Fix #2456 -- Allow shredding instantly after event end (#2462)

src/pretix/base/shredder.py

@@ -34,7 +34,6 @@
 
 import json
 import os
-from datetime import timedelta
 from typing import List, Tuple
 
 from django.db import transaction
@@ -70,11 +69,11 @@ def shred_constraints(event: Event):
             max_fromto=Greatest(Max('date_to'), Max('date_from'))
         )
         max_date = max_date['max_fromto'] or max_date['max_to'] or max_date['max_from']
-        if max_date is not None and max_date > now() - timedelta(days=30):
-            return _('Your event needs to be over for at least 30 days to use this feature.')
+        if max_date is not None and max_date >= now():
+            return _('Your event needs to be over to use this feature.')
     else:
-        if (event.date_to or event.date_from) > now() - timedelta(days=30):
-            return _('Your event needs to be over for at least 30 days to use this feature.')
+        if (event.date_to or event.date_from) >= now():
+            return _('Your event needs to be over to use this feature.')
     if event.live:
         return _('Your ticket shop needs to be offline to use this feature.')
     return None

src/tests/base/test_shredders.py

@@ -380,31 +380,34 @@ def test_shred_constraint_offline(event):
 
 
 @pytest.mark.django_db
-def test_shred_constraint_30_days(event):
+def test_shred_constraint_after_event(event):
     event.live = False
-    event.date_from = now() - timedelta(days=32)
-    event.date_to = now() - timedelta(days=32)
+    now_dt = now()
+    event.date_from = now_dt - timedelta(hours=1)
+    event.date_to = now_dt - timedelta(hours=1)
     assert shred_constraints(event) is None
-    event.date_from = now() - timedelta(days=22)
-    event.date_to = now() - timedelta(days=22)
-    assert shred_constraints(event)
-    event.date_from = now() - timedelta(days=32)
-    event.date_to = now() - timedelta(days=22)
+    event.date_from = now_dt - timedelta(hours=1)
+    event.date_to = now_dt - timedelta(hours=1)
+    assert shred_constraints(event) is None
+    event.date_from = now_dt - timedelta(hours=1)
+    event.date_to = now_dt + timedelta(hours=1)
     assert shred_constraints(event)
 
 
 @pytest.mark.django_db
-def test_shred_constraint_30_days_subevents(event):
+def test_shred_constraint_after_event_subevents(event):
     event.has_subevents = True
     event.live = False
 
+    now_dt = now()
+
     event.subevents.create(
-        date_from=now() - timedelta(days=32),
-        date_to=now() - timedelta(days=32)
+        date_from=now_dt - timedelta(hours=2),
+        date_to=now_dt - timedelta(hours=1)
     )
     assert shred_constraints(event) is None
     event.subevents.create(
-        date_from=now() - timedelta(days=22),
-        date_to=now() - timedelta(days=32)
+        date_from=now_dt - timedelta(hours=1),
+        date_to=now_dt + timedelta(hours=1)
     )
     assert shred_constraints(event)