Disable unreliable subprocess tests

Author: otethal

graalpython/lib-python/3/test/test_subprocess.py

@@ -2370,6 +2370,7 @@ def test_bytes_program(self):
         exitcode = subprocess.call([program]+args, env=envb)
         self.assertEqual(exitcode, 0)
 
+    @support.impl_detail("[GR-30188] may cause transient failures when executed concurrently", graalvm=False)
     def test_pipe_cloexec(self):
         sleeper = support.findfile("input_reader.py", subdir="subprocessdata")
         fd_status = support.findfile("fd_status.py", subdir="subprocessdata")
@@ -2393,7 +2394,7 @@ def test_pipe_cloexec(self):
                          "found %r" %
                               (unwanted_fds, result_fds & unwanted_fds))
 
-    @unittest.skipIf(sys.platform == 'darwin', '[GR-30189] hangs on graalpython on OS X')
+    @support.impl_detail("[GR-30189] sometimes hangs on graalpython", graalvm=False)
     def test_pipe_cloexec_real_tools(self):
         qcat = support.findfile("qcat.py", subdir="subprocessdata")
         qgrep = support.findfile("qgrep.py", subdir="subprocessdata")
@@ -2435,6 +2436,7 @@ def kill_p2():
         p1.stdout.close()
         p2.stdout.close()
 
+    @support.impl_detail("[GR-30188] may cause transient failures when executed concurrently", graalvm=False)
     def test_close_fds(self):
         fd_status = support.findfile("fd_status.py", subdir="subprocessdata")
 
@@ -2483,6 +2485,7 @@ def test_close_fds(self):
         self.assertIn(1, remaining_fds, "Subprocess failed")
 
 
+    @support.impl_detail("[GR-30188] may cause transient failures when executed concurrently", graalvm=False)
     @unittest.skipIf(sys.platform.startswith("freebsd") and
                      os.stat("/dev").st_dev == os.stat("/dev/fd").st_dev,
                      "Requires fdescfs mounted on /dev/fd on FreeBSD.")
@@ -2566,6 +2569,7 @@ def test_close_fds_when_max_fd_is_lowered(self):
     # descriptor of a pipe closed in the parent process is valid in the
     # child process according to fstat(), but the mode of the file
     # descriptor is invalid, and read or write raise an error.
+    @support.impl_detail("[GR-30188] may cause transient failures when executed concurrently", graalvm=False)
     @support.requires_mac_ver(10, 5)
     def test_pass_fds(self):
         fd_status = support.findfile("fd_status.py", subdir="subprocessdata")
@@ -2600,6 +2604,7 @@ def test_pass_fds(self):
                         close_fds=False, pass_fds=(fd, )))
             self.assertIn('overriding close_fds', str(context.warning))
 
+    @support.impl_detail("[GR-30188] may cause transient failures when executed concurrently", graalvm=False)
     def test_pass_fds_inheritable(self):
         script = support.findfile("fd_status.py", subdir="subprocessdata")
 
@@ -2630,6 +2635,7 @@ def test_pass_fds_inheritable(self):
     # bpo-32270: Ensure that descriptors specified in pass_fds
     # are inherited even if they are used in redirections.
     # Contributed by @izbyshev.
+    @support.impl_detail("[GR-30188] may cause transient failures when executed concurrently", graalvm=False)
     def test_pass_fds_redirected(self):
         """Regression test for https://bugs.python.org/issue32270."""
         fd_status = support.findfile("fd_status.py", subdir="subprocessdata")