bpo-40280: Add requires_fork test helper (GH-30622)

1 files changed, 9 insertions, 9 deletions

diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py
index a8f3c13..f03a642 100644
--- a/Lib/test/test_threading.py
+++ b/Lib/test/test_threading.py
@@ -505,7 +505,7 @@ class ThreadTests(BaseTestCase):
         t = threading.Thread(daemon=True)
         self.assertTrue(t.daemon)
 
-    @unittest.skipUnless(hasattr(os, 'fork'), 'needs os.fork()')
+    @support.requires_fork()
     def test_fork_at_exit(self):
         # bpo-42350: Calling os.fork() after threading._shutdown() must
         # not log an error.
@@ -533,7 +533,7 @@ class ThreadTests(BaseTestCase):
         self.assertEqual(out, b'')
         self.assertEqual(err.rstrip(), b'child process ok')
 
-    @unittest.skipUnless(hasattr(os, 'fork'), 'test needs fork()')
+    @support.requires_fork()
     def test_dummy_thread_after_fork(self):
         # Issue #14308: a dummy thread in the active list doesn't mess up
         # the after-fork mechanism.
@@ -560,7 +560,7 @@ class ThreadTests(BaseTestCase):
         self.assertEqual(out, b'')
         self.assertEqual(err, b'')
 
-    @unittest.skipUnless(hasattr(os, 'fork'), "needs os.fork()")
+    @support.requires_fork()
     def test_is_alive_after_fork(self):
         # Try hard to trigger #18418: is_alive() could sometimes be True on
         # threads that vanished after a fork.
@@ -594,7 +594,7 @@ class ThreadTests(BaseTestCase):
         th.start()
         th.join()
 
-    @unittest.skipUnless(hasattr(os, 'fork'), "test needs os.fork()")
+    @support.requires_fork()
     @unittest.skipUnless(hasattr(os, 'waitpid'), "test needs os.waitpid()")
     def test_main_thread_after_fork(self):
         code = """if 1:
@@ -616,7 +616,7 @@ class ThreadTests(BaseTestCase):
         self.assertEqual(data, "MainThread\nTrue\nTrue\n")
 
     @unittest.skipIf(sys.platform in platforms_to_skip, "due to known OS bug")
-    @unittest.skipUnless(hasattr(os, 'fork'), "test needs os.fork()")
+    @support.requires_fork()
     @unittest.skipUnless(hasattr(os, 'waitpid'), "test needs os.waitpid()")
     def test_main_thread_after_fork_from_nonmain_thread(self):
         code = """if 1:
@@ -993,7 +993,7 @@ class ThreadJoinOnShutdown(BaseTestCase):
             """
         self._run_and_join(script)
 
-    @unittest.skipUnless(hasattr(os, 'fork'), "needs os.fork()")
+    @support.requires_fork()
     @unittest.skipIf(sys.platform in platforms_to_skip, "due to known OS bug")
     def test_2_join_in_forked_process(self):
         # Like the test above, but from a forked interpreter
@@ -1014,7 +1014,7 @@ class ThreadJoinOnShutdown(BaseTestCase):
             """
         self._run_and_join(script)
 
-    @unittest.skipUnless(hasattr(os, 'fork'), "needs os.fork()")
+    @support.requires_fork()
     @unittest.skipIf(sys.platform in platforms_to_skip, "due to known OS bug")
     def test_3_join_in_forked_from_thread(self):
         # Like the test above, but fork() was called from a worker thread
@@ -1085,7 +1085,7 @@ class ThreadJoinOnShutdown(BaseTestCase):
         rc, out, err = assert_python_ok('-c', script)
         self.assertFalse(err)
 
-    @unittest.skipUnless(hasattr(os, 'fork'), "needs os.fork()")
+    @support.requires_fork()
     @unittest.skipIf(sys.platform in platforms_to_skip, "due to known OS bug")
     def test_reinit_tls_after_fork(self):
         # Issue #13817: fork() would deadlock in a multithreaded program with
@@ -1109,7 +1109,7 @@ class ThreadJoinOnShutdown(BaseTestCase):
         for t in threads:
             t.join()
 
-    @unittest.skipUnless(hasattr(os, 'fork'), "needs os.fork()")
+    @support.requires_fork()
     def test_clear_threads_states_after_fork(self):
         # Issue #17094: check that threads states are cleared after fork()