gh-103092: Isolate socket module (#103094)

Author: erlend-aasland

Lib/test/test_socket.py

@@ -8,6 +8,7 @@
 import array
 import contextlib
 import errno
+import gc
 import io
 import itertools
 import math
@@ -836,6 +837,12 @@ def requireSocket(*args):
 
 class GeneralModuleTests(unittest.TestCase):
 
+    @unittest.skipUnless(_socket is not None, 'need _socket module')
+    def test_socket_type(self):
+        self.assertTrue(gc.is_tracked(_socket.socket))
+        with self.assertRaisesRegex(TypeError, "immutable"):
+            _socket.socket.foo = 1
+
     def test_SocketType_is_socketobject(self):
         import _socket
         self.assertTrue(socket.SocketType is _socket.socket)

Misc/NEWS.d/next/Library/2023-04-03-23-43-12.gh-issue-103092.3xqk4y.rst

@@ -0,0 +1 @@
+Isolate :mod:`!_socket` (apply :pep:`687`). Patch by Erlend E. Aasland.