[IMP] hr_attendance_missing_days: Add additional unittest for edge cases

hr_attendance_missing_days/tests/test_attendance.py

@@ -1,9 +1,22 @@
 # © 2023 initOS GmbH
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
+from datetime import date, datetime, timedelta
+
+import pytz
+
 from odoo.tests import TransactionCase
 
 
+def convert_tz(dt, *, from_tz=None, to_tz=None):
+    return (
+        pytz.timezone(from_tz or "UTC")
+        .localize(dt)
+        .astimezone(pytz.timezone(to_tz or "UTC"))
+        .replace(tzinfo=None)
+    )
+
+
 class TestAttendance(TransactionCase):
     @classmethod
     def setUpClass(cls):
@@ -41,3 +54,41 @@ def test_attendance_creation_with_reason(self):
         attendances_new = attendances_after - attendances_before
         self.assertTrue(attendances_new)
         self.assertFalse(any(attendances_new.mapped("worked_hours")))
+
+    def test_attendance_creation(self):
+        self.env.company.attendance_missing_days_reason = self.reason
+
+        attended = {date(2023, 7, 3 + offset) for offset in range(4)}
+        for tz in ["Europe/Amsterdam", "Pacific/Auckland", "America/New_York"]:
+            employee = self.employee.copy({"tz": tz, "name": f"Employee {tz}"})
+            for offset, times in enumerate(((0, 30), (23, 30), (11, 30), (12, 30))):
+                # Convert the times from the employee TZ zo UTC. 3rd is monday
+                start = convert_tz(
+                    datetime(2023, 7, 3 + offset, *times),
+                    from_tz=tz,
+                    to_tz="UTC",
+                )
+
+                # Generate a 30min attendance blocking the date
+                self.env["hr.attendance"].create(
+                    {
+                        "employee_id": employee.id,
+                        "check_in": start,
+                        "check_out": start + timedelta(minutes=30),
+                    }
+                )
+
+            # Cover a huge time span
+            employee._create_missing_attendances(
+                datetime(2023, 6, 1, 0, 0), datetime(2023, 8, 1, 0, 0)
+            )
+
+            domain = [
+                ("employee_id", "=", employee.id),
+                ("attendance_reason_ids", "=", self.reason.id),
+            ]
+            attendances = self.env["hr.attendance"].search(domain)
+            self.assertTrue(attendances)
+            for attendance in attendances:
+                checkin = convert_tz(attendance.check_in, to_tz=tz)
+                self.assertNotIn(checkin.date(), attended)