test: capture expected email failure logs

backend/bookings/test_services.py

@@ -82,6 +82,7 @@ class BookingServiceTests(TestCase):
 
     @patch("bookings.emailing.send_mail", side_effect=RuntimeError("SMTP down"))
     def test_create_pending_reservation_logs_email_failure_without_crashing(self, mocked_send_mail):
+        with self.assertLogs("bookings.emailing", level="ERROR") as captured_logs:
             result = create_pending_reservation(
                 performance_id=self.performance.id,
                 name="Maria Rossi",
@@ -92,6 +93,12 @@ class BookingServiceTests(TestCase):
         self.assertEqual(result.reservation.status, Reservation.Status.PENDING)
         self.assertEqual(Reservation.objects.count(), 1)
         mocked_send_mail.assert_called_once()
+        self.assertTrue(
+            any(
+                "Failed to send confirmation email for reservation" in log_entry
+                for log_entry in captured_logs.output
+            )
+        )
 
     def test_generate_confirmation_token_returns_raw_token_once(self):
         reservation = self.create_reservation()