabaseWrapper.cursor', side_effect=DatabaseError):
+            status = get_database_status()
+            self.assertEqual(status, Status.UNAVAILABLE)
+
     def test_all_services_available(self):
         """Test that the endpoint reports when all services are healthy."""
         self._assert_health(200, Status.OK, Status.OK)
 
-    @mock.patch('django.contrib.sites.middleware.get_current_site', mock.Mock(return_value=None))
     def test_database_outage(self):
         """Test that the endpoint reports when the database is unavailable."""
-        with mock.patch('django.db.backends.base.base.BaseDatabaseWrapper.cursor', side_effect=DatabaseError):
+        with mock.patch('course_discovery.apps.core.views.get_database_status', return_value=Status.UNAVAILABLE):
             self._assert_health(503, Status.UNAVAILABLE, Status.UNAVAILABLE)
 
     def _assert_health(self, status_code, overall_status, database_status):
@@ -44,7 +54,7 @@ class HealthTests(SiteMixin, TestCase):
         self.assertJSONEqual(force_text(response.content), expected_data)
 
 
-class AutoAuthTests(SiteMixin, TestCase):
+class AutoAuthTests(TestCase):
     """ Auto Auth view tests. """
     AUTO_AUTH_PATH = reverse('auto_auth')
 

course_discovery/apps/core/views.py

@@ -15,6 +15,18 @@ logger = logging.getLogger(__name__)
 User = get_user_model()
 
 
+def get_database_status():
+    """Run a database query to see if the database is responsive."""
+    try:
+        cursor = connection.cursor()
+        cursor.execute("SELECT 1")
+        cursor.fetchone()
+        cursor.close()
+        return Status.OK
+    except DatabaseError:
+        return Status.UNAVAILABLE
+
+
 @transaction.non_atomic_requests
 def health(_):
     """Allows a load balancer to verify this service is up.
@@ -32,15 +44,7 @@ def health(_):
         >>> response.content
         '{"overall_status": "OK", "detailed_status": {"database_status": "OK"}}'
     """
-
-    try:
-        cursor = connection.cursor()
-        cursor.execute("SELECT 1")
-        cursor.fetchone()
-        cursor.close()
-        database_status = Status.OK
-    except DatabaseError:
-        database_status = Status.UNAVAILABLE
+    database_status = get_database_status()
 
     overall_status = Status.OK if (database_status == Status.OK) else Status.UNAVAILABLE
 

course_discovery/apps/course_metadata/tests/test_admin.py

@@ -11,7 +11,6 @@ from selenium.webdriver.support import expected_conditions as EC
 from selenium.webdriver.support.ui import Select
 from selenium.webdriver.support.wait import WebDriverWait
 
-from course_discovery.apps.api.tests.mixins import SiteMixin
 from course_discovery.apps.core.models import Partner
 from course_discovery.apps.core.tests.factories import USER_PASSWORD, UserFactory
 from course_discovery.apps.core.tests.helpers import make_image_file
@@ -24,7 +23,7 @@ from course_discovery.apps.course_metadata.tests import factories
 
 # pylint: disable=no-member
 @ddt.ddt
-class AdminTests(SiteMixin, TestCase):
+class AdminTests(TestCase):
     """ Tests Admin page."""
 
     def setUp(self):
@@ -191,7 +190,7 @@ class AdminTests(SiteMixin, TestCase):
         self.assertEqual(response.status_code, 200)
 
 
-class ProgramAdminFunctionalTests(SiteMixin, LiveServerTestCase):
+class ProgramAdminFunctionalTests(LiveServerTestCase):
     """ Functional Tests for Admin page."""
     # Required for access to initial data loaded in migrations (e.g., LanguageTags).
     serialized_rollback = True
@@ -225,6 +224,7 @@ class ProgramAdminFunctionalTests(SiteMixin, LiveServerTestCase):
 
     def setUp(self):
         super().setUp()
+
         # ContentTypeManager uses a cache to speed up ContentType retrieval. This
         # cache persists across tests. This is fine in the context of a regular
         # TestCase which uses a transaction to reset the database between tests.
@@ -238,9 +238,6 @@ class ProgramAdminFunctionalTests(SiteMixin, LiveServerTestCase):
         # stale ContentType objects from being used.
         ContentType.objects.clear_cache()
 
-        self.site.domain = self.live_server_url.strip('http://')
-        self.site.save()
-
         self.course_runs = factories.CourseRunFactory.create_batch(2)
         self.courses = [course_run.course for course_run in self.course_runs]
 
@@ -357,7 +354,7 @@ class ProgramAdminFunctionalTests(SiteMixin, LiveServerTestCase):
         self.assertEqual(self.program.subtitle, subtitle)
 
 
-class ProgramEligibilityFilterTests(SiteMixin, TestCase):
+class ProgramEligibilityFilterTests(TestCase):
     """ Tests for Program Eligibility Filter class. """
     parameter_name = 'eligible_for_one_click_purchase'
 

course_discovery/apps/course_metadata/tests/test_lookups.py

@@ -5,7 +5,6 @@ import ddt
 from django.test import TestCase
 from django.urls import reverse
 
-from course_discovery.apps.api.tests.mixins import SiteMixin
 from course_discovery.apps.core.tests.factories import USER_PASSWORD, UserFactory
 from course_discovery.apps.course_metadata.tests.factories import (
     CourseFactory, CourseRunFactory, OrganizationFactory, PersonFactory, PositionFactory
@@ -17,7 +16,7 @@ from course_discovery.apps.publisher.tests import factories
 
 
 @ddt.ddt
-class AutocompleteTests(SiteMixin, TestCase):
+class AutocompleteTests(TestCase):
     """ Tests for autocomplete lookups."""
     def setUp(self):
         super(AutocompleteTests, self).setUp()
@@ -119,7 +118,7 @@ class AutocompleteTests(SiteMixin, TestCase):
 
 
 @ddt.ddt
-class AutoCompletePersonTests(SiteMixin, TestCase):
+class AutoCompletePersonTests(TestCase):
     """
     Tests for person autocomplete lookups
     """

course_discovery/apps/ietf_language_tags/tests/test_lookups.py

@@ -4,14 +4,13 @@ import ddt
 from django.test import TestCase
 from django.urls import reverse
 
-from course_discovery.apps.api.tests.mixins import SiteMixin
 from course_discovery.apps.core.tests.factories import USER_PASSWORD, UserFactory
 from course_discovery.apps.ietf_language_tags.models import LanguageTag
 
 
 # pylint: disable=no-member
 @ddt.ddt
-class AutocompleteTests(SiteMixin, TestCase):
+class AutocompleteTests(TestCase):
     """ Tests for autocomplete lookups."""
     def setUp(self):
         super(AutocompleteTests, self).setUp()

course_discovery/apps/publisher/api/serializers.py

@@ -40,8 +40,7 @@ class CourseUserRoleSerializer(serializers.ModelSerializer):
         former_user = instance.user
         instance = super(CourseUserRoleSerializer, self).update(instance, validated_data)
         if not instance.role == PublisherUserRole.CourseTeam:
-            request = self.context['request']
-            send_change_role_assignment_email(instance, former_user, request.site)
+            send_change_role_assignment_email(instance, former_user)
 
         return instance
 
@@ -105,7 +104,6 @@ class CourseRunSerializer(serializers.ModelSerializer):
         instance = super(CourseRunSerializer, self).update(instance, validated_data)
         preview_url = validated_data.get('preview_url')
         lms_course_id = validated_data.get('lms_course_id')
-        request = self.context['request']
 
         if preview_url:
             # Change ownership to CourseTeam.
@@ -113,10 +111,10 @@ class CourseRunSerializer(serializers.ModelSerializer):
 
         if waffle.switch_is_active('enable_publisher_email_notifications'):
             if preview_url:
-                send_email_preview_page_is_available(instance, site=request.site)
+                send_email_preview_page_is_available(instance)
 
             elif lms_course_id:
-                send_email_for_studio_instance_created(instance, site=request.site)
+                send_email_for_studio_instance_created(instance)
 
         return instance
 
@@ -169,7 +167,7 @@ class CourseStateSerializer(serializers.ModelSerializer):
         state = validated_data.get('name')
         request = self.context.get('request')
         try:
-            instance.change_state(state=state, user=request.user, site=request.site)
+            instance.change_state(state=state, user=request.user)
         except TransitionNotAllowed:
             # pylint: disable=no-member
             raise serializers.ValidationError(
@@ -206,7 +204,7 @@ class CourseRunStateSerializer(serializers.ModelSerializer):
 
         if state:
             try:
-                instance.change_state(state=state, user=request.user, site=request.site)
+                instance.change_state(state=state, user=request.user)
             except TransitionNotAllowed:
                 # pylint: disable=no-member
                 raise serializers.ValidationError(
@@ -225,6 +223,6 @@ class CourseRunStateSerializer(serializers.ModelSerializer):
             instance.save()
 
             if waffle.switch_is_active('enable_publisher_email_notifications'):
-                send_email_preview_accepted(instance.course_run, request.site)
+                send_email_preview_accepted(instance.course_run)
 
         return instance

course_discovery/apps/publisher/api/tests/test_serializers.py

@@ -5,7 +5,6 @@ from django.test import RequestFactory, TestCase
 from opaque_keys.edx.keys import CourseKey
 from rest_framework.exceptions import ValidationError
 
-from course_discovery.apps.api.tests.mixins import SiteMixin
 from course_discovery.apps.core.tests.factories import UserFactory
 from course_discovery.apps.core.tests.helpers import make_image_file
 from course_discovery.apps.course_metadata.tests import toggle_switch
@@ -21,7 +20,7 @@ from course_discovery.apps.publisher.tests.factories import (CourseFactory, Cour
                                                              OrganizationExtensionFactory, SeatFactory)
 
 
-class CourseUserRoleSerializerTests(SiteMixin, TestCase):
+class CourseUserRoleSerializerTests(TestCase):
     serializer_class = CourseUserRoleSerializer
 
     def setUp(self):
@@ -29,7 +28,6 @@ class CourseUserRoleSerializerTests(SiteMixin, TestCase):
         self.request = RequestFactory()
         self.course_user_role = CourseUserRoleFactory(role=PublisherUserRole.MarketingReviewer)
         self.request.user = self.course_user_role.user
-        self.request.site = self.site
 
     def get_expected_data(self):
         """ Helper method which will return expected serialize data. """
@@ -140,7 +138,7 @@ class CourseRunSerializerTests(TestCase):
         """
         self.course_run.preview_url = ''
         self.course_run.save()
-        serializer = self.serializer_class(self.course_run, context={'request': self.request})
+        serializer = self.serializer_class(self.course_run)
         serializer.update(self.course_run, {'preview_url': 'https://example.com/abc/course'})
 
         self.assertEqual(self.course_state.owner_role, PublisherUserRole.CourseTeam)
@@ -248,12 +246,13 @@ class CourseRevisionSerializerTests(TestCase):
         self.assertDictEqual(serializer.data, expected)
 
 
-class CourseStateSerializerTests(SiteMixin, TestCase):
+class CourseStateSerializerTests(TestCase):
     serializer_class = CourseStateSerializer
 
     def setUp(self):
         super(CourseStateSerializerTests, self).setUp()
         self.course_state = CourseStateFactory(name=CourseStateChoices.Draft)
+        self.request = RequestFactory()
         self.user = UserFactory()
         self.request.user = self.user
 
@@ -290,13 +289,14 @@ class CourseStateSerializerTests(SiteMixin, TestCase):
             serializer.update(self.course_state, data)
 
 
-class CourseRunStateSerializerTests(SiteMixin, TestCase):
+class CourseRunStateSerializerTests(TestCase):
     serializer_class = CourseRunStateSerializer
 
     def setUp(self):
         super(CourseRunStateSerializerTests, self).setUp()
         self.run_state = CourseRunStateFactory(name=CourseRunStateChoices.Draft)
         self.course_run = self.run_state.course_run
+        self.request = RequestFactory()
         self.user = UserFactory()
         self.request.user = self.user
         CourseStateFactory(name=CourseStateChoices.Approved, course=self.course_run.course)

course_discovery/apps/publisher/api/tests/test_views.py

@@ -4,6 +4,7 @@ from urllib.parse import quote
 
 import ddt
 from django.contrib.auth.models import Group
+from django.contrib.sites.models import Site
 from django.core import mail
 from django.db import IntegrityError
 from django.test import TestCase
@@ -13,7 +14,6 @@ from mock import mock, patch
 from opaque_keys.edx.keys import CourseKey
 from testfixtures import LogCapture
 
-from course_discovery.apps.api.tests.mixins import SiteMixin
 from course_discovery.apps.core.tests.factories import USER_PASSWORD, UserFactory
 from course_discovery.apps.core.tests.helpers import make_image_file
 from course_discovery.apps.course_metadata.tests import toggle_switch
@@ -28,7 +28,7 @@ from course_discovery.apps.publisher.tests import JSON_CONTENT_TYPE, factories
 
 
 @ddt.ddt
-class CourseRoleAssignmentViewTests(SiteMixin, TestCase):
+class CourseRoleAssignmentViewTests(TestCase):
 
     def setUp(self):
         super(CourseRoleAssignmentViewTests, self).setUp()
@@ -139,7 +139,7 @@ class CourseRoleAssignmentViewTests(SiteMixin, TestCase):
         self.assertEqual(len(mail.outbox), 1)
 
 
-class OrganizationGroupUserViewTests(SiteMixin, TestCase):
+class OrganizationGroupUserViewTests(TestCase):
 
     def setUp(self):
         super(OrganizationGroupUserViewTests, self).setUp()
@@ -189,7 +189,7 @@ class OrganizationGroupUserViewTests(SiteMixin, TestCase):
         )
 
 
-class UpdateCourseRunViewTests(SiteMixin, TestCase):
+class UpdateCourseRunViewTests(TestCase):
 
     def setUp(self):
         super(UpdateCourseRunViewTests, self).setUp()
@@ -313,7 +313,7 @@ class UpdateCourseRunViewTests(SiteMixin, TestCase):
 
         body = mail.outbox[0].body.strip()
         self.assertIn(expected_body, body)
-        page_url = 'https://{host}{path}'.format(host=self.site.domain.strip('/'), path=object_path)
+        page_url = 'https://{host}{path}'.format(host=Site.objects.get_current().domain.strip('/'), path=object_path)
         self.assertIn(page_url, body)
 
     def test_update_preview_url(self):
@@ -377,7 +377,7 @@ class UpdateCourseRunViewTests(SiteMixin, TestCase):
         self.assertEqual(len(mail.outbox), 0)
 
 
-class CourseRevisionDetailViewTests(SiteMixin, TestCase):
+class CourseRevisionDetailViewTests(TestCase):
 
     def setUp(self):
         super(CourseRevisionDetailViewTests, self).setUp()
@@ -431,7 +431,7 @@ class CourseRevisionDetailViewTests(SiteMixin, TestCase):
         return self.client.get(path=course_revision_path)
 
 
-class ChangeCourseStateViewTests(SiteMixin, TestCase):
+class ChangeCourseStateViewTests(TestCase):
 
     def setUp(self):
         super(ChangeCourseStateViewTests, self).setUp()
@@ -530,7 +530,7 @@ class ChangeCourseStateViewTests(SiteMixin, TestCase):
 
         body = mail.outbox[0].body.strip()
         object_path = reverse('publisher:publisher_course_detail', kwargs={'pk': self.course.id})
-        page_url = 'https://{host}{path}'.format(host=self.site.domain.strip('/'), path=object_path)
+        page_url = 'https://{host}{path}'.format(host=Site.objects.get_current().domain.strip('/'), path=object_path)
         self.assertIn(page_url, body)
 
     def test_change_course_state_with_error(self):
@@ -587,7 +587,7 @@ class ChangeCourseStateViewTests(SiteMixin, TestCase):
         self._assert_email_sent(course_team_user, subject)
 
 
-class ChangeCourseRunStateViewTests(SiteMixin, TestCase):
+class ChangeCourseRunStateViewTests(TestCase):
 
     def setUp(self):
         super(ChangeCourseRunStateViewTests, self).setUp()
@@ -796,7 +796,7 @@ class ChangeCourseRunStateViewTests(SiteMixin, TestCase):
         self.assertIn('has been published', mail.outbox[0].body.strip())
 
 
-class RevertCourseByRevisionTests(SiteMixin, TestCase):
+class RevertCourseByRevisionTests(TestCase):
 
     def setUp(self):
         super(RevertCourseByRevisionTests, self).setUp()
@@ -860,7 +860,7 @@ class RevertCourseByRevisionTests(SiteMixin, TestCase):
         return self.client.put(path=course_revision_path)
 
 
-class CoursesAutoCompleteTests(SiteMixin, TestCase):
+class CoursesAutoCompleteTests(TestCase):
     """ Tests for course autocomplete."""
 
     def setUp(self):
@@ -927,7 +927,7 @@ class CoursesAutoCompleteTests(SiteMixin, TestCase):
         self.assertEqual(len(data['results']), expected_length)
 
 
-class AcceptAllByRevisionTests(SiteMixin, TestCase):
+class AcceptAllByRevisionTests(TestCase):
 
     def setUp(self):
         super(AcceptAllByRevisionTests, self).setUp()

course_discovery/apps/publisher/models.py

@@ -604,7 +604,7 @@ class CourseState(TimeStampedModel, ChangedByMixin):
         # TODO: send email etc.
         pass
 
-    def change_state(self, state, user, site=None):
+    def change_state(self, state, user):
         """
         Change course workflow state and ownership also send emails if required.
         """
@@ -619,12 +619,12 @@ class CourseState(TimeStampedModel, ChangedByMixin):
             elif user_role.role == PublisherUserRole.CourseTeam:
                 self.change_owner_role(PublisherUserRole.MarketingReviewer)
                 if is_notifications_enabled:
-                    emails.send_email_for_seo_review(self.course, site)
+                    emails.send_email_for_seo_review(self.course)
 
             self.review()
 
             if is_notifications_enabled:
-                emails.send_email_for_send_for_review(self.course, user, site)
+                emails.send_email_for_send_for_review(self.course, user)
 
         elif state == CourseStateChoices.Approved:
             user_role = self.course.course_user_roles.get(user=user)
@@ -633,7 +633,7 @@ class CourseState(TimeStampedModel, ChangedByMixin):
             self.approved()
 
             if is_notifications_enabled:
-                emails.send_email_for_mark_as_reviewed(self.course, user, site)
+                emails.send_email_for_mark_as_reviewed(self.course, user)
 
         self.save()
 
@@ -731,10 +731,10 @@ class CourseRunState(TimeStampedModel, ChangedByMixin):
         pass
 
     @transition(field=name, source=CourseRunStateChoices.Approved, target=CourseRunStateChoices.Published)
-    def published(self, site):
-        emails.send_course_run_published_email(self.course_run, site)
+    def published(self):
+        emails.send_course_run_published_email(self.course_run)
 
-    def change_state(self, state, user, site=None):
+    def change_state(self, state, user):
         """
         Change course run workflow state and ownership also send emails if required.
         """
@@ -750,7 +750,7 @@ class CourseRunState(TimeStampedModel, ChangedByMixin):
             self.review()
 
             if waffle.switch_is_active('enable_publisher_email_notifications'):
-                emails.send_email_for_send_for_review_course_run(self.course_run, user, site)
+                emails.send_email_for_send_for_review_course_run(self.course_run, user)
 
         elif state == CourseRunStateChoices.Approved:
             user_role = self.course_run.course.course_user_roles.get(user=user)
@@ -759,11 +759,11 @@ class CourseRunState(TimeStampedModel, ChangedByMixin):
             self.approved()
 
             if waffle.switch_is_active('enable_publisher_email_notifications'):
-                emails.send_email_for_mark_as_reviewed_course_run(self.course_run, user, site)
-                emails.send_email_to_publisher(self.course_run, user, site)
+                emails.send_email_for_mark_as_reviewed_course_run(self.course_run, user)
+                emails.send_email_to_publisher(self.course_run, user)
 
         elif state == CourseRunStateChoices.Published:
-            self.published(site)
+            self.published()
 
         self.save()
 

course_discovery/apps/publisher/tests/test_admin.py

@@ -4,7 +4,6 @@ from django.test import TestCase
 from django.urls import reverse
 from guardian.shortcuts import get_group_perms
 
-from course_discovery.apps.api.tests.mixins import SiteMixin
 from course_discovery.apps.core.tests.factories import UserFactory
 from course_discovery.apps.course_metadata.tests.factories import OrganizationFactory
 from course_discovery.apps.publisher.choices import PublisherUserRole
@@ -19,7 +18,7 @@ USER_PASSWORD = 'password'
 
 
 # pylint: disable=no-member
-class AdminTests(SiteMixin, TestCase):
+class AdminTests(TestCase):
     """ Tests Admin page."""
 
     def setUp(self):
@@ -82,7 +81,7 @@ class AdminTests(SiteMixin, TestCase):
         self.assertEqual(response.status_code, 200)
 
 
-class OrganizationExtensionAdminTests(SiteMixin, TestCase):
+class OrganizationExtensionAdminTests(TestCase):
     """ Tests for OrganizationExtensionAdmin."""
 
     def setUp(self):
@@ -135,7 +134,7 @@ class OrganizationExtensionAdminTests(SiteMixin, TestCase):
 
 
 @ddt.ddt
-class OrganizationUserRoleAdminTests(SiteMixin, TestCase):
+class OrganizationUserRoleAdminTests(TestCase):
     """ Tests for OrganizationUserRoleAdmin."""
 
     def setUp(self):

course_discovery/apps/publisher/tests/test_model.py

@@ -6,7 +6,6 @@ from django.urls import reverse
 from django_fsm import TransitionNotAllowed
 from guardian.shortcuts import assign_perm
 
-from course_discovery.apps.api.tests.mixins import SiteMixin
 from course_discovery.apps.core.tests.factories import UserFactory
 from course_discovery.apps.core.tests.helpers import make_image_file
 from course_discovery.apps.course_metadata.tests.factories import OrganizationFactory, PersonFactory
@@ -511,7 +510,7 @@ class GroupOrganizationTests(TestCase):
 
 
 @ddt.ddt
-class CourseStateTests(SiteMixin, TestCase):
+class CourseStateTests(TestCase):
     """ Tests for the publisher `CourseState` model. """
 
     @classmethod
@@ -549,7 +548,7 @@ class CourseStateTests(SiteMixin, TestCase):
         """
         self.assertNotEqual(self.course_state.name, state)
 
-        self.course_state.change_state(state=state, user=self.user, site=self.site)
+        self.course_state.change_state(state=state, user=self.user)
 
         self.assertEqual(self.course_state.name, state)
 
@@ -562,7 +561,7 @@ class CourseStateTests(SiteMixin, TestCase):
         self.assertEqual(self.course_state.name, CourseStateChoices.Draft)
 
         with self.assertRaises(TransitionNotAllowed):
-            self.course_state.change_state(state=CourseStateChoices.Review, user=self.user, site=self.site)
+            self.course_state.change_state(state=CourseStateChoices.Review, user=self.user)
 
     def test_can_send_for_review(self):
         """
@@ -645,7 +644,7 @@ class CourseStateTests(SiteMixin, TestCase):
 
 
 @ddt.ddt
-class CourseRunStateTests(SiteMixin, TestCase):
+class CourseRunStateTests(TestCase):
     """ Tests for the publisher `CourseRunState` model. """
 
     @classmethod
@@ -704,7 +703,7 @@ class CourseRunStateTests(SiteMixin, TestCase):
         Verify that we can change course-run state according to workflow.
         """
         self.assertNotEqual(self.course_run_state.name, state)
-        self.course_run_state.change_state(state=state, user=self.user, site=self.site)
+        self.course_run_state.change_state(state=state, user=self.user)
         self.assertEqual(self.course_run_state.name, state)
 
     def test_with_invalid_parent_course_state(self):

course_discovery/apps/publisher/tests/test_views.py

@@ -20,13 +20,11 @@ from opaque_keys.edx.keys import CourseKey
 from pytz import timezone
 from testfixtures import LogCapture
 
-from course_discovery.apps.api.tests.mixins import SiteMixin
 from course_discovery.apps.core.models import User
 from course_discovery.apps.core.tests.factories import USER_PASSWORD, UserFactory
 from course_discovery.apps.core.tests.helpers import make_image_file
 from course_discovery.apps.course_metadata.tests import toggle_switch
-from course_discovery.apps.course_metadata.tests.factories import (CourseFactory, OrganizationFactory, PersonFactory,
-                                                                   SubjectFactory)
+from course_discovery.apps.course_metadata.tests.factories import CourseFactory, OrganizationFactory, PersonFactory
 from course_discovery.apps.ietf_language_tags.models import LanguageTag
 from course_discovery.apps.publisher.choices import CourseRunStateChoices, CourseStateChoices, PublisherUserRole
 from course_discovery.apps.publisher.constants import (ADMIN_GROUP_NAME, INTERNAL_USER_GROUP_NAME,
@@ -44,7 +42,7 @@ from course_discovery.apps.publisher_comments.tests.factories import CommentFact
 
 
 @ddt.ddt
-class CreateCourseViewTests(SiteMixin, TestCase):
+class CreateCourseViewTests(TestCase):
     """ Tests for the publisher `CreateCourseView`. """
 
     def setUp(self):
@@ -63,6 +61,7 @@ class CreateCourseViewTests(SiteMixin, TestCase):
         self.course = factories.CourseFactory()
 
         self.course.organizations.add(self.organization_extension.organization)
+        self.site = Site.objects.get(pk=settings.SITE_ID)
         self.client.login(username=self.user.username, password=USER_PASSWORD)
 
         # creating default organizations roles
@@ -270,7 +269,7 @@ class CreateCourseViewTests(SiteMixin, TestCase):
         )
 
 
-class CreateCourseRunViewTests(SiteMixin, TestCase):
+class CreateCourseRunViewTests(TestCase):
     """ Tests for the publisher `UpdateCourseRunView`. """
 
     def setUp(self):
@@ -300,6 +299,7 @@ class CreateCourseRunViewTests(SiteMixin, TestCase):
         current_datetime = datetime.now(timezone('US/Central'))
         self.course_run_dict['start'] = (current_datetime + timedelta(days=1)).strftime('%Y-%m-%d %H:%M:%S')
         self.course_run_dict['end'] = (current_datetime + timedelta(days=3)).strftime('%Y-%m-%d %H:%M:%S')
+        self.site = Site.objects.get(pk=settings.SITE_ID)
         self.client.login(username=self.user.username, password=USER_PASSWORD)
 
     def _pop_valuse_from_dict(self, data_dict, key_list):
@@ -562,7 +562,7 @@ class CreateCourseRunViewTests(SiteMixin, TestCase):
 
 
 @ddt.ddt
-class CourseRunDetailTests(SiteMixin, TestCase):
+class CourseRunDetailTests(TestCase):
     """ Tests for the course-run detail view. """
 
     def setUp(self):
@@ -763,8 +763,9 @@ class CourseRunDetailTests(SiteMixin, TestCase):
         """
         self.client.logout()
         self.client.login(username=self.user.username, password=USER_PASSWORD)
+        site = Site.objects.get(pk=settings.SITE_ID)
 
-        comment = CommentFactory(content_object=self.course_run, user=self.user, site=self.site)
+        comment = CommentFactory(content_object=self.course_run, user=self.user, site=site)
         response = self.client.get(self.page_url)
         self.assertEqual(response.status_code, 200)
         self._assert_credits_seats(response, self.wrapped_course_run.credit_seat)
@@ -778,7 +779,7 @@ class CourseRunDetailTests(SiteMixin, TestCase):
         # test decline comment appearing on detail page also.
         decline_comment = CommentFactory(
             content_object=self.course_run,
-            user=self.user, site=self.site, comment_type=CommentTypeChoices.Decline_Preview
+            user=self.user, site=site, comment_type=CommentTypeChoices.Decline_Preview
         )
         response = self.client.get(self.page_url)
         self.assertContains(response, decline_comment.comment)
@@ -1232,12 +1233,12 @@ class CourseRunDetailTests(SiteMixin, TestCase):
 
 # pylint: disable=attribute-defined-outside-init
 @ddt.ddt
-class DashboardTests(SiteMixin, TestCase):
+class DashboardTests(TestCase):
     """ Tests for the `Dashboard`. """
 
     def setUp(self):
         super(DashboardTests, self).setUp()
-        Site.objects.exclude(id=self.site.id).delete()
+
         self.group_internal = Group.objects.get(name=INTERNAL_USER_GROUP_NAME)
         self.group_project_coordinator = Group.objects.get(name=PROJECT_COORDINATOR_GROUP_NAME)
         self.group_reviewer = Group.objects.get(name=REVIEWER_GROUP_NAME)
@@ -1276,18 +1277,7 @@ class DashboardTests(SiteMixin, TestCase):
 
     def _create_course_assign_role(self, state, user, role):
         """ Create course-run-state, course-user-role and return course-run. """
-        course = factories.CourseFactory(
-            primary_subject=SubjectFactory(partner=self.partner),
-            secondary_subject=SubjectFactory(partner=self.partner),
-            tertiary_subject=SubjectFactory(partner=self.partner)
-        )
-        course_run = factories.CourseRunFactory(course=course)
-        course_run_state = factories.CourseRunStateFactory(
-            name=state,
-            owner_role=role,
-            course_run=course_run
-        )
-
+        course_run_state = factories.CourseRunStateFactory(name=state, owner_role=role)
         factories.CourseUserRoleFactory(course=course_run_state.course_run.course, role=role, user=user)
         return course_run_state.course_run
 
@@ -1494,7 +1484,8 @@ class DashboardTests(SiteMixin, TestCase):
         Verify that site_name is available in context.
         """
         response = self.client.get(self.page_url)
-        self.assertEqual(response.context['site_name'], self.site.name)
+        site = Site.objects.first()
+        self.assertEqual(response.context['site_name'], site.name)
 
     def test_filters(self):
         """
@@ -1512,9 +1503,10 @@ class DashboardTests(SiteMixin, TestCase):
 
         response = self.client.get(self.page_url)
 
+        site = Site.objects.first()
         self._assert_filter_counts(response, 'All', 3)
         self._assert_filter_counts(response, 'With Course Team', 2)
-        self._assert_filter_counts(response, 'With {site_name}'.format(site_name=self.site.name), 1)
+        self._assert_filter_counts(response, 'With {site_name}'.format(site_name=site.name), 1)
 
     def _assert_filter_counts(self, response, expected_label, count):
         """
@@ -1525,7 +1517,7 @@ class DashboardTests(SiteMixin, TestCase):
         self.assertContains(response, expected_count, count=1)
 
 
-class ToggleEmailNotificationTests(SiteMixin, TestCase):
+class ToggleEmailNotificationTests(TestCase):
     """ Tests for `ToggleEmailNotification` view. """
 
     def setUp(self):
@@ -1558,7 +1550,7 @@ class ToggleEmailNotificationTests(SiteMixin, TestCase):
         self.assertEqual(is_email_notification_enabled(user), is_enabled)
 
 
-class CourseListViewTests(SiteMixin, TestCase):
+class CourseListViewTests(TestCase):
     """ Tests for `CourseListView` """
 
     def setUp(self):
@@ -1632,7 +1624,7 @@ class CourseListViewTests(SiteMixin, TestCase):
         self.assertContains(response, 'Edit')
 
 
-class CourseDetailViewTests(SiteMixin, TestCase):
+class CourseDetailViewTests(TestCase):
     """ Tests for the course detail view. """
 
     def setUp(self):
@@ -2064,7 +2056,7 @@ class CourseDetailViewTests(SiteMixin, TestCase):
 
 
 @ddt.ddt
-class CourseEditViewTests(SiteMixin, TestCase):
+class CourseEditViewTests(TestCase):
     """ Tests for the course edit view. """
 
     def setUp(self):
@@ -2482,7 +2474,7 @@ class CourseEditViewTests(SiteMixin, TestCase):
 
 
 @ddt.ddt
-class CourseRunEditViewTests(SiteMixin, TestCase):
+class CourseRunEditViewTests(TestCase):
     """ Tests for the course run edit view. """
 
     def setUp(self):
@@ -2500,6 +2492,7 @@ class CourseRunEditViewTests(SiteMixin, TestCase):
         self.seat = factories.SeatFactory(course_run=self.course_run, type=Seat.VERIFIED, price=2)
 
         self.course.organizations.add(self.organization_extension.organization)
+        self.site = Site.objects.get(pk=settings.SITE_ID)
         self.client.login(username=self.user.username, password=USER_PASSWORD)
         current_datetime = datetime.now(timezone('US/Central'))
         self.start_date_time = (current_datetime + timedelta(days=1)).strftime('%Y-%m-%d %H:%M:%S')
@@ -2782,7 +2775,7 @@ class CourseRunEditViewTests(SiteMixin, TestCase):
 
         body = mail.outbox[0].body.strip()
         self.assertIn(expected_body, body)
-        page_url = 'https://{host}{path}'.format(host=self.site.domain.strip('/'), path=object_path)
+        page_url = 'https://{host}{path}'.format(host=Site.objects.get_current().domain.strip('/'), path=object_path)
         self.assertIn(page_url, body)
 
     def test_studio_instance_with_course_team(self):
@@ -3011,7 +3004,7 @@ class CourseRunEditViewTests(SiteMixin, TestCase):
         self.assertEqual(str(mail.outbox[0].subject), expected_subject)
 
 
-class CourseRevisionViewTests(SiteMixin, TestCase):
+class CourseRevisionViewTests(TestCase):
     """ Tests for CourseReview"""
 
     def setUp(self):
@@ -3063,7 +3056,7 @@ class CourseRevisionViewTests(SiteMixin, TestCase):
         return self.client.get(path=revision_path)
 
 
-class CreateRunFromDashboardViewTests(SiteMixin, TestCase):
+class CreateRunFromDashboardViewTests(TestCase):
     """ Tests for the publisher `CreateRunFromDashboardView`. """
 
     def setUp(self):
@@ -3163,7 +3156,7 @@ class CreateRunFromDashboardViewTests(SiteMixin, TestCase):
         self.assertEqual(str(mail.outbox[0].subject), expected_subject)
 
 
-class CreateAdminImportCourseTest(SiteMixin, TestCase):
+class CreateAdminImportCourseTest(TestCase):
     """ Tests for the publisher `CreateAdminImportCourse`. """
 
     def setUp(self):

course_discovery/apps/publisher/views.py

@@ -394,16 +394,14 @@ class CourseEditView(mixins.PublisherPermissionMixin, UpdateView):
 
         if latest_run and latest_run.course_run_state.name == CourseRunStateChoices.Published:
             # If latest run of this course is published send an email to Publisher and don't change state.
-            send_email_for_published_course_run_editing(latest_run, self.request.site)
+            send_email_for_published_course_run_editing(latest_run)
         else:
             user_role = self.object.course_user_roles.get(user=user)
             # Change course state to draft if marketing not yet reviewed or
             # if marketing person updating the course.
             if not self.object.course_state.marketing_reviewed or user_role.role == PublisherUserRole.MarketingReviewer:
                 if self.object.course_state.name != CourseStateChoices.Draft:
-                    self.object.course_state.change_state(
-                        state=CourseStateChoices.Draft, user=user, site=self.request.site
-                    )
+                    self.object.course_state.change_state(state=CourseStateChoices.Draft, user=user)
 
                 # Change ownership if user role not equal to owner role.
                 if self.object.course_state.owner_role != user_role.role:
@@ -601,7 +599,7 @@ class CreateCourseRunView(mixins.LoginRequiredMixin, CreateView):
                         )
                         messages.success(request, success_msg)
 
-                        emails.send_email_for_course_creation(parent_course, course_run, request.site)
+                        emails.send_email_for_course_creation(parent_course, course_run)
                         return HttpResponseRedirect(reverse(self.success_url, kwargs={'pk': course_run.id}))
                 except Exception as error:  # pylint: disable=broad-except
                     # pylint: disable=no-member
@@ -742,10 +740,10 @@ class CourseRunEditView(mixins.LoginRequiredMixin, mixins.PublisherPermissionMix
 
                     course_run_state = course_run.course_run_state
                     if course_run_state.name not in immutable_states:
-                        course_run_state.change_state(state=CourseStateChoices.Draft, user=user, site=request.site)
+                        course_run_state.change_state(state=CourseStateChoices.Draft, user=user)
 
                     if course_run.lms_course_id and lms_course_id != course_run.lms_course_id:
-                        emails.send_email_for_studio_instance_created(course_run, site=request.site)
+                        emails.send_email_for_studio_instance_created(course_run)
 
                     # pylint: disable=no-member
                     messages.success(request, _('Course run updated successfully.'))
@@ -759,7 +757,7 @@ class CourseRunEditView(mixins.LoginRequiredMixin, mixins.PublisherPermissionMix
                         course_run_state.change_owner_role(user_role)
 
                     if CourseRunStateChoices.Published == course_run_state.name:
-                        send_email_for_published_course_run_editing(course_run, request.site)
+                        send_email_for_published_course_run_editing(course_run)
 
                     return HttpResponseRedirect(reverse(self.success_url, kwargs={'pk': course_run.id}))
             except Exception as e:  # pylint: disable=broad-except

course_discovery/apps/publisher_comments/api/tests/test_views.py

@@ -3,7 +3,6 @@ import json
 from django.test import TestCase
 from rest_framework.reverse import reverse
 
-from course_discovery.apps.api.tests.mixins import SiteMixin
 from course_discovery.apps.core.tests.factories import USER_PASSWORD, UserFactory
 from course_discovery.apps.publisher.tests import JSON_CONTENT_TYPE
 from course_discovery.apps.publisher.tests.factories import CourseRunFactory
@@ -12,7 +11,7 @@ from course_discovery.apps.publisher_comments.models import Comments
 from course_discovery.apps.publisher_comments.tests.factories import CommentFactory
 
 
-class PostCommentTests(SiteMixin, TestCase):
+class PostCommentTests(TestCase):
 
     def generate_data(self, obj):
         """Generate data for the form."""
@@ -40,7 +39,7 @@ class PostCommentTests(SiteMixin, TestCase):
         self.assertEqual(comment.user_email, generated_data['email'])
 
 
-class UpdateCommentTests(SiteMixin, TestCase):
+class UpdateCommentTests(TestCase):
 
     def setUp(self):
         super(UpdateCommentTests, self).setUp()

course_discovery/apps/publisher_comments/tests/test_admin.py

+from django.conf import settings
+from django.contrib.sites.models import Site
 from django.test import TestCase
 from django.urls import reverse
 
-from course_discovery.apps.api.tests.mixins import SiteMixin
 from course_discovery.apps.core.tests.factories import USER_PASSWORD, UserFactory
 from course_discovery.apps.publisher.tests import factories
 from course_discovery.apps.publisher_comments.forms import CommentsAdminForm
 from course_discovery.apps.publisher_comments.tests.factories import CommentFactory
 
 
-class AdminTests(SiteMixin, TestCase):
+class AdminTests(TestCase):
     """ Tests Admin page and customize form."""
     def setUp(self):
         super(AdminTests, self).setUp()
         self.user = UserFactory(is_staff=True, is_superuser=True)
         self.client.login(username=self.user.username, password=USER_PASSWORD)
+        self.site = Site.objects.get(pk=settings.SITE_ID)
         self.course = factories.CourseFactory()
         self.comment = CommentFactory(content_object=self.course, user=self.user, site=self.site)
 

course_discovery/apps/publisher_comments/tests/test_emails.py

 import ddt
 import mock
+from django.conf import settings
+from django.contrib.sites.models import Site
 from django.core import mail
 from django.test import TestCase
 from django.urls import reverse
 from opaque_keys.edx.keys import CourseKey
 from testfixtures import LogCapture
 
-from course_discovery.apps.api.tests.mixins import SiteMixin
 from course_discovery.apps.core.tests.factories import UserFactory
 from course_discovery.apps.course_metadata.tests import toggle_switch
 from course_discovery.apps.publisher.choices import PublisherUserRole
@@ -19,7 +20,7 @@ from course_discovery.apps.publisher_comments.tests.factories import CommentFact
 
 
 @ddt.ddt
-class CommentsEmailTests(SiteMixin, TestCase):
+class CommentsEmailTests(TestCase):
     """ Tests for the e-mail functionality for course, course-run and seats. """
 
     def setUp(self):
@@ -29,6 +30,8 @@ class CommentsEmailTests(SiteMixin, TestCase):
         self.user_2 = UserFactory()
         self.user_3 = UserFactory()
 
+        self.site = Site.objects.get(pk=settings.SITE_ID)
+
         self.organization_extension = factories.OrganizationExtensionFactory()
 
         self.seat = factories.SeatFactory()

course_discovery/settings/base.py

@@ -480,6 +480,8 @@ DISTINCT_COUNTS_QUERY_CACHE_WARMING_COUNT = 20
 
 DEFAULT_PARTNER_ID = None
 
+# See: https://docs.djangoproject.com/en/dev/ref/settings/#site-id
+SITE_ID = 1
 COMMENTS_APP = 'course_discovery.apps.publisher_comments'
 
 TAGGIT_CASE_INSENSITIVE = True