add test for make_order_invoice failure branch

Author: PetrDlouhy

plans/tests/tests.py

@@ -40,6 +40,7 @@
 from plans.taxation.eu import EUTaxationPolicy
 from plans.validators import ModelCountValidator
 from plans.views import CreateOrderView
+from plans.admin import OrderAdmin, make_order_invoice
 
 User = get_user_model()
 BillingInfo = AbstractBillingInfo.get_concrete_model()
@@ -1775,6 +1776,40 @@ def test_has_automatic_renewal(self):
             )
 
 
+class AdminActionsTestCase(TestCase):
+    fixtures = ["initial_plan", "test_django-plans_auth", "test_django-plans_plans"]
+
+    def setUp(self):
+        self.user = User.objects.get(username="test1")
+        self.plan_pricing = PlanPricing.objects.first()
+        self.modeladmin = OrderAdmin(Order, admin.site)
+        self.request = RequestFactory().get("/")
+
+    def test_make_order_invoice_not_completed(self):
+        """
+        Test that make_order_invoice admin action doesn't create invoice for not completed order
+        and sends a message to user.
+        """
+        order = Order.objects.create(
+            user=self.user,
+            pricing=self.plan_pricing.pricing,
+            amount=100,
+            plan=self.plan_pricing.plan,
+            completed=None,
+        )
+        queryset = Order.objects.filter(pk=order.pk)
+
+        self.modeladmin.message_user = mock.Mock()
+        make_order_invoice(self.modeladmin, self.request, queryset)
+
+        self.assertEqual(Invoice.objects.filter(order=order).count(), 0)
+        self.modeladmin.message_user.assert_called_with(
+            self.request,
+            f"Order {order.id} is has no completed date, cannot create invoice.",
+            "ERROR",
+        )
+
+
 class TasksTestCase(TestCase):
     def setUp(self):
         self.user = baker.make("User", email="[email protected]", username="foo bar")