/usr/lib/python2.7/dist-packages/ubuntu-sso-client/ubuntu_sso/utils/tests/test_ipc.py is in python-ubuntu-sso-client.tests 13.10-0ubuntu11.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Copyright 2011-2012 Canonical Ltd.
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU General Public License version 3, 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 warranties of
# MERCHANTABILITY, SATISFACTORY QUALITY, 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/>.
#
# In addition, as a special exception, the copyright holders give
# permission to link the code of portions of this program with the
# OpenSSL library under certain conditions as described in each
# individual source file, and distribute linked combinations
# including the two.
# You must obey the GNU General Public License in all respects
# for all of the code used other than OpenSSL. If you modify
# file(s) with this exception, you may extend this exception to your
# version of the file(s), but you are not obligated to do so. If you
# do not wish to do so, delete this exception statement from your
# version. If you delete this exception statement from all source
# files in the program, then also delete it here.
"""Perspective Broker IPC test cases."""
import logging
from collections import namedtuple
from twisted.internet import defer
from twisted.spread.pb import (
DeadReferenceError,
NoSuchMethod,
)
from ubuntuone.devtools.handlers import MementoHandler
from ubuntuone.devtools.testcases import skipIfOS
from ubuntuone.devtools.testcases.txsocketserver import (
TidyUnixServer,
TCPPbServerTestCase,
)
from ubuntu_sso.tests import TestCase
from ubuntu_sso.utils import ipc
TEST_SERVICE = 'foo-service'
TEST_CMDLINE = 'foo.bin'
TEST_SERVER_DESCRIPTION = 'tcp:40404:interface=127.0.0.1'
TEST_CLIENT_DESCRIPTION = 'tcp:host=127.0.0.1:port=40404'
class RandomException(Exception):
"""A random exception."""
class FakeActivationClient(object):
"""A fake ActivationClient."""
def __init__(self, config):
"""Initialize this fake instance."""
self.config = config
def get_active_client_description(self):
"""Return the description where the pb server is running."""
return defer.succeed(self.config.description.client)
class FakeActivationInstance(object):
"""A fake ActivationInstance."""
def __init__(self, config):
"""Initialize the fake instance."""
self.config = config
def get_server_description(self):
"""Return the description where the pb server is running."""
return defer.succeed(self.config.description.server)
class FakeDescriptionFactory(object):
"""A fake description factory."""
def __init__(self, server_description, client_description):
"""Create a new instace."""
self.server = server_description
self.client = client_description
# Invalid name "callRemote", etc.
# pylint: disable=C0102, C0103
class FakeReactor(object):
"""A fake reactor."""
def __init__(self):
"""Initialize this faker."""
self.connection_class = namedtuple("Connection",
"host port factory backlog")
self.connections = []
def connectTCP(self, host, port, factory, timeout=None, bindAddress=None):
"""Store the connected factory."""
connection = self.connection_class(host, port, factory, None)
self.connections.append(connection)
def listenTCP(self, port, factory, interface=None, backlog=None):
"""Store the listenning factory."""
connection = self.connection_class(interface, port, factory, backlog)
self.connections.append(connection)
class FakeTCP4ClientEndpoint(object):
"""A fake tcp4 client."""
def __init__(self, protocol):
"""Create a new instance."""
self.protocol = protocol
def connect(self, *args, **kwargs):
"""Return the client."""
return defer.succeed(self.protocol)
class FakeRemoteClient(object):
"""A fake RemoteClient."""
missing_signal = "missing"
failing_signal = "failing"
dead_remote = False
random_exception = RandomException()
def __init__(self, dead_remote=False):
self.called = False
self.dead_remote = dead_remote
def callRemote(self, signal_name, *a, **kw):
"""Fake a call to a given remote method."""
if self.dead_remote:
raise DeadReferenceError("Calling Stale Broker")
if signal_name == self.missing_signal:
return defer.fail(NoSuchMethod())
if signal_name == self.failing_signal:
return defer.fail(self.random_exception)
self.called = (a, kw)
return defer.succeed(None)
class DummyRemoteService(ipc.RemoteService):
"""Represent a dummy IPC object."""
remote_calls = ['foo', 'bar']
next_result = None
def foo(self):
"""Dummy foo."""
self.Success(self.next_result)
def bar(self, error):
"""Dummy bar."""
self.NotSuccess(error)
@ipc.signal
def Success(self, param):
"""Fire a signal to notify a success."""
@ipc.signal
def NotSuccess(self, error):
"""Fire a signal to notify a not-success."""
@ipc.signal
def NoArgs(self):
"""Get no args passed."""
@ipc.signal
def JustArgs(self, *args):
"""Just get args."""
@ipc.signal
def JustKwargs(self, **kwargs):
"""Just get kwargs."""
@ipc.signal
def BothArgsAndKwargs(self, *args, **kwargs):
"""Both args and kwargs."""
# pylint: enable=C0102, C0103
class DummyService(ipc.BaseService):
"""Represent a dummy root service."""
services = {'dummy': DummyRemoteService}
name = 'Dummy Service'
description = TEST_CLIENT_DESCRIPTION
cmdline = 'yadda yo'
class DummyRemoteClient(ipc.RemoteClient):
"""Represent a dummy remote client."""
call_remote_functions = DummyRemoteService.remote_calls
signal_handlers = ['Success', 'NotSuccess']
class DummyClient(ipc.BaseClient):
"""Represent a dummy base client."""
clients = {'dummy': DummyRemoteClient}
service_name = DummyService.name
service_port = TEST_SERVER_DESCRIPTION
service_cmdline = DummyService.cmdline
class DummyDescription(object):
"""Return the descriptions accordingly."""
def __init__(self, client, server):
"""Create a new instance."""
self.client = client
self.server = server
class BaseIPCTestCase(TCPPbServerTestCase, TestCase):
"""Set the ipc to a random port for this instance."""
timeout = 5
client_class = None # the BaseClient instance
service_class = None # the BaseService instance
remote_client_name = None # the name of the remote client in the client
remote_service_name = None # the name of the remote service in the service
method_mapping = []
signal_mapping = []
@defer.inlineCallbacks
def setUp(self):
# pylint complains about callables
# pylint: disable=E1102
yield super(BaseIPCTestCase, self).setUp()
self.service = None
self.client = None
if self.service_class is not None:
self.service = self.service_class()
self.client = self.client_class()
# patch server connection and client connection to ensure that
# we have clean connections
@defer.inlineCallbacks
def server_listen(server_factory, service_name, activation_cmd,
description, reactor=None):
"""Connect to the local running service."""
yield self.listen_server(self.service)
defer.returnValue(self.listener)
self.patch(ipc, 'server_listen', server_listen)
@defer.inlineCallbacks
def client_connect(client_factory, service_name,
activation_cmdline, description, reactor=None):
"""Connect the local running client."""
yield self.connect_client()
self.client.factory = self.client_factory
defer.returnValue(self.connector)
self.patch(ipc, 'client_connect', client_connect)
# pylint: disable=E1102
yield self.service.start()
yield self.client.connect()
# pylint: enable=E1102
@property
def remote_service(self):
"""Get the service named 'service_name'."""
return getattr(self.service, self.remote_service_name)
@property
def remote_client(self):
"""Get the client named 'remote_client_name'."""
return getattr(self.client, self.remote_client_name)
@defer.inlineCallbacks
def assert_method_called(self, service, method, result, *args, **kwargs):
"""Check that calling 'method(*args, **kwargs)' should query 'service'.
The returned result from calling 'method(*args, **kwargs)' should be
equal to the given parameter 'result'. If 'result' is a deferred, its
result attribute will be used as expected result (ergo the deferred
should be already called).
"""
client = self.remote_client
# hack to handle service methods returning a deferred with result
if isinstance(result, defer.Deferred):
real_result = result.result
else:
real_result = result
self.patch(service, method, lambda *a, **kw: result)
actual = yield client.call_method(method, *args, **kwargs)
self.assertEqual(real_result, actual)
self.assertEqual(service.called, {method: [(args, kwargs)]})
def assert_remote_method(self, method_name, *args, **kwargs):
"""Assert that 'method_name' is a remote method.
The parameters args and kwargs will be passed as such to the method
itself, to exercise it.
"""
self.assertIn(method_name, self.remote_service.remote_calls)
method = getattr(self.remote_service, method_name)
method(*args, **kwargs)
def assert_remote_signal(self, signal_name, *args, **kwargs):
"""Assert that 'signal' is a remote signal.
The parameters args and kwargs will be passed as such to the signal
itself, to exercise it.
"""
self.patch(self.remote_service, 'emit_signal', self._set_called)
signal = getattr(self.remote_service, signal_name)
signal(*args, **kwargs)
expected = (signal_name,) + args
self.assertEqual(self._called, (expected, kwargs))
def test_remote_methods(self):
"""Check every method defined in self.method_mapping.
Assert that every method is a remote method and that it has the
expected signature.
"""
for method, args, kwargs in self.method_mapping:
self.assert_remote_method(method, *args, **kwargs)
def test_remote_signals(self):
"""Check every signal defined in self.signal_mapping.
Assert that every signal is a remote signal and that it has the
expected signature.
"""
for signal_name, args, kwargs in self.signal_mapping:
self.assert_remote_signal(signal_name, *args, **kwargs)
# pylint: enable=E1102
class TCPListenConnectTestCase(BaseIPCTestCase):
"""Test suite for the server_listen and client_connect methods."""
@defer.inlineCallbacks
def setUp(self):
yield super(TCPListenConnectTestCase, self).setUp()
self.fake_reactor = FakeReactor()
@defer.inlineCallbacks
def test_server_listen(self):
"""Test the server_listen function."""
self.patch(ipc, "ActivationInstance", FakeActivationInstance)
description_factory = FakeDescriptionFactory(TEST_SERVER_DESCRIPTION,
TEST_CLIENT_DESCRIPTION)
fake_factory = object()
yield ipc.server_listen(fake_factory, TEST_SERVICE,
TEST_CMDLINE, description_factory,
reactor=self.fake_reactor)
self.assertEqual(len(self.fake_reactor.connections), 1)
conn = self.fake_reactor.connections[0]
self.assertEqual(conn.factory, fake_factory)
self.assertEqual(conn.host, ipc.LOCALHOST)
@defer.inlineCallbacks
def test_client_connect(self):
"""Test the client_connect function."""
called = []
self.patch(ipc, "ActivationClient", FakeActivationClient)
protocol = 'protocol'
client = FakeTCP4ClientEndpoint(protocol)
def client_from_string(reactor, description):
"""Create a client from the given string."""
called.append(('clientFromString', reactor, description))
return client
self.patch(ipc.endpoints, 'clientFromString', client_from_string)
description_factory = FakeDescriptionFactory(TEST_SERVER_DESCRIPTION,
TEST_CLIENT_DESCRIPTION)
fake_factory = object()
returned_protocol = yield ipc.client_connect(fake_factory,
TEST_SERVICE,
TEST_CMDLINE,
description_factory,
reactor=self.fake_reactor)
self.assertIn(('clientFromString', self.fake_reactor,
description_factory.client), called)
self.assertEqual(protocol, returned_protocol)
@skipIfOS('win32', 'Unix domain sockets not supported on windows.')
class DomainListenConnectTestCase(TCPListenConnectTestCase):
"""Test suite for the server_listen and client_connect methods."""
def get_server(self):
"""Return the server to be used to run the tests."""
return TidyUnixServer()
class TCPDummyClientTestCase(BaseIPCTestCase):
"""Test the status client class."""
client_class = DummyClient
service_class = DummyService
remote_client_name = remote_service_name = 'dummy'
method_mapping = [
('foo', (), {}),
('bar', (object(),), {}),
]
signal_mapping = [
('Success', ('test',), {}),
('NotSuccess', ('yadda',), {}),
('NoArgs', (), {}),
('JustArgs', (object(), 'foo'), {}),
('JustKwargs', (), {'foo': 'bar'}),
('BothArgsAndKwargs', ('zaraza', 8), {'foo': -42}),
]
@defer.inlineCallbacks
def test_deprecated_siganl_is_also_sent(self):
"""Old-style, deprecated signals handler are also called."""
d1 = defer.Deferred()
d2 = defer.Deferred()
self.remote_service.next_result = 'yadda'
# old, deprecated way
self.remote_client.connect_to_signal('Success', d1.callback)
self.remote_client.on_success_cb = d2.callback
self.remote_client.foo()
result = yield defer.gatherResults([d1, d2])
self.assertEqual(result, ['yadda', 'yadda'])
@defer.inlineCallbacks
def test_register_to_signals(self):
"""Test the register_to_signals method."""
yield self.remote_client.register_to_signals()
self.addCleanup(self.remote_client.unregister_to_signals)
for signal in self.remote_client.signal_handlers:
self.assertIn(signal, self.service.dummy.clients_per_signal)
@defer.inlineCallbacks
def test_unregister_to_signals(self):
"""Test the register_to_signals method."""
yield self.remote_client.register_to_signals()
yield self.remote_client.unregister_to_signals()
for signal in self.remote_client.signal_handlers:
actual = len(self.remote_service.clients_per_signal[signal])
self.assertEqual(0, actual)
@skipIfOS('win32', 'Unix domain sockets not supported on windows.')
class DomainDummyClientTestCase(TCPDummyClientTestCase):
"""Test the status client class."""
def get_server(self):
"""Return the server to be used to run the tests."""
return TidyUnixServer()
class RemoteMetaTestCase(TestCase):
"""Tests for the RemoteMeta metaclass."""
def test_remote_calls_renamed(self):
"""The remote_calls are renamed."""
test_token = object()
# pylint: disable=W0232
class TestClass(ipc.meta_base(ipc.RemoteMeta)):
"""A class for testing."""
remote_calls = ['test_method']
def test_method(self):
"""Fake call."""
return test_token
# pylint: enable=W0232
tc = TestClass()
self.assertEquals(tc.test_method(), test_token)
# pylint: disable=E1101
self.assertEquals(tc.remote_test_method(), test_token)
# pylint: enable=E1101
class SignalBroadcasterTestCase(TestCase):
"""Test the signal broadcaster code."""
@defer.inlineCallbacks
def setUp(self):
yield super(SignalBroadcasterTestCase, self).setUp()
self.client = FakeRemoteClient()
self.sb = ipc.SignalBroadcaster()
self.memento = MementoHandler()
ipc.logger.addHandler(self.memento)
ipc.logger.setLevel(logging.DEBUG)
self.addCleanup(ipc.logger.removeHandler, self.memento)
def test_remote_register_to_signals(self):
"""Assert that the client was added."""
signals = ["demo_signal1", "demo_signal2"]
self.sb.remote_register_to_signals(self.client, signals)
for signal in signals:
clients = self.sb.clients_per_signal[signal]
self.assertTrue(self.client in clients)
def test_emit_signal(self):
"""Assert that the client method was called."""
first = 1
second = 2
word = 'word'
signal_name = 'on_test'
self.client.callRemote(signal_name, first, second, word=word)
signals = [signal_name]
self.sb.remote_register_to_signals(self.client, signals)
self.sb.emit_signal(signal_name, first, second, foo=word)
self.assertEqual(self.client.called, ((first, second), dict(foo=word)))
def test_emit_signal_dead_reference(self):
"""Test dead reference while emitting a signal."""
sample_signal = "sample_signal"
fake_remote_client = FakeRemoteClient(dead_remote=True)
self.sb.remote_register_to_signals(fake_remote_client, [sample_signal])
self.assertIn(fake_remote_client,
self.sb.clients_per_signal[sample_signal])
self.sb.emit_signal(sample_signal)
self.assertNotIn(fake_remote_client,
self.sb.clients_per_signal[sample_signal])
def test_emit_signal_some_dead_some_not(self):
"""Test a clean reference after a dead one."""
sample_signal = "sample_signal"
fake_dead_remote = FakeRemoteClient(dead_remote=True)
fake_alive_remote = FakeRemoteClient()
self.sb.remote_register_to_signals(fake_dead_remote, [sample_signal])
self.sb.remote_register_to_signals(fake_alive_remote, [sample_signal])
self.sb.emit_signal(sample_signal)
self.assertTrue(fake_alive_remote.called, "The alive must be called.")
def test_emit_signal_ignore_missing_handlers(self):
"""A missing signal handler should just log a debug line."""
fake_remote_client = FakeRemoteClient()
signal = fake_remote_client.missing_signal
signals = [signal]
self.sb.remote_register_to_signals(fake_remote_client, signals)
sb_clients = self.sb.clients_per_signal[signal]
self.assertIn(fake_remote_client, sb_clients)
self.sb.emit_signal(signal)
expected = ipc.SignalBroadcaster.MSG_NO_SIGNAL_HANDLER % (
signal,
fake_remote_client,
)
self.assertTrue(self.memento.check_debug(*expected))
def test_emit_signal_log_other_errors(self):
"""Other errors should be logged as warnings."""
fake_remote_client = FakeRemoteClient()
signal = fake_remote_client.failing_signal
signals = [signal]
self.sb.remote_register_to_signals(fake_remote_client, signals)
sb_clients = self.sb.clients_per_signal[signal]
self.assertIn(fake_remote_client, sb_clients)
self.sb.emit_signal(signal)
expected = ipc.SignalBroadcaster.MSG_COULD_NOT_EMIT_SIGNAL % (
signal,
fake_remote_client,
fake_remote_client.random_exception,
)
self.assertTrue(self.memento.check_warning(*expected))
class FakeRootObject(object):
"""A fake root object."""
def __init__(self, called, remote_obj):
"""Create a new instance."""
self.called = called
self.remote_obj = remote_obj
# pylint: disable=C0103
def callRemote(self, method_name):
"""A fake call remove method."""
self.called.append(method_name)
return defer.succeed(self.remote_obj)
# pylint: enable=C0103
class FakeWorkingRemoteClient(object):
"""A fake remote client."""
def __init__(self, called):
"""Create a new instance."""
self.remote = None
self.called = called
def register_to_signals(self):
"""Register to signals."""
self.called.append('register_to_signals')
return defer.succeed(True)
class ReconnectTestCase(TestCase):
"""Test the reconnection when sso is dead."""
@defer.inlineCallbacks
def setUp(self):
"""Set the different tests."""
yield super(ReconnectTestCase, self).setUp()
self.called = []
self.remote_obj = 'remote'
self.root_obj = FakeRootObject(self.called, self.remote_obj)
def fake_get_root_object():
"""Fake getting the root object."""
self.called.append('getRootObject')
return defer.succeed(self.root_obj)
def fake_client_connect(factory, service_name, cmd, description):
"""Fake the client connect."""
self.called.append('client_connect')
self.patch(factory, 'getRootObject', fake_get_root_object)
return defer.succeed(True)
self.patch(ipc, 'client_connect', fake_client_connect)
@defer.inlineCallbacks
def test_reconnect_method(self):
"""Test the execcution of the reconnect method."""
clients = dict(first=FakeWorkingRemoteClient(self.called),
second=FakeWorkingRemoteClient(self.called))
base_client = ipc.BaseClient()
base_client.clients = clients
for name, client in clients.items():
setattr(base_client, name, client)
yield base_client.reconnect()
# assert that we did call the correct methods
self.assertIn('client_connect', self.called)
self.assertIn('getRootObject', self.called)
for name in clients:
self.assertIn('get_%s' % name, self.called)
self.assertEqual(len(clients),
self.called.count('register_to_signals'))
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