diff --git a/openedx/core/djangoapps/notifications/tests/test_views.py b/openedx/core/djangoapps/notifications/tests/test_views.py
index b094a974aaaa..ae03a6ef29e2 100644
--- a/openedx/core/djangoapps/notifications/tests/test_views.py
+++ b/openedx/core/djangoapps/notifications/tests/test_views.py
@@ -384,6 +384,140 @@ def test_info_is_not_saved_in_json(self):
                 assert 'info' not in type_prefs.keys()
 
 
+@override_waffle_flag(ENABLE_NOTIFICATIONS, active=True)
+@ddt.ddt
+class UserNotificationChannelPreferenceAPITest(ModuleStoreTestCase):
+    """
+    Test for user notification channel preference API.
+    """
+
+    def setUp(self):
+        super().setUp()
+        self.user = UserFactory()
+        self.course = CourseFactory.create(
+            org='testorg',
+            number='testcourse',
+            run='testrun'
+        )
+
+        course_overview = CourseOverviewFactory.create(id=self.course.id, org='AwesomeOrg')
+        self.course_enrollment = CourseEnrollment.objects.create(
+            user=self.user,
+            course=course_overview,
+            is_active=True,
+            mode='audit'
+        )
+        self.client = APIClient()
+        self.path = reverse('notification-channel-preferences', kwargs={'course_key_string': self.course.id})
+
+        enrollment_data = CourseEnrollmentData(
+            user=UserData(
+                pii=UserPersonalData(
+                    username=self.user.username,
+                    email=self.user.email,
+                    name=self.user.profile.name,
+                ),
+                id=self.user.id,
+                is_active=self.user.is_active,
+            ),
+            course=CourseData(
+                course_key=self.course.id,
+                display_name=self.course.display_name,
+            ),
+            mode=self.course_enrollment.mode,
+            is_active=self.course_enrollment.is_active,
+            creation_date=self.course_enrollment.created,
+        )
+        COURSE_ENROLLMENT_CREATED.send_event(
+            enrollment=enrollment_data
+        )
+
+    def _expected_api_response(self, course=None):
+        """
+        Helper method to return expected API response.
+        """
+        if course is None:
+            course = self.course
+        response = {
+            'id': 1,
+            'course_name': 'course-v1:testorg+testcourse+testrun Course',
+            'course_id': 'course-v1:testorg+testcourse+testrun',
+            'notification_preference_config': {
+                'discussion': {
+                    'enabled': True,
+                    'core_notification_types': [
+                        'new_comment_on_response',
+                        'new_comment',
+                        'new_response',
+                        'response_on_followed_post',
+                        'comment_on_followed_post'
+                    ],
+                    'notification_types': {
+                        'core': {
+                            'web': True,
+                            'email': True,
+                            'push': True,
+                            'info': 'Notifications for responses and comments on your posts, and the ones you’re '
+                                    'following, including endorsements to your responses and on your posts.'
+                        },
+                        'new_discussion_post': {'web': False, 'email': False, 'push': False, 'info': ''},
+                        'new_question_post': {'web': False, 'email': False, 'push': False, 'info': ''},
+                    },
+                    'non_editable': {
+                        'core': ['web']
+                    }
+                }
+            }
+        }
+        if not ENABLE_COURSEWIDE_NOTIFICATIONS.is_enabled(course.id):
+            app_prefs = response['notification_preference_config']['discussion']
+            notification_types = app_prefs['notification_types']
+            for notification_type in ['new_discussion_post', 'new_question_post']:
+                notification_types.pop(notification_type)
+        return response
+
+    @ddt.data(
+        ('discussion', 'web', True, status.HTTP_200_OK),
+        ('discussion', 'web', False, status.HTTP_200_OK),
+
+        ('invalid_notification_app', 'web', False, status.HTTP_400_BAD_REQUEST),
+        ('discussion', 'invalid_notification_channel', False, status.HTTP_400_BAD_REQUEST),
+    )
+    @ddt.unpack
+    @mock.patch("eventtracking.tracker.emit")
+    def test_patch_user_notification_preference(
+        self, notification_app, notification_channel, value, expected_status, mock_emit,
+    ):
+        """
+        Test update of user notification channel preference.
+        """
+        self.client.login(username=self.user.username, password=self.TEST_PASSWORD)
+        payload = {
+            'notification_app': notification_app,
+            'value': value,
+        }
+        if notification_channel:
+            payload['notification_channel'] = notification_channel
+
+        response = self.client.patch(self.path, json.dumps(payload), content_type='application/json')
+        self.assertEqual(response.status_code, expected_status)
+
+        if expected_status == status.HTTP_200_OK:
+            expected_data = self._expected_api_response()
+            expected_app_prefs = expected_data['notification_preference_config'][notification_app]
+            for notification_type_name, notification_type_preferences in expected_app_prefs[
+                    'notification_types'].items():
+                non_editable_channels = expected_app_prefs['non_editable'].get(notification_type_name, [])
+                if notification_channel not in non_editable_channels:
+                    expected_app_prefs['notification_types'][notification_type_name][notification_channel] = value
+            self.assertEqual(response.data, expected_data)
+            event_name, event_data = mock_emit.call_args[0]
+            self.assertEqual(event_name, 'edx.notifications.preferences.updated')
+            self.assertEqual(event_data['notification_app'], notification_app)
+            self.assertEqual(event_data['notification_channel'], notification_channel)
+            self.assertEqual(event_data['value'], value)
+
+
 class NotificationListAPIViewTest(APITestCase):
     """
     Tests suit for the NotificationListAPIView.