530 lines
18 KiB
Python
530 lines
18 KiB
Python
"""
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SleekXMPP: The Sleek XMPP Library
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Copyright (C) 2010 Nathanael C. Fritz, Lance J.T. Stout
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This file is part of SleekXMPP.
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See the file LICENSE for copying permission.
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"""
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import unittest
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import socket
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try:
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import queue
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except ImportError:
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import Queue as queue
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import sleekxmpp
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from sleekxmpp import ClientXMPP
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from sleekxmpp.stanza import Message, Iq, Presence
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from sleekxmpp.xmlstream.stanzabase import registerStanzaPlugin, ET
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from sleekxmpp.xmlstream.tostring import tostring
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class TestSocket(object):
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"""
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A dummy socket that reads and writes to queues instead
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of an actual networking socket.
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Methods:
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nextSent -- Return the next sent stanza.
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recvData -- Make a stanza available to read next.
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recv -- Read the next stanza from the socket.
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send -- Write a stanza to the socket.
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makefile -- Dummy call, returns self.
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read -- Read the next stanza from the socket.
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"""
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def __init__(self, *args, **kwargs):
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"""
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Create a new test socket.
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Arguments:
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Same as arguments for socket.socket
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"""
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self.socket = socket.socket(*args, **kwargs)
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self.recv_queue = queue.Queue()
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self.send_queue = queue.Queue()
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def __getattr__(self, name):
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"""
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Return attribute values of internal, dummy socket.
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Some attributes and methods are disabled to prevent the
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socket from connecting to the network.
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Arguments:
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name -- Name of the attribute requested.
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"""
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def dummy(*args):
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"""Method to do nothing and prevent actual socket connections."""
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return None
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overrides = {'connect': dummy,
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'close': dummy,
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'shutdown': dummy}
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return overrides.get(name, getattr(self.socket, name))
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# ------------------------------------------------------------------
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# Testing Interface
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def nextSent(self, timeout=None):
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"""
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Get the next stanza that has been 'sent'.
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Arguments:
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timeout -- Optional timeout for waiting for a new value.
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"""
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args = {'block': False}
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if timeout is not None:
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args = {'block': True, 'timeout': timeout}
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try:
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return self.send_queue.get(**args)
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except:
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return None
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def recvData(self, data):
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"""
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Add data to the receiving queue.
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Arguments:
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data -- String data to 'write' to the socket to be received
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by the XMPP client.
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"""
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self.recv_queue.put(data)
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# ------------------------------------------------------------------
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# Socket Interface
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def recv(self, *args, **kwargs):
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"""
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Read a value from the received queue.
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Arguments:
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Placeholders. Same as for socket.Socket.recv.
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"""
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return self.read(block=True)
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def send(self, data):
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"""
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Send data by placing it in the send queue.
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Arguments:
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data -- String value to write.
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"""
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self.send_queue.put(data)
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# ------------------------------------------------------------------
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# File Socket
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def makefile(self, *args, **kwargs):
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"""
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File socket version to use with ElementTree.
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Arguments:
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Placeholders, same as socket.Socket.makefile()
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"""
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return self
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def read(self, block=True, timeout=None, **kwargs):
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"""
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Implement the file socket interface.
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Arguments:
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block -- Indicate if the read should block until a
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value is ready.
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timeout -- Time in seconds a block should last before
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returning None.
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"""
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if timeout is not None:
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block = True
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try:
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return self.recv_queue.get(block, timeout)
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except:
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return None
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class SleekTest(unittest.TestCase):
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"""
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A SleekXMPP specific TestCase class that provides
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methods for comparing message, iq, and presence stanzas.
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Methods:
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Message -- Create a Message stanza object.
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Iq -- Create an Iq stanza object.
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Presence -- Create a Presence stanza object.
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checkMessage -- Compare a Message stanza against an XML string.
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checkIq -- Compare an Iq stanza against an XML string.
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checkPresence -- Compare a Presence stanza against an XML string.
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streamStart -- Initialize a dummy XMPP client.
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streamRecv -- Queue data for XMPP client to receive.
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streamSendMessage -- Check that the XMPP client sent the given
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Message stanza.
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streamSendIq -- Check that the XMPP client sent the given
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Iq stanza.
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streamSendPresence -- Check taht the XMPP client sent the given
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Presence stanza.
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streamClose -- Disconnect the XMPP client.
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fix_namespaces -- Add top-level namespace to an XML object.
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compare -- Compare XML objects against each other.
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"""
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# ------------------------------------------------------------------
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# Shortcut methods for creating stanza objects
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def Message(self, *args, **kwargs):
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"""
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Create a Message stanza.
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Uses same arguments as StanzaBase.__init__
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Arguments:
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xml -- An XML object to use for the Message's values.
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"""
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return Message(None, *args, **kwargs)
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def Iq(self, *args, **kwargs):
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"""
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Create an Iq stanza.
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Uses same arguments as StanzaBase.__init__
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Arguments:
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xml -- An XML object to use for the Iq's values.
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"""
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return Iq(None, *args, **kwargs)
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def Presence(self, *args, **kwargs):
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"""
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Create a Presence stanza.
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Uses same arguments as StanzaBase.__init__
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Arguments:
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xml -- An XML object to use for the Iq's values.
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"""
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return Presence(None, *args, **kwargs)
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# ------------------------------------------------------------------
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# Methods for comparing stanza objects to XML strings
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def checkStanza(self, stanza_class, stanza, xml_string,
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defaults=None, use_values=True):
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"""
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Create and compare several stanza objects to a correct XML string.
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If use_values is False, test using getStanzaValues() and
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setStanzaValues() will not be used.
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Some stanzas provide default values for some interfaces, but
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these defaults can be problematic for testing since they can easily
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be forgotten when supplying the XML string. A list of interfaces that
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use defaults may be provided and the generated stanzas will use the
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default values for those interfaces if needed.
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However, correcting the supplied XML is not possible for interfaces
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that add or remove XML elements. Only interfaces that map to XML
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attributes may be set using the defaults parameter. The supplied XML
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must take into account any extra elements that are included by default.
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Arguments:
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stanza_class -- The class of the stanza being tested.
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stanza -- The stanza object to test.
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xml_string -- A string version of the correct XML expected.
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defaults -- A list of stanza interfaces that have default
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values. These interfaces will be set to their
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defaults for the given and generated stanzas to
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prevent unexpected test failures.
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use_values -- Indicates if testing using getStanzaValues() and
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setStanzaValues() should be used. Defaults to
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True.
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"""
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xml = ET.fromstring(xml_string)
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# Ensure that top level namespaces are used, even if they
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# were not provided.
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self.fix_namespaces(stanza.xml, 'jabber:client')
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self.fix_namespaces(xml, 'jabber:client')
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stanza2 = stanza_class(xml=xml)
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if use_values:
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# Using getStanzaValues() and setStanzaValues() will add
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# XML for any interface that has a default value. We need
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# to set those defaults on the existing stanzas and XML
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# so that they will compare correctly.
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default_stanza = stanza_class()
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if defaults is None:
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defaults = []
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for interface in defaults:
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stanza[interface] = stanza[interface]
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stanza2[interface] = stanza2[interface]
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# Can really only automatically add defaults for top
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# level attribute values. Anything else must be accounted
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# for in the provided XML string.
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if interface not in xml.attrib:
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if interface in default_stanza.xml.attrib:
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value = default_stanza.xml.attrib[interface]
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xml.attrib[interface] = value
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values = stanza2.getStanzaValues()
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stanza3 = stanza_class()
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stanza3.setStanzaValues(values)
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debug = "Three methods for creating stanzas do not match.\n"
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debug += "Given XML:\n%s\n" % tostring(xml)
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debug += "Given stanza:\n%s\n" % tostring(stanza.xml)
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debug += "Generated stanza:\n%s\n" % tostring(stanza2.xml)
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debug += "Second generated stanza:\n%s\n" % tostring(stanza3.xml)
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result = self.compare(xml, stanza.xml, stanza2.xml, stanza3.xml)
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else:
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debug = "Two methods for creating stanzas do not match.\n"
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debug += "Given XML:\n%s\n" % tostring(xml)
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debug += "Given stanza:\n%s\n" % tostring(stanza.xml)
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debug += "Generated stanza:\n%s\n" % tostring(stanza2.xml)
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result = self.compare(xml, stanza.xml, stanza2.xml)
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self.failUnless(result, debug)
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def checkMessage(self, msg, xml_string, use_values=True):
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"""
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Create and compare several message stanza objects to a
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correct XML string.
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If use_values is False, the test using getStanzaValues() and
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setStanzaValues() will not be used.
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Arguments:
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msg -- The Message stanza object to check.
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xml_string -- The XML contents to compare against.
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use_values -- Indicates if the test using getStanzaValues
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and setStanzaValues should be used. Defaults
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to True.
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"""
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return self.checkStanza(Message, msg, xml_string,
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defaults=['type'],
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use_values = use_values)
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def checkIq(self, iq, xml_string, use_values=True):
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"""
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Create and compare several iq stanza objects to a
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correct XML string.
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If use_values is False, the test using getStanzaValues() and
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setStanzaValues() will not be used.
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Arguments:
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iq -- The Iq stanza object to check.
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xml_string -- The XML contents to compare against.
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use_values -- Indicates if the test using getStanzaValues
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and setStanzaValues should be used. Defaults
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to True.
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"""
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return self.checkStanza(Iq, iq, xml_string, use_values=use_values)
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def checkPresence(self, pres, xml_string, use_values=True):
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"""
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Create and compare several presence stanza objects to a
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correct XML string.
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If use_values is False, the test using getStanzaValues() and
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setStanzaValues() will not be used.
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Arguments:
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iq -- The Iq stanza object to check.
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xml_string -- The XML contents to compare against.
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use_values -- Indicates if the test using getStanzaValues
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and setStanzaValues should be used. Defaults
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to True.
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"""
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return self.checkStanza(Presence, pres, xml_string,
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defaults=['priority'],
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use_values=use_values)
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# ------------------------------------------------------------------
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# Methods for simulating stanza streams.
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def streamStart(self, mode='client', skip=True):
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"""
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Initialize an XMPP client or component using a dummy XML stream.
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Arguments:
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mode -- Either 'client' or 'component'. Defaults to 'client'.
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skip -- Indicates if the first item in the sent queue (the
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stream header) should be removed. Tests that wish
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to test initializing the stream should set this to
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False. Otherwise, the default of True should be used.
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"""
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if mode == 'client':
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self.xmpp = ClientXMPP('tester@localhost', 'test')
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self.xmpp.setSocket(TestSocket())
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self.xmpp.state.set('reconnect', False)
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self.xmpp.state.set('is client', True)
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self.xmpp.state.set('connected', True)
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# Must have the stream header ready for xmpp.process() to work
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self.xmpp.socket.recvData(self.xmpp.stream_header)
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self.xmpp.connectTCP = lambda a, b, c, d: True
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self.xmpp.startTLS = lambda: True
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self.xmpp.process(threaded=True)
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if skip:
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# Clear startup stanzas
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self.xmpp.socket.nextSent(timeout=0.01)
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def streamRecv(self, data):
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"""
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Pass data to the dummy XMPP client as if it came from an XMPP server.
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Arguments:
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data -- String stanza XML to be received and processed by the
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XMPP client or component.
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"""
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data = str(data)
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self.xmpp.socket.recvData(data)
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def streamSendMessage(self, data, use_values=True, timeout=.1):
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"""
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Check that the XMPP client sent the given stanza XML.
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Extracts the next sent stanza and compares it with the given
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XML using checkMessage.
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Arguments:
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data -- The XML string of the expected Message stanza,
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or an equivalent stanza object.
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use_values -- Modifies the type of tests used by checkMessage.
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timeout -- Time in seconds to wait for a stanza before
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failing the check.
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"""
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if isinstance(data, str):
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data = self.Message(xml=ET.fromstring(data))
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sent = self.xmpp.socket.nextSent(timeout)
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self.checkMessage(data, sent, use_values)
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def streamSendIq(self, data, use_values=True, timeout=.1):
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"""
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Check that the XMPP client sent the given stanza XML.
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Extracts the next sent stanza and compares it with the given
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XML using checkIq.
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Arguments:
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data -- The XML string of the expected Iq stanza,
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or an equivalent stanza object.
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use_values -- Modifies the type of tests used by checkIq.
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timeout -- Time in seconds to wait for a stanza before
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failing the check.
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"""
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if isinstance(data, str):
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data = self.Iq(xml=ET.fromstring(data))
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sent = self.xmpp.socket.nextSent(timeout)
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self.checkIq(data, sent, use_values)
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def streamSendPresence(self, data, use_values=True, timeout=.1):
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"""
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Check that the XMPP client sent the given stanza XML.
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Extracts the next sent stanza and compares it with the given
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XML using checkPresence.
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Arguments:
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data -- The XML string of the expected Presence stanza,
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or an equivalent stanza object.
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use_values -- Modifies the type of tests used by checkPresence.
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timeout -- Time in seconds to wait for a stanza before
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failing the check.
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"""
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if isinstance(data, str):
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data = self.Presence(xml=ET.fromstring(data))
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sent = self.xmpp.socket.nextSent(timeout)
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self.checkPresence(data, sent, use_values)
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def streamClose(self):
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"""
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Disconnect the dummy XMPP client.
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Can be safely called even if streamStart has not been called.
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Must be placed in the tearDown method of a test class to ensure
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that the XMPP client is disconnected after an error.
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"""
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if hasattr(self, 'xmpp') and self.xmpp is not None:
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self.xmpp.disconnect()
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self.xmpp.socket.recvData(self.xmpp.stream_footer)
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# ------------------------------------------------------------------
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# XML Comparison and Cleanup
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def fix_namespaces(self, xml, ns):
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"""
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Assign a namespace to an element and any children that
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don't have a namespace.
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Arguments:
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xml -- The XML object to fix.
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ns -- The namespace to add to the XML object.
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"""
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if xml.tag.startswith('{'):
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return
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xml.tag = '{%s}%s' % (ns, xml.tag)
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for child in xml.getchildren():
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self.fix_namespaces(child, ns)
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def compare(self, xml, *other):
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"""
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Compare XML objects.
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Arguments:
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xml -- The XML object to compare against.
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*other -- The list of XML objects to compare.
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"""
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if not other:
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return False
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# Compare multiple objects
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if len(other) > 1:
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for xml2 in other:
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if not self.compare(xml, xml2):
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return False
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return True
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other = other[0]
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# Step 1: Check tags
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if xml.tag != other.tag:
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return False
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# Step 2: Check attributes
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if xml.attrib != other.attrib:
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return False
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# Step 3: Check text
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if xml.text is None:
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xml.text = ""
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if other.text is None:
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other.text = ""
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xml.text = xml.text.strip()
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other.text = other.text.strip()
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if xml.text != other.text:
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return False
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# Step 4: Recursively check children
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for child in xml:
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child2s = other.findall("%s" % child.tag)
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if child2s is None:
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return False
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for child2 in child2s:
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if self.compare(child, child2):
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break
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else:
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return False
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# Everything matches
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return True
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