From: Serhiy Storchaka Date: Wed, 22 Jul 2026 11:15:41 +0000 (+0300) Subject: gh-154272: Skip forkserver tests when the start method is unavailable (GH-154274) X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=13e3f8aa839d71285f3408241b0518da499eac39;p=thirdparty%2FPython%2Fcpython.git gh-154272: Skip forkserver tests when the start method is unavailable (GH-154274) Co-authored-by: Claude Opus 4.8 (1M context) --- diff --git a/Lib/test/test_concurrent_futures/util.py b/Lib/test/test_concurrent_futures/util.py index 006360c8d941..9dc1d057e75b 100644 --- a/Lib/test/test_concurrent_futures/util.py +++ b/Lib/test/test_concurrent_futures/util.py @@ -139,6 +139,8 @@ class ProcessPoolForkserverMixin(ExecutorMixin): self.skipTest("require unix system") if support.check_sanitizer(thread=True): self.skipTest("TSAN doesn't support threads after fork") + if "forkserver" not in multiprocessing.get_all_start_methods(): + self.skipTest("forkserver start method is not available") return super().get_context() def create_event(self): diff --git a/Lib/test/test_multiprocessing_forkserver/__init__.py b/Lib/test/test_multiprocessing_forkserver/__init__.py index c58375e2861c..600285cbf613 100644 --- a/Lib/test/test_multiprocessing_forkserver/__init__.py +++ b/Lib/test/test_multiprocessing_forkserver/__init__.py @@ -1,3 +1,4 @@ +import multiprocessing import os.path import sys import unittest @@ -12,5 +13,10 @@ if sys.platform in ("win32", "cygwin"): if not support.has_fork_support: raise unittest.SkipTest("requires working os.fork()") +# The forkserver start method requires passing file descriptors over a Unix +# socket, which is not available on every platform (e.g. Solaris/illumos). +if "forkserver" not in multiprocessing.get_all_start_methods(): + raise unittest.SkipTest("forkserver start method is not available") + def load_tests(*args): return support.load_package_tests(os.path.dirname(__file__), *args)