Python EventDispatcher.dispatch方法代码示例

# 需要导入模块: from twisted.words.xish.utility import EventDispatcher [as 别名]
# 或者: from twisted.words.xish.utility.EventDispatcher import dispatch [as 别名]
    def testOnetimeDispatch(self):
        d = EventDispatcher()
        msg = Element(("ns", "message"))
        cb = CallbackTracker()

        d.addOnetimeObserver("/message", cb.call)
        d.dispatch(msg)
        self.assertEquals(cb.called, 1)
        d.dispatch(msg)
        self.assertEquals(cb.called, 1)

# 需要导入模块: from twisted.words.xish.utility import EventDispatcher [as 别名]
# 或者: from twisted.words.xish.utility.EventDispatcher import dispatch [as 别名]
    def test_cleanUpOnetimeEventObserver(self):
        """
        Test observer clean-up after onetime named events.
        """

        d = EventDispatcher()
        cb = CallbackTracker()

        d.addOnetimeObserver('//event/test', cb.call)
        d.dispatch(None, '//event/test')
        self.assertEqual(1, cb.called)
        self.assertEqual(0, len(d._eventObservers.pop(0)))

# 需要导入模块: from twisted.words.xish.utility import EventDispatcher [as 别名]
# 或者: from twisted.words.xish.utility.EventDispatcher import dispatch [as 别名]
    def testDispatcherResult(self):
        d = EventDispatcher()
        msg = Element(("ns", "message"))
        pres = Element(("ns", "presence"))
        cb = CallbackTracker()

        d.addObserver("/presence", cb.call)
        result = d.dispatch(msg)
        self.assertEquals(False, result)

        result = d.dispatch(pres)
        self.assertEquals(True, result)

# 需要导入模块: from twisted.words.xish.utility import EventDispatcher [as 别名]
# 或者: from twisted.words.xish.utility.EventDispatcher import dispatch [as 别名]
 def testAddObserverInDispatch(self):
     # Test for registration of events during dispatch
     d = EventDispatcher()
     msg = Element(("ns", "message"))
     pres = Element(("ns", "presence"))
     cb = CallbackTracker2(d)
     
     d.addObserver("/message", cb.call2)
     d.dispatch(msg)
     self.assertEquals(cb.called, 0)
     d.dispatch(pres)
     self.assertEquals(cb.called, 1)

# 需要导入模块: from twisted.words.xish.utility import EventDispatcher [as 别名]
# 或者: from twisted.words.xish.utility.EventDispatcher import dispatch [as 别名]
    def test_cleanUpOnetimeXPathObserver(self):
        """
        Test observer clean-up after onetime XPath events.
        """

        d = EventDispatcher()
        cb = CallbackTracker()
        msg = Element((None, "message"))

        d.addOnetimeObserver('/message', cb.call)
        d.dispatch(msg)
        self.assertEqual(1, cb.called)
        self.assertEqual(0, len(d._xpathObservers.pop(0)))

# 需要导入模块: from twisted.words.xish.utility import EventDispatcher [as 别名]
# 或者: from twisted.words.xish.utility.EventDispatcher import dispatch [as 别名]
    def testOrderedXPathDispatch(self):
        d = EventDispatcher()
        cb = OrderedCallbackTracker()
        d.addObserver("/message/body", cb.call2)
        d.addObserver("/message", cb.call3, -1)
        d.addObserver("/message/body", cb.call1, 1)

        msg = Element(("ns", "message"))
        msg.addElement("body")
        d.dispatch(msg)
        self.assertEquals(cb.callList, [cb.call1, cb.call2, cb.call3],
                          "Calls out of order: %s" %
                          repr([c.__name__ for c in cb.callList]))

# 需要导入模块: from twisted.words.xish.utility import EventDispatcher [as 别名]
# 或者: from twisted.words.xish.utility.EventDispatcher import dispatch [as 别名]
    def test_cleanUpRemoveEventObserver(self):
        """
        Test observer clean-up after removeObserver for named events.
        """

        d = EventDispatcher()
        cb = CallbackTracker()

        d.addObserver("//event/test", cb.call)
        d.dispatch(None, "//event/test")
        self.assertEqual(1, cb.called)
        d.removeObserver("//event/test", cb.call)
        self.assertEqual(0, len(d._eventObservers.pop(0)))

# 需要导入模块: from twisted.words.xish.utility import EventDispatcher [as 别名]
# 或者: from twisted.words.xish.utility.EventDispatcher import dispatch [as 别名]
    def testStuff(self):
        d = EventDispatcher()
        cb1 = CallbackTracker()
        cb2 = CallbackTracker()
        cb3 = CallbackTracker()

        d.addObserver("/message/body", cb1.call)
        d.addObserver("/message", cb1.call)
        d.addObserver("/presence", cb2.call)
        d.addObserver("//event/testevent", cb3.call)

        msg = Element(("ns", "message"))
        msg.addElement("body")

        pres = Element(("ns", "presence"))
        pres.addElement("presence")

        d.dispatch(msg)
        self.assertEquals(cb1.called, 2)
        self.assertEquals(cb1.obj, msg)
        self.assertEquals(cb2.called, 0)

        d.dispatch(pres)
        self.assertEquals(cb1.called, 2)
        self.assertEquals(cb2.called, 1)
        self.assertEquals(cb2.obj, pres)
        self.assertEquals(cb3.called, 0)

        d.dispatch(d, "//event/testevent")
        self.assertEquals(cb3.called, 1)
        self.assertEquals(cb3.obj, d)

        d.removeObserver("/presence", cb2.call)
        d.dispatch(pres)
        self.assertEquals(cb2.called, 1)

# 需要导入模块: from twisted.words.xish.utility import EventDispatcher [as 别名]
# 或者: from twisted.words.xish.utility.EventDispatcher import dispatch [as 别名]
class XmlStreamStub(object):
    """
    Stub for testing objects that communicate through XML Streams.

    Instances of this stub hold an object in L{xmlstream} that acts like an
    L{XmlStream<twisted.words.xish.xmlstream.XmlStream} after connection stream
    initialization. Stanzas can be sent through it by calling its C{send}
    method with an object implementing
    L{IElement<twisted.words.xish.domish.IElement>} as its first argument.
    These appear in sequence in the L{output} instance variable of the stub.

    For the reverse direction, stanzas passed to L{send} of the stub, will be
    dispatched in the stubbed XmlStream as if it was received over the wire, so
    that registered observers will be called.

    Example::

        >>> stub = XmlStreamStub()
        >>> stub.xmlstream.send(domish.Element((None, 'presence')))
        >>> stub.output[-1].toXml()
        u'<presence/>'
        >>> def cb(stanza):
        ...     print("Got: %r" stanza.toXml())
        >>> stub.xmlstream.addObserver('/presence')
        >>> stub.send(domish.Element((None, 'presence')))
        Got: u'<presence/>'

    @ivar xmlstream: Stubbed XML Stream.
    @type xmlstream: L{EventDispatcher}
    @ivar output: List of stanzas sent to the XML Stream.
    @type output: L{list}
    """

    def __init__(self):
        self.output = []
        self.xmlstream = EventDispatcher()
        self.xmlstream.send = self.output.append

    def send(self, obj):
        """
        Pass an element to the XML Stream as if received.

        @param obj: Element to be dispatched to C{self.xmlstream}.
        @type obj: object implementing
                   L{IElement<twisted.words.xish.domish.IElement>}.
        """
        self.xmlstream.dispatch(obj)

# 需要导入模块: from twisted.words.xish.utility import EventDispatcher [as 别名]
# 或者: from twisted.words.xish.utility.EventDispatcher import dispatch [as 别名]
    def test_addObserverTwice(self):
        """
        Test adding two observers for the same query.

        When the event is dispath both of the observers need to be called.
        """
        d = EventDispatcher()
        cb1 = CallbackTracker()
        cb2 = CallbackTracker()

        d.addObserver("//event/testevent", cb1.call)
        d.addObserver("//event/testevent", cb2.call)
        d.dispatch(d, "//event/testevent")

        self.assertEquals(cb1.called, 1)
        self.assertEquals(cb1.obj, d)
        self.assertEquals(cb2.called, 1)
        self.assertEquals(cb2.obj, d)

# 需要导入模块: from twisted.words.xish.utility import EventDispatcher [as 别名]
# 或者: from twisted.words.xish.utility.EventDispatcher import dispatch [as 别名]
    def test_observerRaisingException(self):
        """
        Test that exceptions in observers do not bubble up to dispatch.

        The exceptions raised in observers should be logged and other
        observers should be called as if nothing happened.
        """

        class OrderedCallbackList(utility.CallbackList):
            def __init__(self):
                self.callbacks = OrderedDict()

        class TestError(Exception):
            pass

        def raiseError(_):
            raise TestError()

        d = EventDispatcher()
        cb = CallbackTracker()

        originalCallbackList = utility.CallbackList

        try:
            utility.CallbackList = OrderedCallbackList

            d.addObserver('//event/test', raiseError)
            d.addObserver('//event/test', cb.call)
            try:
                d.dispatch(None, '//event/test')
            except TestError:
                self.fail("TestError raised. Should have been logged instead.")

            self.assertEqual(1, len(self.flushLoggedErrors(TestError)))
            self.assertEqual(1, cb.called)
        finally:
            utility.CallbackList = originalCallbackList

# 需要导入模块: from twisted.words.xish.utility import EventDispatcher [as 别名]
# 或者: from twisted.words.xish.utility.EventDispatcher import dispatch [as 别名]
    def test_addOnetimeObserverInDispatch(self):
        """
        Test for registration of a onetime observer during dispatch.
        """
        d = EventDispatcher()
        msg = Element(("ns", "message"))
        cb = CallbackTracker()

        def onMessage(msg):
            d.addOnetimeObserver("/message", cb.call)

        d.addOnetimeObserver("/message", onMessage)

        d.dispatch(msg)
        self.assertEquals(cb.called, 0)

        d.dispatch(msg)
        self.assertEquals(cb.called, 1)

        d.dispatch(msg)
        self.assertEquals(cb.called, 1)