Issue 249: add successful_payment_email function and test to check em…

…ail sending

memberships/payments.py

@@ -30,6 +30,7 @@ def handle_stripe_payment(event):
         update_last_payment(event, member)
         add_user_membership_permission(member)
         set_membership_renewal_date(member)
+        successful_payment_email(member)
         return HttpResponse(200)
 
     return HttpResponse(200)
@@ -103,3 +104,8 @@ def failed_payment_email(member):
     subject = "Your payment failed!"
     body = "Something seems to have gone wrong with your payment."
     task_send_email(member.preferred_name, member.email, subject, body)
+
+def successful_payment_email(member):
+    subject = "Your payment successful!"
+    body = "Thank you for your payment."
+    task_send_email(member.preferred_name, member.email, subject, body)

memberships/tests/test_stripe_webhooks.py

@@ -1,5 +1,6 @@
 from django.urls import reverse
 from django.contrib.auth.models import User, Permission
+from django.core import mail
 
 from .utils import StripeTestCase
 from memberships.models import Member, Membership, FailedPayment, Payment
@@ -184,3 +185,21 @@ def test_new_member_is_given_user_permission_on_payment(self):
         user = User.objects.get(id=self.member.user_id)
 
         self.assertEqual(True, user.has_perm("memberships.has_membership"))
+
+    def test_a_successful_payment_send_email(self):
+        response = self.client.post(
+            reverse("stripe_webhook"),
+            {
+                "type": "invoice.paid",
+                "data": {
+                    "object": {
+                        "customer_email": "test@example.com",
+                        "subscription": "sub_12345",
+                    }
+                },
+                "created": 1611620481,
+            },
+            content_type="application/json",
+        )
+
+        self.assertEqual(len(mail.outbox), 1)