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#!/usr/bin/env python
"""Test amqp.connection module"""
# Copyright (C) 2007-2008 Barry Pederson <bp@barryp.org>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
import gc
import unittest
import settings
from amqp import Connection
class TestConnection(unittest.TestCase):
def setUp(self):
self.conn = Connection(**settings.connect_args)
def tearDown(self):
if self.conn:
self.conn.close()
def test_channel(self):
ch = self.conn.channel(1)
self.assertEqual(ch.channel_id, 1)
ch2 = self.conn.channel()
self.assertNotEqual(ch2.channel_id, 1)
ch.close()
ch2.close()
def test_close(self):
"""Make sure we've broken various references when closing
channels and connections, to help with GC."""
#
# Create a channel and make sure it's linked as we'd expect
#
ch = self.conn.channel()
self.assertEqual(1 in self.conn.channels, True)
self.assertEqual(ch.connection, self.conn)
self.assertEqual(ch.is_open, True)
#
# Close the channel and make sure the references are broken
# that we expect.
#
ch.close()
self.assertEqual(ch.connection, None)
self.assertEqual(1 in self.conn.channels, False)
self.assertEqual(ch.callbacks, {})
self.assertEqual(ch.is_open, False)
#
# Close the connection and make sure the references we expect
# are gone.
#
self.conn.close()
self.assertEqual(self.conn.connection, None)
self.assertEqual(self.conn.channels, None)
def test_gc_closed(self):
"""Make sure we've broken various references when closing
channels and connections, to help with GC.
gc.garbage: http://docs.python.org/library/gc.html#gc.garbage
"A list of objects which the collector found to be
unreachable but could not be freed (uncollectable objects)."
"""
unreachable_before = len(gc.garbage)
#
# Create a channel and make sure it's linked as we'd expect
#
self.conn.channel()
self.assertEqual(1 in self.conn.channels, True)
#
# Close the connection and make sure the references we expect
# are gone.
#
self.conn.close()
gc.collect()
gc.collect()
gc.collect()
self.assertEqual(unreachable_before, len(gc.garbage))
def test_gc_forget(self):
"""Make sure the connection gets gc'ed when there is no more
references to it."""
unreachable_before = len(gc.garbage)
ch = self.conn.channel()
self.assertEqual(1 in self.conn.channels, True)
# remove all the references
self.conn = None
del(ch)
gc.collect()
gc.collect()
gc.collect()
self.assertEqual(unreachable_before, len(gc.garbage))
def main():
suite = unittest.TestLoader().loadTestsFromTestCase(TestConnection)
unittest.TextTestRunner(**settings.test_args).run(suite)
if __name__ == '__main__':
main()
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