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# Copyright 2011 Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
'''System test classes.
This is like ``unittest``, except for testing running systems.
An extension is that the test runner will set up a member, ``settings``,
which acts as a dictionary, and has run-time settings for things like
the hostname of the target system.
'''
import logging
import re
import subprocess
import unittest
class TestCase(unittest.TestCase):
'''Base class for system tests.
This extends ``unittest.TestCase`` with some things that are
relevant to system tests.
'''
def runcmd(self, argv, stdin='', *args, **kwargs):
logging.debug('systest.TestCase.runcmd: argv=%s' % repr(argv))
p = subprocess.Popen(argv,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
out, err = p.communicate(stdin)
return p.returncode, out, err
def hostcmd(self, argv, *args, **kwargs):
'''Run external command on test host.'''
returncode, out, err = self.runcmd(argv, *args, **kwargs)
if returncode:
msg = 'host command failed: %s\n%s' % (' '.join(argv), err)
raise AssertionError(msg)
return out
def targetcmd(self, argv, *args, **kwargs):
'''Run command on test target.'''
full_argv = (['ssh', '-l', self.settings['user'],
'-p', str(self.settings['ssh-port']),
self.settings['target']] +
argv)
returncode, out, err = self.runcmd(full_argv, *args, **kwargs)
if returncode:
msg = 'target command failed: %s\n%s' % (' '.join(argv), err)
raise AssertionError(msg)
return out
def assertMatches(self, pat, text, msg=None):
self.assert_(re.match(pat, text),
msg=('pattern %s does not match %s' % (pat, text)) or msg)
def find_open_ports(self):
'''Return list of open ports.
Each port is shown as '22/tcp', where '22' is the port number,
and 'tcp' indicates the TCP protocol. See nmap documentation for
more info on ports.
'''
out = self.hostcmd(['nmap', self.settings['target']])
return [line.split()[0]
for line in out.splitlines()
if ' open ' in line]
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