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test_channel.py
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from unittest import skipUnless
from .base_test import SSH2TestCase
from ssh2.exceptions import SocketSendError
from ssh2.session import Session
from ssh2.channel import Channel
class ChannelTestCase(SSH2TestCase):
def test_init(self):
self.assertEqual(self._auth(), 0)
chan = self.session.open_session()
self.assertIsInstance(chan, Channel)
self.assertIsInstance(chan.session, Session)
self.assertEqual(chan.session, self.session)
def test_execute(self):
self.assertEqual(self._auth(), 0)
chan = self.session.open_session()
self.assertTrue(chan is not None)
self.assertTrue(chan.execute(self.cmd) == 0)
size, data = chan.read()
lines = [s.decode('utf-8') for s in data.splitlines()]
self.assertTrue(size > 0)
self.assertTrue(lines, [self.resp])
self.assertEqual(chan.wait_eof(), 0)
self.assertEqual(chan.wait_closed(), 0)
def test_exit_code(self):
self.assertEqual(self._auth(), 0)
chan = self.session.open_session()
chan.execute('exit 2')
chan.wait_eof()
chan.close()
chan.wait_closed()
exit_code = chan.get_exit_status()
self.assertEqual(exit_code, 2)
def test_long_running_execute(self):
self.assertEqual(self._auth(), 0)
chan = self.session.open_session()
chan.execute('sleep 1; exit 3')
self.assertTrue(chan.wait_eof() == 0)
self.assertTrue(chan.close() == 0)
self.assertTrue(chan.wait_closed() == 0)
self.assertEqual(chan.get_exit_status(), 3)
def test_read_stderr(self):
self.assertEqual(self._auth(), 0)
chan = self.session.open_session()
expected = ['stderr output']
chan.execute('echo "stderr output" >&2')
size, data = chan.read_stderr()
self.assertTrue(size > 0)
lines = [s.decode('utf-8') for s in data.splitlines()]
self.assertListEqual(expected, lines)
def test_pty(self):
self.assertEqual(self._auth(), 0)
chan = self.session.open_session()
self.assertTrue(chan.pty() == 0)
_out = u'stderr output'
expected = [_out]
chan.execute(u'echo "%s" >&2' % (_out,))
# stderr output gets redirected to stdout with a PTY
size, data = chan.read()
self.assertTrue(size > 0)
lines = [s.decode('utf-8') for s in data.splitlines()]
self.assertListEqual(expected, lines)
def test_pty_failure(self):
self.assertEqual(self._auth(), 0)
chan = self.session.open_session()
self.sock.close()
self.assertRaises(SocketSendError, chan.pty)
def test_write_stdin(self):
self.assertEqual(self._auth(), 0)
_in = u'writing to stdin'
chan = self.session.open_session()
chan.execute('cat')
chan.write(_in + '\n')
self.assertEqual(chan.send_eof(), 0)
size, data = chan.read()
self.assertTrue(size > 0)
lines = [s.decode('utf-8') for s in data.splitlines()]
self.assertListEqual([_in], lines)
chan.close()
self.assertEqual(chan.wait_eof(), 0)
self.assertTrue(chan.eof())
self.assertEqual(chan.wait_closed(), 0)
def test_write_ex(self):
self.assertEqual(self._auth(), 0)
_in = u'writing to stdin'
chan = self.session.open_session()
chan.execute('cat')
chan.write_ex(0, _in + '\n')
self.assertEqual(chan.send_eof(), 0)
size, data = chan.read()
self.assertTrue(size > 0)
lines = [s.decode('utf-8') for s in data.splitlines()]
self.assertListEqual([_in], lines)
def test_write_stderr(self):
self.assertEqual(self._auth(), 0)
chan = self.session.open_session()
chan.execute('echo something')
_in = u'stderr'
self.assertTrue(chan.write_stderr(_in + '\n')[0] > 0)
self.assertEqual(chan.close(), 0)
def test_setenv(self):
self.assertEqual(self._auth(), 0)
chan = self.session.open_session()
_var = 'LC_MY_VAR'
_val = 'value'
self.assertEqual(chan.setenv('LC_MY_VAR', _val), 0)
chan.execute('env | grep LC_MY_VAR')
expected = u'%s=%s\n' % (_var, _val)
size, data = chan.read()
self.assertTrue(size > 0)
self.assertEqual(data.decode('utf-8'), expected)
def test_shell(self):
self.assertEqual(self._auth(), 0)
chan = self.session.open_session()
self.assertTrue(chan is not None)
self.assertEqual(chan.shell(), 0)
chan.write('echo me\n')
size, data = chan.read()
lines = [s.decode('utf-8') for s in data.splitlines()]
self.assertTrue(size > 0)
self.assertTrue(lines, [self.resp])
self.assertTrue(chan.close() == 0)
self.assertTrue(chan.wait_eof() == 0)
def test_process_startup(self):
self.assertEqual(self._auth(), 0)
# Shell
chan = self.session.open_session()
self.assertTrue(chan is not None)
self.assertEqual(chan.process_startup('shell'), 0)
chan.write('echo me\n')
size, data = chan.read()
lines = [s.decode('utf-8') for s in data.splitlines()]
self.assertTrue(size > 0)
self.assertTrue(lines, [self.resp])
self.assertTrue(chan.close() == 0)
self.assertTrue(chan.wait_eof() == 0)
# Exec
chan = self.session.open_session()
self.assertTrue(chan is not None)
self.assertEqual(chan.process_startup('exec', self.cmd), 0)
size, data = chan.read()
lines = [s.decode('utf-8') for s in data.splitlines()]
self.assertTrue(size > 0)
self.assertTrue(lines, [self.resp])
self.assertTrue(chan.close() == 0)
self.assertTrue(chan.wait_eof() == 0)
@skipUnless(hasattr(Channel, 'request_auth_agent'),
"No agent forwarding implementation")
def test_agent_forwarding(self):
self.assertEqual(self._auth(), 0)
chan = self.session.open_session()
self.assertEqual(chan.request_auth_agent(), 0)