diff --git a/Lib/test/test_gettext.py b/Lib/test/test_gettext.py
index 8856cf2db2099c..7a0ec35972365f 100644
--- a/Lib/test/test_gettext.py
+++ b/Lib/test/test_gettext.py
@@ -39,6 +39,9 @@
bmsgd2luayAoaW4gIm15IG90aGVyIGNvbnRleHQiKQB3aW5rIHdpbmsA
'''
+# .mo file with an invalid magic number
+GNU_MO_DATA_BAD_MAGIC_NUMBER = base64.b64encode(b'ABCD')
+
# This data contains an invalid major version number (5)
# An unexpected major version number should be treated as an error when
# parsing a .mo file
@@ -111,6 +114,7 @@
LOCALEDIR = os.path.join('xx', 'LC_MESSAGES')
MOFILE = os.path.join(LOCALEDIR, 'gettext.mo')
+MOFILE_BAD_MAGIC_NUMBER = os.path.join(LOCALEDIR, 'gettext_bad_magic_number.mo')
MOFILE_BAD_MAJOR_VERSION = os.path.join(LOCALEDIR, 'gettext_bad_major_version.mo')
MOFILE_BAD_MINOR_VERSION = os.path.join(LOCALEDIR, 'gettext_bad_minor_version.mo')
UMOFILE = os.path.join(LOCALEDIR, 'ugettext.mo')
@@ -131,6 +135,8 @@ def setUpClass(cls):
os.makedirs(LOCALEDIR)
with open(MOFILE, 'wb') as fp:
fp.write(base64.decodebytes(GNU_MO_DATA))
+ with open(MOFILE_BAD_MAGIC_NUMBER, 'wb') as fp:
+ fp.write(base64.decodebytes(GNU_MO_DATA_BAD_MAGIC_NUMBER))
with open(MOFILE_BAD_MAJOR_VERSION, 'wb') as fp:
fp.write(base64.decodebytes(GNU_MO_DATA_BAD_MAJOR_VERSION))
with open(MOFILE_BAD_MINOR_VERSION, 'wb') as fp:
@@ -249,6 +255,16 @@ def test_bindtextdomain(self):
def test_textdomain(self):
self.assertEqual(gettext.textdomain(), 'gettext')
+ def test_bad_magic_number(self):
+ with open(MOFILE_BAD_MAGIC_NUMBER, 'rb') as fp:
+ with self.assertRaises(OSError) as cm:
+ gettext.GNUTranslations(fp)
+
+ exception = cm.exception
+ self.assertEqual(exception.errno, 0)
+ self.assertEqual(exception.strerror, "Bad magic number")
+ self.assertEqual(exception.filename, MOFILE_BAD_MAGIC_NUMBER)
+
def test_bad_major_version(self):
with open(MOFILE_BAD_MAJOR_VERSION, 'rb') as fp:
with self.assertRaises(OSError) as cm:
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