fix supports_ipv6 test

1 files changed, 6 insertions, 0 deletions

diff --git a/psutil/tests/test_misc.py b/psutil/tests/test_misc.py
index 2cb4dbb1..f0bec81a 100755
--- a/psutil/tests/test_misc.py
+++ b/psutil/tests/test_misc.py
@@ -290,21 +290,27 @@ class TestMisc(unittest.TestCase):
         self.assertEqual(parse_environ_block("a=1\0b=2"), {k("a"): "1"})
 
     def test_supports_ipv6(self):
+        self.addCleanup(supports_ipv6.cache_clear)
+        supports_ipv6.cache_clear()
         if supports_ipv6():
             with mock.patch('psutil._common.socket') as s:
                 s.has_ipv6 = False
                 assert not supports_ipv6()
+                supports_ipv6.cache_clear()
             with mock.patch('psutil._common.socket.socket',
                             side_effect=socket.error) as s:
                 assert not supports_ipv6()
+                supports_ipv6.cache_clear()
                 assert s.called
             with mock.patch('psutil._common.socket.socket',
                             side_effect=socket.gaierror) as s:
                 assert not supports_ipv6()
+                supports_ipv6.cache_clear()
                 assert s.called
             with mock.patch('psutil._common.socket.socket.bind',
                             side_effect=socket.gaierror) as s:
                 assert not supports_ipv6()
+                supports_ipv6.cache_clear()
                 assert s.called
         else:
             with self.assertRaises(Exception):