gh-119461: Restore the testSocket VSOCK skipUnless removed by PR #119465 (#129561)

gpshead · web-flow · commit e1006ce1ded1 · 2025-02-01T20:46:56.000-08:00
Restore the skipUnless removed by #119465. This test can only pass on virtual machines, not actual machines. actual machines see: ``` self.cli.connect((cid, VSOCKPORT)) ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^ OSError: [Errno 19] No such device ``` Reproduced on (Linux) Ubuntu 24.04.1 running 6.8.0-52-generic.
diff --git a/Lib/test/test_socket.py b/Lib/test/test_socket.py
@@ -520,6 +520,8 @@ def clientTearDown(self):
 @unittest.skipIf(WSL, 'VSOCK does not work on Microsoft WSL')
 @unittest.skipUnless(HAVE_SOCKET_VSOCK,
           'VSOCK sockets required for this test.')
+@unittest.skipUnless(get_cid() != 2,  # VMADDR_CID_HOST
+                     "This test can only be run on a virtual guest.")
 class ThreadedVSOCKSocketStreamTest(unittest.TestCase, ThreadableTest):
 
     def __init__(self, methodName='runTest'):
