Merge 85b8e15 into a1f35f6

django_logic/process.py

@@ -45,8 +45,7 @@ def __getattr__(self, item):
         # This exceptions should be handled otherwise it will be very annoying
         elif transitions:
             raise ManyTransitions("There are several transitions available")
-        else:
-            raise TransitionNotAllowed('Transition not allowed')
+        raise AttributeError(f"Process class {self.__class__} has no transition with action name {item}")
 
     def is_valid(self, user=None) -> bool:
         """

tests/test_process.py

@@ -551,6 +551,15 @@ class MyProcess(Process):
         invoice.refresh_from_db()
         self.assertEqual(invoice.status, 'draft')
 
+    def test_get_non_existing_transition(self):
+        class MyProcess(Process):
+            transitions = [Transition('validate', sources=['draft'], target='valid')]
+
+        invoice = Invoice.objects.create(status='draft')
+        process = MyProcess(instance=invoice, field_name='status')
+        with self.assertRaises(AttributeError):
+            process.test()
+
 
 def disable_invoice(invoice: Invoice):
     invoice.is_available = False