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#!/usr/bin/env python
#
# mtr -- a network diagnostic tool
# Copyright (C) 2016 Matt Kimball
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
'''Test mtr-packet's command parsing.'''
import time
import unittest
import mtrpacket
class TestCommandParse(mtrpacket.MtrPacketTest):
'''Test cases with malformed commands and version checks'''
def test_unknown_command(self):
'Test sending a command unknown to mtr-packet'
self.write_command('13 argle-bargle')
self.assertEqual(self.read_reply(), '13 unknown-command')
def test_malformed_command(self):
'Test sending a malformed command request to mtr-packet'
self.write_command('malformed')
self.assertEqual(self.read_reply(), '0 command-parse-error')
def test_exit_on_stdin_closed(self):
'''Test that the packet process terminates after stdin is closed
Test that, when outstanding requests are complete, the process
terminates following stdin being closed.'''
self.write_command('15 send-probe ip-4 8.8.254.254 timeout 1')
self.packet_process.stdin.close()
time.sleep(2)
self.read_reply()
exit_code = self.packet_process.poll()
self.assertIsNotNone(exit_code)
def test_invalid_argument(self):
'Test sending invalid arguments with probe requests'
bad_commands = [
'22 send-probe',
'23 send-probe ip-4 str-value',
'24 send-probe ip-4 8.8.8.8 timeout str-value',
'25 send-probe ip-4 8.8.8.8 ttl str-value',
]
for cmd in bad_commands:
self.write_command(cmd)
reply = self.parse_reply()
self.assertEqual(reply.command_name, 'invalid-argument')
def test_versioning(self):
'Test version checks and feature support checks'
feature_tests = [
('31 check-support feature ip-4', 'ok'),
('32 check-support feature send-probe', 'ok'),
('33 check-support feature bogus-feature', 'no')
]
self.write_command('30 check-support feature version')
reply = self.parse_reply()
self.assertEqual(reply.token, 30)
self.assertEqual(reply.command_name, 'feature-support')
self.assertIn('support', reply.argument)
for (request, expected) in feature_tests:
self.write_command(request)
reply = self.parse_reply()
self.assertEqual(reply.command_name, 'feature-support')
self.assertIn('support', reply.argument)
self.assertEqual(reply.argument['support'], expected)
def test_command_overflow(self):
'Test overflowing the incoming command buffer'
big_buffer = 'x' * (64 * 1024)
self.write_command(big_buffer)
reply = self.read_reply()
self.assertEqual(reply, '0 command-buffer-overflow')
if __name__ == '__main__':
mtrpacket.check_running_as_root()
unittest.main()
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