Simplify next execution detection

programmation_class.py

@@ -148,19 +148,18 @@ class Programmation:
     def get_next_execution(self, from_date=None, *args, **kwargs):
         from_date = datetime.now() if from_date is None else from_date
 
-        next_iteration = None
         if self.recording_start_date is not None:
-            next_iteration = self.recording_start_date
+            return self.recording_start_date
 
         if self.recurrence_cron is not None:
-            cron = CronSim(self.recurrence_cron, from_date - timedelta(minutes=1))
+            if self.recurrence_start_date is not None and self.recurrence_start_date > from_date:
+                start_date = self.recurrence_start_date
+            else:
+                start_date = from_date
 
-            next_iteration = next(cron)
+            return next(CronSim(self.recurrence_cron, start_date - timedelta(minutes=1)))
 
-            while next_iteration < self.recurrence_start_date:
-                next_iteration = next(cron)
-
-        return next_iteration
+        return None
 
     def set_id(self, id=None):
         self.id = id

unit_tests.py

@@ -602,6 +602,23 @@ class TestProgrammation(unittest.TestCase):
         self.assertIsNotNone(self.pm.delete_programmation_by_id(id=self.last_added_id))
         self.assertEqual(6, len(self.pm.get_all_enabled_programmations()))
 
+        prog = Programmation(programmation=(
+            {
+                'url': "a valid url",
+                'planning': {
+                    'recurrence_cron': '00 00 * * *',
+                    'recurrence_start_date': '2022-12-01 00:00',
+                },
+            }
+        ))
+
+        self.assertEqual(datetime.fromisoformat('2022-12-01 00:00:00'),
+                         prog.get_next_execution(from_date=datetime.fromisoformat('2022-11-30 12:00')))
+        self.assertEqual(datetime.fromisoformat('2022-12-01 00:00:00'),
+                         prog.get_next_execution(from_date=datetime.fromisoformat('2022-12-01 00:00')))
+        self.assertEqual(datetime.fromisoformat('2022-12-02 00:00:00'),
+                         prog.get_next_execution(from_date=datetime.fromisoformat('2022-12-01 00:01')))
+
     def test_end_dates_manipulation(self):
         self.assertEqual(datetime.fromisoformat('2022-12-01 02:00'), Programmation(programmation={
             'url': "a valid url",