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# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Tests for L{twisted.words.xish.xmlstream}.
"""
from __future__ import absolute_import, division
from twisted.internet import protocol
from twisted.python import failure
from twisted.trial import unittest
from twisted.words.xish import domish, utility, xmlstream
class XmlStreamTests(unittest.TestCase):
def setUp(self):
self.connectionLostMsg = "no reason"
self.outlist = []
self.xmlstream = xmlstream.XmlStream()
self.xmlstream.transport = self
self.xmlstream.transport.write = self.outlist.append
def loseConnection(self):
"""
Stub loseConnection because we are a transport.
"""
self.xmlstream.connectionLost(failure.Failure(
Exception(self.connectionLostMsg)))
def test_send(self):
"""
Calling L{xmlstream.XmlStream.send} results in the data being written
to the transport.
"""
self.xmlstream.connectionMade()
self.xmlstream.send(b"<root>")
self.assertEqual(self.outlist[0], b"<root>")
def test_receiveRoot(self):
"""
Receiving the starttag of the root element results in stream start.
"""
streamStarted = []
def streamStartEvent(rootelem):
streamStarted.append(None)
self.xmlstream.addObserver(xmlstream.STREAM_START_EVENT,
streamStartEvent)
self.xmlstream.connectionMade()
self.xmlstream.dataReceived("<root>")
self.assertEqual(1, len(streamStarted))
def test_receiveBadXML(self):
"""
Receiving malformed XML results in an L{STREAM_ERROR_EVENT}.
"""
streamError = []
streamEnd = []
def streamErrorEvent(reason):
streamError.append(reason)
def streamEndEvent(_):
streamEnd.append(None)
self.xmlstream.addObserver(xmlstream.STREAM_ERROR_EVENT,
streamErrorEvent)
self.xmlstream.addObserver(xmlstream.STREAM_END_EVENT,
streamEndEvent)
self.xmlstream.connectionMade()
self.xmlstream.dataReceived("<root>")
self.assertEqual(0, len(streamError))
self.assertEqual(0, len(streamEnd))
self.xmlstream.dataReceived("<child><unclosed></child>")
self.assertEqual(1, len(streamError))
self.assertTrue(streamError[0].check(domish.ParserError))
self.assertEqual(1, len(streamEnd))
def test_streamEnd(self):
"""
Ending the stream fires a L{STREAM_END_EVENT}.
"""
streamEnd = []
def streamEndEvent(reason):
streamEnd.append(reason)
self.xmlstream.addObserver(xmlstream.STREAM_END_EVENT,
streamEndEvent)
self.xmlstream.connectionMade()
self.loseConnection()
self.assertEqual(1, len(streamEnd))
self.assertIsInstance(streamEnd[0], failure.Failure)
self.assertEqual(streamEnd[0].getErrorMessage(),
self.connectionLostMsg)
class DummyProtocol(protocol.Protocol, utility.EventDispatcher):
"""
I am a protocol with an event dispatcher without further processing.
This protocol is only used for testing XmlStreamFactoryMixin to make
sure the bootstrap observers are added to the protocol instance.
"""
def __init__(self, *args, **kwargs):
self.args = args
self.kwargs = kwargs
self.observers = []
utility.EventDispatcher.__init__(self)
class BootstrapMixinTests(unittest.TestCase):
"""
Tests for L{xmlstream.BootstrapMixin}.
@ivar factory: Instance of the factory or mixin under test.
"""
def setUp(self):
self.factory = xmlstream.BootstrapMixin()
def test_installBootstraps(self):
"""
Dispatching an event fires registered bootstrap observers.
"""
called = []
def cb(data):
called.append(data)
dispatcher = DummyProtocol()
self.factory.addBootstrap('//event/myevent', cb)
self.factory.installBootstraps(dispatcher)
dispatcher.dispatch(None, '//event/myevent')
self.assertEqual(1, len(called))
def test_addAndRemoveBootstrap(self):
"""
Test addition and removal of a bootstrap event handler.
"""
called = []
def cb(data):
called.append(data)
self.factory.addBootstrap('//event/myevent', cb)
self.factory.removeBootstrap('//event/myevent', cb)
dispatcher = DummyProtocol()
self.factory.installBootstraps(dispatcher)
dispatcher.dispatch(None, '//event/myevent')
self.assertFalse(called)
class GenericXmlStreamFactoryTestsMixin(BootstrapMixinTests):
"""
Generic tests for L{XmlStream} factories.
"""
def setUp(self):
self.factory = xmlstream.XmlStreamFactory()
def test_buildProtocolInstallsBootstraps(self):
"""
The protocol factory installs bootstrap event handlers on the protocol.
"""
called = []
def cb(data):
called.append(data)
self.factory.addBootstrap('//event/myevent', cb)
xs = self.factory.buildProtocol(None)
xs.dispatch(None, '//event/myevent')
self.assertEqual(1, len(called))
def test_buildProtocolStoresFactory(self):
"""
The protocol factory is saved in the protocol.
"""
xs = self.factory.buildProtocol(None)
self.assertIdentical(self.factory, xs.factory)
class XmlStreamFactoryMixinTests(GenericXmlStreamFactoryTestsMixin):
"""
Tests for L{xmlstream.XmlStreamFactoryMixin}.
"""
def setUp(self):
self.factory = xmlstream.XmlStreamFactoryMixin(None, test=None)
self.factory.protocol = DummyProtocol
def test_buildProtocolFactoryArguments(self):
"""
Arguments passed to the factory are passed to protocol on
instantiation.
"""
xs = self.factory.buildProtocol(None)
self.assertEqual((None,), xs.args)
self.assertEqual({'test': None}, xs.kwargs)