tests: more extensive testing of date, datetime and time (#745)

Author: leonelcamara

tests/sql.py

@@ -6,6 +6,7 @@
 from __future__ import print_function
 
 import datetime
+import zoneinfo
 import glob
 import json
 import os
@@ -2131,6 +2132,12 @@ def testRun(self):
             Field("start_date", "date"),
             Field("start_time", "time"),
             Field("bookedon", "datetime"),
+            Field("default_date_str", "date", default="2025-11-26"),
+            Field("default_time_str", "time", default="00:01"),
+            Field("default_datetime_str", "datetime", default="2025-11-26 00:01:00"),
+            Field("default_date_fun", "date", default=lambda: datetime.date(2025, 11, 26)),
+            Field("default_time_fun", "time", default=lambda: datetime.time(0, 1)),
+            Field("default_datetime_fun", "datetime", default=lambda: datetime.datetime(2025, 11, 26, 0, 1, 0))
         )
         db.meeting.insert(
             start_date="2025-11-26", start_time="12:30", bookedon="2025-10-20T11:30:00"
@@ -2155,7 +2162,19 @@ def testRun(self):
         db(db.meeting.id == 1).update(bookedon="2025-10-20T11:30")
         db(db.meeting.id == 1).update(bookedon="2025-10-20T11")
         db(db.meeting.id == 1).update(bookedon="2025-10-20")
-        db(db.meeting.id == 1).update(bookedon=datetime.date(2025, 10, 20))
+        # Test with tzinfo
+        db.meeting.insert(
+            start_date=datetime.date(2025, 11, 26),
+            start_time=datetime.time(12, 30),
+            bookedon=datetime.datetime(2025, 10, 20, 11, 30, 0, tzinfo=zoneinfo.ZoneInfo("UTC"))
+        )
+        db(db.meeting.id == 1).update(
+            bookedon=datetime.datetime(2025, 10, 20, 11, 30, 0, tzinfo=zoneinfo.ZoneInfo("UTC"))
+        )
+        # Test with update expressions
+        db(db.meeting.id == 1).update(start_date=db.meeting.start_date)
+        db(db.meeting.id == 1).update(start_time=db.meeting.start_time)
+        db(db.meeting.id == 1).update(bookedon=db.meeting.bookedon)
 
 
 class TestImportExportFields(DALtest):