Issue #13415: os.unsetenv() doesn't ignore errors anymore.
diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index 6435b61..4e4956e 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -361,6 +361,15 @@
value = popen.read().strip()
self.assertEqual(value, "World")
+ def test_unset_error(self):
+ if sys.platform == "win32":
+ # an environment variable is limited to 32,767 characters
+ key = 'x' * 50000
+ else:
+ # "=" is not allowed in a variable name
+ key = 'key='
+ self.assertRaises(OSError, os.environ.__delitem__, key)
+
class WalkTests(unittest.TestCase):
"""Tests for os.walk()."""