[stream-refactor] import incomplete create_child_test

pull/607/head
David Wilson 5 years ago
parent 9c38093aa7
commit cfe337b3c0

@ -0,0 +1,278 @@
import fcntl
import os
import stat
import sys
import time
import tempfile
import mock
import unittest2
import mitogen.parent
import testlib
def run_fd_check(func, fd, mode, on_start=None):
tf = tempfile.NamedTemporaryFile()
args = [
sys.executable,
testlib.data_path('fd_check.py'),
tf.name,
str(fd),
mode,
]
proc = func(args=args)
os = None
if on_start:
os = on_start(proc)
proc.proc.wait()
try:
return proc, eval(tf.read()), os
finally:
tf.close()
def close_proc(proc):
proc.receive_side.close()
proc.transmit_side.close()
if proc.diag_receive_side:
proc.diag_receive_side.close()
if proc.diag_transmit_side:
proc.diag_transmit_side.close()
def wait_read(side, n):
poller = mitogen.core.Poller()
try:
poller.start_receive(side.fd)
for _ in poller.poll():
return side.read(n)
assert False
finally:
poller.close()
class StdinSockMixin(object):
def test_stdin(self):
proc, info, _ = run_fd_check(self.func, 0, 'read',
lambda proc: proc.transmit_side.write('TEST'))
st = os.fstat(proc.transmit_side.fd)
self.assertTrue(stat.S_ISSOCK(st.st_mode))
self.assertEquals(st.st_dev, info['st_dev'])
self.assertEquals(st.st_mode, info['st_mode'])
flags = fcntl.fcntl(proc.transmit_side.fd, fcntl.F_GETFL)
self.assertTrue(flags & os.O_RDWR)
self.assertTrue(info['buf'], 'TEST')
self.assertTrue(info['flags'] & os.O_RDWR)
class StdoutSockMixin(object):
def test_stdout(self):
proc, info, buf = run_fd_check(self.func, 1, 'write',
lambda proc: wait_read(proc.receive_side, 4))
st = os.fstat(proc.transmit_side.fd)
self.assertTrue(stat.S_ISSOCK(st.st_mode))
self.assertEquals(st.st_dev, info['st_dev'])
self.assertEquals(st.st_mode, info['st_mode'])
flags = fcntl.fcntl(proc.receive_side.fd, fcntl.F_GETFL)
self.assertTrue(flags & os.O_RDWR)
self.assertTrue(buf, 'TEST')
self.assertTrue(info['flags'] & os.O_RDWR)
class CreateChildTest(StdinSockMixin, StdoutSockMixin, testlib.TestCase):
func = staticmethod(mitogen.parent.create_child)
def test_stderr(self):
proc, info, _ = run_fd_check(self.func, 2, 'write')
st = os.fstat(sys.stderr.fileno())
self.assertEquals(st.st_dev, info['st_dev'])
self.assertEquals(st.st_mode, info['st_mode'])
self.assertEquals(st.st_ino, info['st_ino'])
class MergedCreateChildTest(StdinSockMixin, StdoutSockMixin,
testlib.TestCase):
func = staticmethod(mitogen.parent.merged_create_child)
def test_stderr(self):
proc, info, buf = run_fd_check(self.func, 2, 'write',
lambda proc: wait_read(proc.receive_side, 4))
st = os.fstat(proc.transmit_side.fd)
self.assertTrue(stat.S_ISSOCK(st.st_mode))
self.assertEquals(st.st_dev, info['st_dev'])
self.assertEquals(st.st_mode, info['st_mode'])
flags = fcntl.fcntl(proc.receive_side.fd, fcntl.F_GETFL)
self.assertTrue(flags & os.O_RDWR)
self.assertTrue(buf, 'TEST')
self.assertTrue(info['flags'] & os.O_RDWR)
class StderrCreateChildTest(StdinSockMixin, StdoutSockMixin,
testlib.TestCase):
func = staticmethod(mitogen.parent.stderr_create_child)
def test_stderr(self):
proc, info, buf = run_fd_check(self.func, 2, 'write',
lambda proc: wait_read(proc.diag_receive_side, 4))
st = os.fstat(proc.diag_receive_side.fd)
self.assertTrue(stat.S_ISFIFO(st.st_mode))
self.assertEquals(st.st_dev, info['st_dev'])
self.assertEquals(st.st_mode, info['st_mode'])
flags = fcntl.fcntl(proc.diag_receive_side.fd, fcntl.F_GETFL)
self.assertFalse(flags & os.O_WRONLY)
self.assertFalse(flags & os.O_RDWR)
self.assertTrue(buf, 'TEST')
self.assertTrue(info['flags'] & os.O_WRONLY)
class TtyCreateChildTest(testlib.TestCase):
func = staticmethod(mitogen.parent.tty_create_child)
def test_stdin(self):
proc, info, _ = run_fd_check(self.func, 0, 'read',
lambda proc: proc.transmit_side.write('TEST'))
st = os.fstat(proc.transmit_side.fd)
self.assertTrue(stat.S_ISCHR(st.st_mode))
self.assertTrue(stat.S_ISCHR(info['st_mode']))
self.assertTrue(isinstance(info['ttyname'],
mitogen.core.UnicodeType))
os.ttyname(proc.transmit_side.fd) # crashes if wrong
flags = fcntl.fcntl(proc.transmit_side.fd, fcntl.F_GETFL)
self.assertTrue(flags & os.O_RDWR)
self.assertTrue(info['flags'] & os.O_RDWR)
self.assertNotEquals(st.st_dev, info['st_dev'])
self.assertTrue(info['buf'], 'TEST')
def test_stdout(self):
proc, info, buf = run_fd_check(self.func, 1, 'write',
lambda proc: wait_read(proc.receive_side, 4))
st = os.fstat(proc.receive_side.fd)
self.assertTrue(stat.S_ISCHR(st.st_mode))
self.assertTrue(stat.S_ISCHR(info['st_mode']))
self.assertTrue(isinstance(info['ttyname'],
mitogen.core.UnicodeType))
os.ttyname(proc.transmit_side.fd) # crashes if wrong
flags = fcntl.fcntl(proc.receive_side.fd, fcntl.F_GETFL)
self.assertTrue(flags & os.O_RDWR)
self.assertTrue(info['flags'] & os.O_RDWR)
self.assertNotEquals(st.st_dev, info['st_dev'])
self.assertTrue(flags & os.O_RDWR)
self.assertTrue(buf, 'TEST')
def test_stderr(self):
proc, info, buf = run_fd_check(self.func, 2, 'write',
lambda proc: wait_read(proc.receive_side, 4))
st = os.fstat(proc.receive_side.fd)
self.assertTrue(stat.S_ISCHR(st.st_mode))
self.assertTrue(stat.S_ISCHR(info['st_mode']))
self.assertTrue(isinstance(info['ttyname'],
mitogen.core.UnicodeType))
os.ttyname(proc.transmit_side.fd) # crashes if wrong
flags = fcntl.fcntl(proc.receive_side.fd, fcntl.F_GETFL)
self.assertTrue(flags & os.O_RDWR)
self.assertTrue(info['flags'] & os.O_RDWR)
self.assertNotEquals(st.st_dev, info['st_dev'])
self.assertTrue(flags & os.O_RDWR)
self.assertTrue(buf, 'TEST')
def test_dev_tty_open_succeeds(self):
# In the early days of UNIX, a process that lacked a controlling TTY
# would acquire one simply by opening an existing TTY. Linux and OS X
# continue to follow this behaviour, however at least FreeBSD moved to
# requiring an explicit ioctl(). Linux supports it, but we don't yet
# use it there and anyway the behaviour will never change, so no point
# in fixing things that aren't broken. Below we test that
# getpass-loving apps like sudo and ssh get our slave PTY when they
# attempt to open /dev/tty, which is what they both do on attempting to
# read a password.
tf = tempfile.NamedTemporaryFile()
try:
proc = self.func([
'bash', '-c', 'exec 2>%s; echo hi > /dev/tty' % (tf.name,)
])
deadline = time.time() + 5.0
mitogen.core.set_block(proc.receive_side.fd)
self.assertEquals(mitogen.core.b('hi\n'), proc.receive_side.read())
waited_pid, status = os.waitpid(proc.pid, 0)
self.assertEquals(proc.pid, waited_pid)
self.assertEquals(0, status)
self.assertEquals(mitogen.core.b(''), tf.read())
proc.receive_side.close()
finally:
tf.close()
class StderrDiagTtyMixin(object):
def test_stderr(self):
proc, info, buf = run_fd_check(self.func, 2, 'write',
lambda proc: wait_read(proc.diag_receive_side, 4))
st = os.fstat(proc.diag_receive_side.fd)
self.assertTrue(stat.S_ISCHR(st.st_mode))
self.assertTrue(stat.S_ISCHR(info['st_mode']))
self.assertTrue(isinstance(info['ttyname'],
mitogen.core.UnicodeType))
os.ttyname(proc.diag_transmit_side.fd) # crashes if wrong
flags = fcntl.fcntl(proc.diag_receive_side.fd, fcntl.F_GETFL)
self.assertTrue(flags & os.O_RDWR)
self.assertTrue(info['flags'] & os.O_RDWR)
self.assertNotEquals(st.st_dev, info['st_dev'])
self.assertTrue(flags & os.O_RDWR)
self.assertTrue(buf, 'TEST')
class HybridTtyCreateChildTest(StdinSockMixin, StdoutSockMixin,
StderrDiagTtyMixin, testlib.TestCase):
func = staticmethod(mitogen.parent.hybrid_tty_create_child)
class SelinuxHybridTtyCreateChildTest(StderrDiagTtyMixin, testlib.TestCase):
func = staticmethod(mitogen.parent.selinux_hybrid_tty_create_child)
def test_stdin(self):
proc, info, buf = run_fd_check(self.func, 0, 'read',
lambda proc: proc.transmit_side.write('TEST'))
st = os.fstat(proc.transmit_side.fd)
self.assertTrue(stat.S_ISFIFO(st.st_mode))
self.assertEquals(st.st_dev, info['st_dev'])
self.assertEquals(st.st_mode, info['st_mode'])
flags = fcntl.fcntl(proc.transmit_side.fd, fcntl.F_GETFL)
self.assertTrue(flags & os.O_WRONLY)
self.assertTrue(buf, 'TEST')
self.assertFalse(info['flags'] & os.O_WRONLY)
self.assertFalse(info['flags'] & os.O_RDWR)
def test_stdout(self):
proc, info, buf = run_fd_check(self.func, 1, 'write',
lambda proc: wait_read(proc.receive_side, 4))
st = os.fstat(proc.receive_side.fd)
self.assertTrue(stat.S_ISFIFO(st.st_mode))
self.assertEquals(st.st_dev, info['st_dev'])
self.assertEquals(st.st_mode, info['st_mode'])
flags = fcntl.fcntl(proc.receive_side.fd, fcntl.F_GETFL)
self.assertFalse(flags & os.O_WRONLY)
self.assertFalse(flags & os.O_RDWR)
self.assertTrue(info['flags'] & os.O_WRONLY)
self.assertTrue(buf, 'TEST')
if __name__ == '__main__':
unittest2.main()
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