Added new signal to refund on un-enrollment from LMS dashboard.

LEARNER-1801

common/djangoapps/student/models.py

@@ -60,6 +60,7 @@ from util.query import use_read_replica_if_available
 
 UNENROLL_DONE = Signal(providing_args=["course_enrollment", "skip_refund"])
 ENROLL_STATUS_CHANGE = Signal(providing_args=["event", "user", "course_id", "mode", "cost", "currency"])
+REFUND_ORDER = Signal(providing_args=["course_enrollment"])
 log = logging.getLogger(__name__)
 AUDIT_LOG = logging.getLogger("audit")
 SessionStore = import_module(settings.SESSION_ENGINE).SessionStore  # pylint: disable=invalid-name

common/djangoapps/student/tests/test_views.py

@@ -18,7 +18,7 @@ from pyquery import PyQuery as pq
 
 from student.cookies import get_user_info_cookie_data
 from student.helpers import DISABLE_UNENROLL_CERT_STATES
-from student.models import CourseEnrollment, UserProfile
+from student.models import CourseEnrollment, REFUND_ORDER, UserProfile
 from student.tests.factories import CourseEnrollmentFactory, UserFactory
 from xmodule.modulestore import ModuleStoreEnum
 from xmodule.modulestore.tests.django_utils import SharedModuleStoreTestCase
@@ -91,16 +91,19 @@ class TestStudentDashboardUnenrollments(SharedModuleStoreTestCase):
         self.cert_status = cert_status
 
         with patch('student.views.cert_info', side_effect=self.mock_cert):
-            response = self.client.post(
-                reverse('change_enrollment'),
-                {'enrollment_action': 'unenroll', 'course_id': self.course.id}
-            )
+            with patch('commerce.signals.handle_refund_order') as mock_refund_handler:
+                REFUND_ORDER.connect(mock_refund_handler)
+                response = self.client.post(
+                    reverse('change_enrollment'),
+                    {'enrollment_action': 'unenroll', 'course_id': self.course.id}
+                )
 
-            self.assertEqual(response.status_code, status_code)
-            if status_code == 200:
-                course_enrollment.assert_called_with(self.user, self.course.id)
-            else:
-                course_enrollment.assert_not_called()
+                self.assertEqual(response.status_code, status_code)
+                if status_code == 200:
+                    course_enrollment.assert_called_with(self.user, self.course.id)
+                    self.assertTrue(mock_refund_handler.called)
+                else:
+                    course_enrollment.assert_not_called()
 
     def test_no_cert_status(self):
         """ Assert that the dashboard loads when cert_status is None."""

common/djangoapps/student/views.py

@@ -119,7 +119,8 @@ from student.models import (
     UserStanding,
     anonymous_id_for_user,
     create_comments_service_user,
-    unique_id_for_user
+    unique_id_for_user,
+    REFUND_ORDER
 )
 from student.tasks import send_activation_email
 from third_party_auth import pipeline, provider
@@ -1267,6 +1268,7 @@ def change_enrollment(request, check_access=True):
             return HttpResponseBadRequest(_("Your certificate prevents you from unenrolling from this course"))
 
         CourseEnrollment.unenroll(user, course_id)
+        REFUND_ORDER.send(sender=None, course_enrollment=enrollment)
         return HttpResponse()
     else:
         return HttpResponseBadRequest(_("Enrollment action is invalid"))

lms/djangoapps/commerce/signals.py

@@ -19,21 +19,19 @@ from openedx.core.djangoapps.commerce.utils import ecommerce_api_client, is_comm
 from openedx.core.djangoapps.site_configuration import helpers as configuration_helpers
 from openedx.core.djangoapps.theming import helpers as theming_helpers
 from request_cache.middleware import RequestCache
-from student.models import UNENROLL_DONE
+from student.models import REFUND_ORDER
 
 log = logging.getLogger(__name__)
 
 
 # pylint: disable=unused-argument
-@receiver(UNENROLL_DONE)
-def handle_unenroll_done(sender, course_enrollment=None, skip_refund=False, **kwargs):
+@receiver(REFUND_ORDER)
+def handle_refund_order(sender, course_enrollment=None, **kwargs):
     """
     Signal receiver for unenrollments, used to automatically initiate refunds
     when applicable.
-
-    N.B. this signal is also consumed by lms.djangoapps.shoppingcart.
     """
-    if not is_commerce_service_configured() or skip_refund:
+    if not is_commerce_service_configured():
         return
 
     if course_enrollment and course_enrollment.refundable():

lms/djangoapps/commerce/tests/test_signals.py

@@ -23,7 +23,7 @@ from commerce.signals import create_zendesk_ticket, generate_refund_notification
 from commerce.tests import JSON
 from commerce.tests.mocks import mock_create_refund, mock_process_refund
 from course_modes.models import CourseMode
-from student.models import UNENROLL_DONE
+from student.models import REFUND_ORDER
 from student.tests.factories import CourseEnrollmentFactory, UserFactory
 
 ZENDESK_URL = 'http://zendesk.example.com/'
@@ -35,7 +35,7 @@ ZENDESK_API_KEY = 'abc123'
 @override_settings(ZENDESK_URL=ZENDESK_URL, ZENDESK_USER=ZENDESK_USER, ZENDESK_API_KEY=ZENDESK_API_KEY)
 class TestRefundSignal(TestCase):
     """
-    Exercises logic triggered by the UNENROLL_DONE signal.
+    Exercises logic triggered by the REFUND_ORDER signal.
     """
 
     def setUp(self):
@@ -60,12 +60,12 @@ class TestRefundSignal(TestCase):
         self.config.enable_automatic_refund_approval = True
         self.config.save()
 
-    def send_signal(self, skip_refund=False):
+    def send_signal(self):
         """
-        DRY helper: emit the UNENROLL_DONE signal, as is done in
+        DRY helper: emit the REFUND_ORDER signal, as is done in
         common.djangoapps.student.models after a successful unenrollment.
         """
-        UNENROLL_DONE.send(sender=None, course_enrollment=self.course_enrollment, skip_refund=skip_refund)
+        REFUND_ORDER.send(sender=None, course_enrollment=self.course_enrollment)
 
     @override_settings(
         ECOMMERCE_PUBLIC_URL_ROOT=None,
@@ -83,7 +83,7 @@ class TestRefundSignal(TestCase):
     @mock.patch('commerce.signals.refund_seat')
     def test_receiver(self, mock_refund_seat):
         """
-        Ensure that the UNENROLL_DONE signal triggers correct calls to
+        Ensure that the REFUND_ORDER signal triggers correct calls to
         refund_seat(), when it is appropriate to do so.
 
         TODO (jsa): ideally we would assert that the signal receiver got wired
@@ -94,11 +94,6 @@ class TestRefundSignal(TestCase):
         self.assertTrue(mock_refund_seat.called)
         self.assertEqual(mock_refund_seat.call_args[0], (self.course_enrollment,))
 
-        # if skip_refund is set to True in the signal, we should not try to initiate a refund.
-        mock_refund_seat.reset_mock()
-        self.send_signal(skip_refund=True)
-        self.assertFalse(mock_refund_seat.called)
-
         # if the course_enrollment is not refundable, we should not try to initiate a refund.
         mock_refund_seat.reset_mock()
         self.course_enrollment.refundable = mock.Mock(return_value=False)