Added tests that conversion to our own timezone is always an identity,
and that conversion to "timezone" None is the same as stripping the
tzinfo member.
diff --git a/Lib/test/test_datetime.py b/Lib/test/test_datetime.py
index 3f41dda..264d75c 100644
--- a/Lib/test/test_datetime.py
+++ b/Lib/test/test_datetime.py
@@ -2592,6 +2592,13 @@
for during in dston, dston + delta, dstoff - delta:
self.assertEqual(during.dst(), HOUR)
+
+ # Conversion to our own timezone is always an identity.
+ self.assertEqual(during.astimezone(tz), during)
+ # Conversion to None is always the same as stripping tzinfo.
+ self.assertEqual(during.astimezone(None),
+ during.replace(tzinfo=None))
+
asutc = during.astimezone(utc)
there_and_back = asutc.astimezone(tz)
@@ -2649,6 +2656,12 @@
there_and_back = outside.astimezone(utc).astimezone(tz)
self.assertEqual(outside, there_and_back)
+ # Conversion to our own timezone is always an identity.
+ self.assertEqual(outside.astimezone(tz), outside)
+ # Conversion to None is always the same as stripping tzinfo.
+ self.assertEqual(outside.astimezone(None),
+ outside.replace(tzinfo=None))
+
def test_easy(self):
# Despite the name of this test, the endcases are excruciating.
self.convert_between_tz_and_utc(Eastern, utc_real)