def testBrokenPipe(self):
p = CPopen(["sleep", "1"])
try:
p.send_signal(signal.SIGPIPE)
finally:
p.kill()
p.wait()
self.assertEqual(p.returncode, -signal.SIGKILL)
def testCloseFDs(self):
with open("/dev/zero") as f:
p = CPopen(["sleep", "1"], close_fds=True)
try:
child_fds = set(os.listdir("/proc/%s/fd" % p.pid))
finally:
p.kill()
p.wait()
self.assertEqual(child_fds, set(["0", "1", "2"]))
def testBrokenPipeSIGPIPERestored(self):
if not cpopen.SUPPORTS_RESTORE_SIGPIPE:
raise SkipTest("subprocess module does not support restore_sigpipe")
p = CPopen(["sleep", "1"], restore_sigpipe=True)
try:
p.send_signal(signal.SIGPIPE)
finally:
p.kill()
p.wait()
self.assertEqual(p.returncode, -signal.SIGPIPE)
def testNoCloseFds(self):
with open("/dev/zero") as f:
p = CPopen(["sleep", "1"], close_fds=False)
try:
child_fds = set(os.listdir("/proc/%s/fd" % p.pid))
finally:
p.kill()
p.wait()
# We cannot know which fds will be inherited in the child since the
# test framework may open some fds.
self.assertTrue(str(f.fileno()) in child_fds)
def testInheritParentFdsCloseFds(self):
# From Python docs: If close_fds is true, all file descriptors except
# 0, 1 and 2 will be closed before the child process is executed.
with open("/dev/zero") as f:
p = CPopen(["sleep", "1"], stdin=None, stdout=None, stderr=None,
close_fds=True)
try:
child_fds = set(os.listdir("/proc/%s/fd" % p.pid))
finally:
p.kill()
p.wait()
self.assertEqual(child_fds, set(["0", "1", "2"]))
def testInheritParentFds(self):
# From Python docs: With the default settings of None, no redirection
# will occur; the child's file handles will be inherited from the
# parent.
with open("/dev/zero") as f:
p = CPopen(["sleep", "1"], stdin=None, stdout=None, stderr=None,
close_fds=False)
try:
child_fds = set(os.listdir("/proc/%s/fd" % p.pid))
finally:
p.kill()
p.wait()
expected_fds = set(["0", "1", "2", str(f.fileno())])
self.assertEqual(child_fds, expected_fds)
