gh-124986: Fix max_handles for NetBSD in test_no_leaking

[furkanonder]

• Issue: ValueError: filedescriptor out of range during test_subprocess on NetBSD #124986

[gpshead]

rather than more specialization for what is probably a kernel config... I think catching ValueError within the loop down where OSError is caught and treating it the same would make more sense.

[furkanonder]

I'm sorry, I don't know exactly what you mean. The error is not being raised in this context.

try:
    tmpfile = os.path.join(tmpdir, os_helper.TESTFN)
    handles.append(os.open(tmpfile, os.O_WRONLY|os.O_CREAT))
except OSError as e:
    if e.errno != errno.EMFILE:
        raise
    break

Is this what you mean?

try:
    p = subprocess.Popen([sys.executable, "-c",
                          "import sys;"
                          "sys.stdout.write(sys.stdin.read())"],
                         stdin=subprocess.PIPE,
                         stdout=subprocess.PIPE,
                         stderr=subprocess.PIPE)
    data = p.communicate(b"lime")[0]
    self.assertEqual(data, b"lime")
except Exception as err:
    self.skipTest("failed to reach the file descriptor limit "
         "(tried %d)" % max_handles)

[serhiy-storchaka]

See more general solution in #132476.