notifications: fix overdue with no lib open days

* Closes: rero#2303.

Co-Authored-by: Johnny Mariéthoz <Johnny.Mariethoz@rero.ch>

rero_ils/modules/circ_policies/api.py

@@ -19,6 +19,7 @@
 """API for manipulating Circulation policies."""
 from __future__ import absolute_import, print_function
 
+import math
 import sys
 from functools import partial
 
@@ -353,7 +354,8 @@ def get_reminders(self, reminder_type=DUE_SOON_REMINDER_TYPE, limit=None):
         :param limit: the number of day limit. All reminders defined after
                       these limit will not be returned
         """
-        limit = limit or sys.maxsize
+        if limit is None:
+            limit = math.inf
         for reminder in self.get('reminders', []):
             if reminder.get('type') == reminder_type \
                and reminder.get('days_delay') <= limit:

tests/api/test_tasks.py

@@ -92,7 +92,23 @@ def test_notifications_task(
     notif_date = ciso8601.parse_datetime(notif.get('creation_date'))
     assert notif_date.date() == datetime.today().date()
 
-    # test overdue notification
+    ### test overdue notification
+
+    end_date = datetime(year=2021, month=1, day=22, tzinfo=timezone.utc)
+    loan['end_date'] = end_date.isoformat()
+    loan.update(loan, dbcommit=True, reindex=True)
+    process_date = datetime(year=2021, month=1, day=23, tzinfo=timezone.utc)
+    overdue_loans = list(get_overdue_loans(tstamp=process_date))
+    assert overdue_loans[0].get('pid') == loan_pid
+    create_notifications(types=[
+        NotificationType.OVERDUE
+    ], tstamp=process_date)
+    flush_index(NotificationsSearch.Meta.index)
+    flush_index(LoansSearch.Meta.index)
+    assert not loan.is_notified(NotificationType.OVERDUE, 1)
+    assert number_of_reminders_sent(
+        loan, notification_type=NotificationType.OVERDUE) == 0
+
     #   For this test, we will update the loan to simulate an overdue of 12
     #   days. With this delay, regarding the cipo configuration, only the first
     #   overdue reminder should be sent.