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e285b0f257
tox -e py27 -- tests/checker/test_telnet.py takes 30 seconds to complete. That seems excessive to me, but one thing at a time.
114 lines
3.6 KiB
Python
114 lines
3.6 KiB
Python
# -*- coding: iso-8859-1 -*-
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# Copyright (C) 2012 Bastian Kleineidam
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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"""
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Define http test support classes for LinkChecker tests.
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"""
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import sys
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import os
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import time
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import threading
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import telnetlib
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import miniboa
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from . import LinkCheckTest
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TIMEOUT = 5
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class TelnetServerTest (LinkCheckTest):
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"""Start/stop a Telnet server that can be used for testing."""
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def __init__ (self, methodName='runTest'):
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"""Init test class and store default ftp server port."""
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super(TelnetServerTest, self).__init__(methodName=methodName)
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self.host = 'localhost'
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self.port = None
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def get_url(self, user=None, password=None):
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if user is not None:
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if password is not None:
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netloc = u"%s:%s@%s" % (user, password, self.host)
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else:
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netloc = u"%s@%s" % (user, self.host)
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else:
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netloc = self.host
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return u"telnet://%s:%d" % (netloc, self.port)
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def setUp (self):
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"""Start a new Telnet server in a new thread."""
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deadline = time.time() + 10 * TIMEOUT
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self.port = start_server(self.host, 0, deadline=deadline)
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self.assertFalse(self.port is None)
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def tearDown(self):
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"""Send QUIT request to telnet server."""
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try:
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stop_server(self.host, self.port)
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except Exception:
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pass
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def start_server (host, port, deadline):
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# Instantiate Telnet server class and listen to host:port
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clients = []
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def on_connect(client):
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clients.append(client)
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client.send("Telnet test server\n")
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server = miniboa.TelnetServer(port=port, address=host, on_connect=on_connect)
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port = server.server_socket.getsockname()[1]
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t = threading.Thread(None, serve_forever, args=(server, clients, deadline))
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t.start()
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# wait for server to start up
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tries = 0
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while tries < 5:
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tries += 1
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try:
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client = telnetlib.Telnet(timeout=TIMEOUT)
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client.open(host, port)
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client.write("exit\n")
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break
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except:
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time.sleep(0.5)
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return port
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def stop_server (host, port):
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"""Stop a running FTP server."""
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client = telnetlib.Telnet(timeout=TIMEOUT)
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client.open(host, port)
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client.write("stop\n")
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def serve_forever(server, clients, deadline):
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"""Run poll loop for server."""
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while True:
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if time.time() > deadline:
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# It could be that the test is very slow, but that's unlikely.
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raise AssertionError('deadlock detected, aborting')
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server.poll()
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for client in clients:
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if client.active and client.cmd_ready:
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if not handle_cmd(client):
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return
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def handle_cmd(client):
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"""Handle telnet clients."""
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msg = client.get_command().lower()
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if msg == 'exit':
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client.active = False
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elif msg == 'stop':
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return False
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return True
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