gh-140702: Add test skip for Unix Datagram tests on iOS when on Github Actions

Apple/testbed/__main__.py

@@ -1,5 +1,6 @@
 import argparse
 import json
+import os
 import re
 import shutil
 import subprocess
@@ -78,13 +79,21 @@ def xcode_test(location: Path, platform: str, simulator: str, verbose: bool):
         check=True,
     )
 
+    # Any environment variable prefixed with TEST_RUNNER_ is exposed into the
+    # test runner environment. There are some variables (like those identifying
+    # CI platforms) that can be useful to have access to.
+    test_env = os.environ.copy()
+    if "GITHUB_ACTIONS" in os.environ:
+        test_env["TEST_RUNNER_GITHUB_ACTIONS"] = os.environ["GITHUB_ACTIONS"]
+
     print("Running test project...")
     # Test execution *can't* be run -quiet; verbose mode
     # is how we see the output of the test output.
     process = subprocess.Popen(
         ["xcodebuild", "test-without-building"] + args,
         stdout=subprocess.PIPE,
         stderr=subprocess.STDOUT,
+        env=test_env,
     )
     while line := (process.stdout.readline()).decode(*DECODE_ARGS):
         # Strip the timestamp/process prefix from each log line

Lib/test/support/__init__.py

@@ -68,7 +68,7 @@
     "BrokenIter",
     "in_systemd_nspawn_sync_suppressed",
     "run_no_yield_async_fn", "run_yielding_async_fn", "async_yield",
-    "reset_code",
+    "reset_code", "on_github_actions"
     ]
 
 
@@ -1369,6 +1369,7 @@ def reset_code(f: types.FunctionType) -> types.FunctionType:
     f.__code__ = f.__code__.replace()
     return f
 
+on_github_actions = "GITHUB_ACTIONS" in os.environ
 
 #=======================================================================
 # Check for the presence of docstrings.

Lib/test/test_socketserver.py

@@ -204,11 +204,15 @@ def test_ForkingUnixStreamServer(self):
                             socketserver.StreamRequestHandler,
                             self.stream_examine)
 
+    @unittest.skipIf(test.support.is_apple_mobile and test.support.on_github_actions,
+                     "Test fails regularly on iOS simulator on Github Actions - See #140702")
     def test_UDPServer(self):
         self.run_server(socketserver.UDPServer,
                         socketserver.DatagramRequestHandler,
                         self.dgram_examine)
 
+    @unittest.skipIf(test.support.is_apple_mobile and test.support.on_github_actions,
+                     "Test fails regularly on iOS simulator on Github Actions - See #140702")
     def test_ThreadingUDPServer(self):
         self.run_server(socketserver.ThreadingUDPServer,
                         socketserver.DatagramRequestHandler,