feat: add tests

commerce_coordinator/apps/commercetools/tests/conftest.py

@@ -284,6 +284,7 @@ def gen_example_customer() -> CTCustomer:
 
 def gen_customer(email: str, un: str):
     return CTCustomer(
+        first_name='John',
         email=email,
         custom=CTCustomFields(
             type=CTTypeReference(

commerce_coordinator/apps/lms/tasks.py

@@ -18,9 +18,9 @@
 User = get_user_model()
 
 
-class CourseEnrollTaskAfterReturn(Task):
+class CourseEnrollTaskAfterReturn(Task): # pylint: disable=abstract-method
     def on_failure(self, exc, task_id, args, kwargs, einfo):
-        error_message = json.loads(exc.response.text).get('message', '')
+        error_message = json.loads(exc.response.text).get('message', '') if exc.response else 'Unknown error'
         edx_lms_user_id = kwargs.get('edx_lms_user_id')
         user_email = kwargs.get('user_email')
         order_number = kwargs.get('order_number')
@@ -76,9 +76,9 @@ def fulfill_order_placed_send_enroll_in_course_task(
     item_quantity,
     line_item_state_id,
     message_id,
-    user_first_name,
-    user_email,
-    course_title
+    user_first_name,    # pylint: disable=unused-argument
+    user_email,         # pylint: disable=unused-argument
+    course_title        # pylint: disable=unused-argument
 ):
     """
     Celery task for order placed fulfillment and enrollment via LMS Enrollment API.

commerce_coordinator/apps/lms/tests/constants.py

@@ -29,7 +29,10 @@
     'line_item_id': '822d77c4-00a6-4fb9-909b-094ef0b8c4b9',
     'item_quantity': 1,
     'line_item_state_id': '8f2e888e-9777-4557-9a7f-c649153770c2',
-    'message_id': '1063f19c-08f3-41a4-a952-a8577374373c'
+    'message_id': '1063f19c-08f3-41a4-a952-a8577374373c',
+    'user_first_name': 'test',
+    'user_email': '[email protected]',
+    'course_title': 'Demonstration Course',
 }
 
 EXAMPLE_FULFILLMENT_REQUEST_PAYLOAD = {

commerce_coordinator/apps/lms/tests/test_signals.py

@@ -35,7 +35,10 @@ class FulfillOrderPlacedSendEnrollInCourseTest(CoordinatorSignalReceiverTestCase
         'line_item_id': 11,
         'item_quantity': 1,
         'line_item_state_id': 12,
-        'message_id': 13
+        'message_id': 13,
+        'user_first_name': 14,
+        'user_email': 15,
+        'course_title': 16,
     }
 
     def test_correct_arguments_passed(self, mock_task):

commerce_coordinator/apps/lms/tests/test_tasks.py

@@ -3,7 +3,7 @@
 """
 
 import logging
-from unittest.mock import patch, sentinel
+from unittest.mock import patch, sentinel, Mock
 
 from django.test import TestCase
 from requests import RequestException
@@ -49,7 +49,10 @@ def unpack_for_uut(values):
             values['line_item_id'],
             values['item_quantity'],
             values['line_item_state_id'],
-            values['message_id']
+            values['message_id'],
+            values['user_first_name'],
+            values['user_email'],
+            values['course_title']
         )
 
     def setUp(self):
@@ -130,3 +133,40 @@ def test_retry_logic(self, mock_ct_get_order, mock_ct_get_state, mock_client):
 
         mock_ct_get_state.assert_called_with(TwoUKeys.FAILURE_FULFILMENT_STATE)
         mock_ct_get_order.assert_called_with(EXAMPLE_FULFILLMENT_SIGNAL_PAYLOAD.get('order_id'))
+
+    @patch('commerce_coordinator.apps.lms.tasks.send_fulfillment_error_email')
+    @patch.object(fulfill_order_placed_send_enroll_in_course_task, 'max_retries', 5)
+    def test_fulfillment_error_email_is_sent_on_failure(self, mock_send_email, mock_client):    # pylint: disable=unused-argument
+        """
+        Test that `on_failure` sends the appropriate failure email.
+        """
+        mock_response = Mock()
+        mock_response.text = '{"message": "course mode is expired or otherwise unavailable for course run"}'
+        exception = RequestException("400 Bad Request")
+        exception.response = mock_response
+
+        exc = exception
+        task_id = "test_task_id"
+        args = []
+        kwargs = EXAMPLE_FULFILLMENT_SIGNAL_PAYLOAD
+        einfo = Mock()
+
+        fulfill_order_placed_send_enroll_in_course_task.push_request(retries=5)
+        fulfill_order_placed_send_enroll_in_course_task.on_failure(
+            exc=exc,
+            task_id=task_id,
+            args=args,
+            kwargs=kwargs,
+            einfo=einfo
+        )
+
+        mock_send_email.assert_called_once_with(
+            EXAMPLE_FULFILLMENT_SIGNAL_PAYLOAD['edx_lms_user_id'],
+            EXAMPLE_FULFILLMENT_SIGNAL_PAYLOAD['user_email'],
+            {
+                'order_number': EXAMPLE_FULFILLMENT_SIGNAL_PAYLOAD['order_number'],
+                'product_type': 'course',
+                'product_name': EXAMPLE_FULFILLMENT_SIGNAL_PAYLOAD['course_title'],
+                'first_name': EXAMPLE_FULFILLMENT_SIGNAL_PAYLOAD['user_first_name'],
+            }
+        )