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-rw-r--r--Lib/test/test_os.py4
1 files changed, 4 insertions, 0 deletions
diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index ef5f805..79e66fb 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -447,6 +447,10 @@ class EnvironTests(mapping_tests.BasicTestMappingProtocol):
value_str = value.decode(sys.getfilesystemencoding(), 'surrogateescape')
self.assertEqual(os.environ['bytes'], value_str)
+ # On FreeBSD < 7 and OS X < 10.6, unsetenv() doesn't return a value (issue
+ # #13415).
+ @support.requires_freebsd_version(7)
+ @support.requires_mac_ver(10, 6)
def test_unset_error(self):
if sys.platform == "win32":
# an environment variable is limited to 32,767 characters