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-rw-r--r--Lib/test/test_datetime.py6
1 files changed, 6 insertions, 0 deletions
diff --git a/Lib/test/test_datetime.py b/Lib/test/test_datetime.py
index 9f8ea1d..9fd38f1 100644
--- a/Lib/test/test_datetime.py
+++ b/Lib/test/test_datetime.py
@@ -1561,6 +1561,12 @@ class TestTimeTZ(TestTime):
self.assertEqual(t1.strftime("%H:%M %%Z='%Z' %%z='%z'"),
"23:59 %Z='%z %Z %%z%%Z' %z='-2359'")
+ # Check that an invalid tzname result raises an exception.
+ class Badtzname(tzinfo):
+ def tzname(self, dt): return 42
+ t = timetz(2, 3, 4, tzinfo=Badtzname())
+ self.assertEqual(t.strftime("%H:%M:%S"), "02:03:04")
+ self.assertRaises(TypeError, t.strftime, "%Z")
def test_hash_edge_cases(self):
# Offsets that overflow a basic time.