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-rw-r--r--Lib/imaplib.py16
-rw-r--r--Lib/test/support.py31
-rw-r--r--Lib/test/test_imaplib.py9
3 files changed, 41 insertions, 15 deletions
diff --git a/Lib/imaplib.py b/Lib/imaplib.py
index 1fcba21..c0334d8 100644
--- a/Lib/imaplib.py
+++ b/Lib/imaplib.py
@@ -22,7 +22,7 @@ Public functions: Internaldate2tuple
__version__ = "2.58"
-import binascii, errno, random, re, socket, subprocess, sys, time
+import binascii, errno, random, re, socket, subprocess, sys, time, calendar
try:
import ssl
@@ -1340,19 +1340,9 @@ def Internaldate2tuple(resp):
zone = -zone
tt = (year, mon, day, hour, min, sec, -1, -1, -1)
+ utc = calendar.timegm(tt) - zone
- utc = time.mktime(tt)
-
- # Following is necessary because the time module has no 'mkgmtime'.
- # 'mktime' assumes arg in local timezone, so adds timezone/altzone.
-
- lt = time.localtime(utc)
- if time.daylight and lt[-1]:
- zone = zone + time.altzone
- else:
- zone = zone + time.timezone
-
- return time.localtime(utc - zone)
+ return time.localtime(utc)
diff --git a/Lib/test/support.py b/Lib/test/support.py
index 01cd203..0526b14 100644
--- a/Lib/test/support.py
+++ b/Lib/test/support.py
@@ -53,7 +53,7 @@ __all__ = [
"reap_children", "cpython_only", "check_impl_detail", "get_attribute",
"swap_item", "swap_attr", "requires_IEEE_754",
"TestHandler", "Matcher", "can_symlink", "skip_unless_symlink",
- "import_fresh_module", "failfast",
+ "import_fresh_module", "failfast", "run_with_tz"
]
class Error(Exception):
@@ -1021,6 +1021,35 @@ def run_with_locale(catstr, *locales):
return decorator
#=======================================================================
+# Decorator for running a function in a specific timezone, correctly
+# resetting it afterwards.
+
+def run_with_tz(tz):
+ def decorator(func):
+ def inner(*args, **kwds):
+ if 'TZ' in os.environ:
+ orig_tz = os.environ['TZ']
+ else:
+ orig_tz = None
+ os.environ['TZ'] = tz
+ time.tzset()
+
+ # now run the function, resetting the tz on exceptions
+ try:
+ return func(*args, **kwds)
+ finally:
+ if orig_tz == None:
+ del os.environ['TZ']
+ else:
+ os.environ['TZ'] = orig_tz
+ time.tzset()
+
+ inner.__name__ = func.__name__
+ inner.__doc__ = func.__doc__
+ return inner
+ return decorator
+
+#=======================================================================
# Big-memory-test support. Separate from 'resources' because memory use
# should be configurable.
diff --git a/Lib/test/test_imaplib.py b/Lib/test/test_imaplib.py
index 8034000..7e9329c 100644
--- a/Lib/test/test_imaplib.py
+++ b/Lib/test/test_imaplib.py
@@ -11,7 +11,7 @@ import socketserver
import time
import calendar
-from test.support import reap_threads, verbose, transient_internet
+from test.support import reap_threads, verbose, transient_internet, run_with_tz
import unittest
try:
@@ -36,6 +36,13 @@ class TestImaplib(unittest.TestCase):
b'25 (INTERNALDATE "31-Dec-1999 12:30:00 -1130")')
self.assertEqual(time.mktime(tt), t0)
+ @run_with_tz('MST+07MDT,M4.1.0,M10.5.0')
+ def test_Internaldate2tuple_issue10941(self):
+ self.assertNotEqual(imaplib.Internaldate2tuple(
+ b'25 (INTERNALDATE "02-Apr-2000 02:30:00 +0000")'),
+ imaplib.Internaldate2tuple(
+ b'25 (INTERNALDATE "02-Apr-2000 03:30:00 +0000")'))
+
def test_that_Time2Internaldate_returns_a_result(self):
# We can check only that it successfully produces a result,
# not the correctness of the result itself, since the result