view src/test/test_plugin_misc_groupblog.py @ 1955:633b5c21aefd

backend, frontend: messages refactoring (huge commit, not finished): /!\ database schema has been modified, do a backup before updating message have been refactored, here are the main changes: - languages are now handled - all messages have an uid (internal to SàT) - message updating is anticipated - subject is now first class - new naming scheme is used newMessage => messageNew, getHistory => historyGet, sendMessage => messageSend - minimal compatibility refactoring in quick_frontend/Primitivus, better refactoring should follow - threads handling - delayed messages are saved into history - info messages may also be saved in history (e.g. to keep track of people joining/leaving a room) - duplicate messages should be avoided - historyGet return messages in right order, no need to sort again - plugins have been updated to follow new features, some of them need to be reworked (e.g. OTR) - XEP-0203 (Delayed Delivery) is now fully handled in core, the plugin just handle disco and creation of a delay element - /!\ jp and Libervia are currently broken, as some features of Primitivus It has been put in one huge commit to avoid breaking messaging between changes. This is the main part of message refactoring, other commits will follow to take profit of the new features/behaviour.
author Goffi <goffi@goffi.org>
date Tue, 24 May 2016 22:11:04 +0200
parents 2daf7b4c6756
children 8b37a62336c3
line wrap: on
line source

#!/usr/bin/env python2
# -*- coding: utf-8 -*-

# SAT: a jabber client
# Copyright (C) 2009-2016 Jérôme Poisson (goffi@goffi.org)
# Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.org)

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# This program 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 Affero General Public License for more details.

# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

""" Plugin groupblogs """

from constants import Const as C
from sat.test import helpers, helpers_plugins
from sat.plugins import plugin_misc_groupblog
from sat.plugins import plugin_xep_0060
from sat.plugins import plugin_xep_0277
from sat.plugins import plugin_xep_0163
from sat.plugins import plugin_misc_text_syntaxes
from twisted.internet import defer
from twisted.words.protocols.jabber import jid


NS_PUBSUB = 'http://jabber.org/protocol/pubsub'

DO_NOT_COUNT_COMMENTS = -1

SERVICE = u'pubsub.example.com'
PUBLISHER = u'test@example.org'
OTHER_PUBLISHER = u'other@xmpp.net'
NODE_ID = u'urn:xmpp:groupblog:{publisher}'.format(publisher=PUBLISHER)
OTHER_NODE_ID = u'urn:xmpp:groupblog:{publisher}'.format(publisher=OTHER_PUBLISHER)
ITEM_ID_1 = u'c745a688-9b02-11e3-a1a3-c0143dd4fe51'
COMMENT_ID_1 = u'd745a688-9b02-11e3-a1a3-c0143dd4fe52'
COMMENT_ID_2 = u'e745a688-9b02-11e3-a1a3-c0143dd4fe53'


def COMMENTS_NODE_ID(publisher=PUBLISHER):
    return u'urn:xmpp:comments:_{id}__urn:xmpp:groupblog:{publisher}'.format(id=ITEM_ID_1, publisher=publisher)


def COMMENTS_NODE_URL(publisher=PUBLISHER):
    return u'xmpp:{service}?node={node}'.format(service=SERVICE, id=ITEM_ID_1,
                                                node=COMMENTS_NODE_ID(publisher).replace(':', '%3A').replace('@', '%40'))


def ITEM(publisher=PUBLISHER):
    return u"""
          <item id='{id}' xmlns='{ns}'>
            <entry>
              <title type='text'>The Uses of This World</title>
              <id>{id}</id>
              <updated>2003-12-12T17:47:23Z</updated>
              <published>2003-12-12T17:47:23Z</published>
              <link href='{comments_node_url}' rel='replies' title='comments'/>
              <author>
                <name>{publisher}</name>
              </author>
            </entry>
          </item>
        """.format(ns=NS_PUBSUB, id=ITEM_ID_1, publisher=publisher, comments_node_url=COMMENTS_NODE_URL(publisher))


def COMMENT(id_=COMMENT_ID_1):
    return u"""
          <item id='{id}' xmlns='{ns}'>
            <entry>
              <title type='text'>The Uses of This World</title>
              <id>{id}</id>
              <updated>2003-12-12T17:47:23Z</updated>
              <published>2003-12-12T17:47:23Z</published>
              <author>
                <name>{publisher}</name>
              </author>
            </entry>
          </item>
        """.format(ns=NS_PUBSUB, id=id_, publisher=PUBLISHER)


def ITEM_DATA(id_=ITEM_ID_1, count=0):
    res = {'id': ITEM_ID_1,
           'type': 'main_item',
           'content': 'The Uses of This World',
           'author': PUBLISHER,
           'updated': '1071251243.0',
           'published': '1071251243.0',
           'service': SERVICE,
           'comments': COMMENTS_NODE_URL_1,
           'comments_service': SERVICE,
           'comments_node': COMMENTS_NODE_ID_1}
    if count != DO_NOT_COUNT_COMMENTS:
        res.update({'comments_count': unicode(count)})
    return res


def COMMENT_DATA(id_=COMMENT_ID_1):
    return {'id': id_,
            'type': 'comment',
            'content': 'The Uses of This World',
            'author': PUBLISHER,
            'updated': '1071251243.0',
            'published': '1071251243.0',
            'service': SERVICE,
            'node': COMMENTS_NODE_ID_1,
            'verified_publisher': 'false'}


COMMENTS_NODE_ID_1 = COMMENTS_NODE_ID()
COMMENTS_NODE_ID_2 = COMMENTS_NODE_ID(OTHER_PUBLISHER)
COMMENTS_NODE_URL_1 = COMMENTS_NODE_URL()
COMMENTS_NODE_URL_2 = COMMENTS_NODE_URL(OTHER_PUBLISHER)
ITEM_1 = ITEM()
ITEM_2 = ITEM(OTHER_PUBLISHER)
COMMENT_1 = COMMENT(COMMENT_ID_1)
COMMENT_2 = COMMENT(COMMENT_ID_2)


def ITEM_DATA_1(count=0):
    return ITEM_DATA(count=count)

COMMENT_DATA_1 = COMMENT_DATA()
COMMENT_DATA_2 = COMMENT_DATA(COMMENT_ID_2)


class XEP_groupblogTest(helpers.SatTestCase):

    def setUp(self):
        self.host = helpers.FakeSAT()
        self.host.plugins['XEP-0060'] = plugin_xep_0060.XEP_0060(self.host)
        self.host.plugins['XEP-0163'] = plugin_xep_0163.XEP_0163(self.host)
        reload(plugin_misc_text_syntaxes)  # reload the plugin to avoid conflict error
        self.host.plugins['TEXT-SYNTAXES'] = plugin_misc_text_syntaxes.TextSyntaxes(self.host)
        self.host.plugins['XEP-0277'] = plugin_xep_0277.XEP_0277(self.host)
        self.plugin = plugin_misc_groupblog.GroupBlog(self.host)
        self.plugin._initialise = self._initialise
        self.__initialised = False
        self._initialise(C.PROFILE[0])

    def _initialise(self, profile_key):
        profile = profile_key
        client = self.host.getClient(profile)
        if not self.__initialised:
            client.item_access_pubsub = jid.JID(SERVICE)
            xep_0060 = self.host.plugins['XEP-0060']
            client.pubsub_client = helpers_plugins.FakeSatPubSubClient(self.host, xep_0060)
            client.pubsub_client.parent = client
            self.psclient = client.pubsub_client
            helpers.FakeSAT.getDiscoItems = self.psclient.service_getDiscoItems
            self.__initialised = True
        return defer.succeed((profile, client))

    def _addItem(self, profile, item, parent_node=None):
        client = self.host.getClient(profile)
        client.pubsub_client._addItem(item, parent_node)

    def test_sendGroupBlog(self):
        self._initialise(C.PROFILE[0])
        d = self.psclient.items(SERVICE, NODE_ID)
        d.addCallback(lambda items: self.assertEqual(len(items), 0))
        d.addCallback(lambda dummy: self.plugin.sendGroupBlog('PUBLIC', [], 'test', {}, C.PROFILE[0]))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, NODE_ID))
        return d.addCallback(lambda items: self.assertEqual(len(items), 1))

    def test_deleteGroupBlog(self):
        pub_data = (SERVICE, NODE_ID, ITEM_ID_1)
        self.host.bridge.expectCall('personalEvent', C.JID_STR[0],
                                    "MICROBLOG_DELETE",
                                    {'type': 'main_item', 'id': ITEM_ID_1},
                                    C.PROFILE[0])

        d = self.psclient.publish(SERVICE, NODE_ID, [ITEM_1])
        d.addCallback(lambda dummy: self.plugin.deleteGroupBlog(pub_data, COMMENTS_NODE_URL_1, profile_key=C.PROFILE[0]))
        return d.addCallback(self.assertEqual, None)

    def test_updateGroupBlog(self):
        pub_data = (SERVICE, NODE_ID, ITEM_ID_1)
        new_text = u"silfu23RFWUP)IWNOEIOEFÖ"

        self._initialise(C.PROFILE[0])
        d = self.psclient.publish(SERVICE, NODE_ID, [ITEM_1])
        d.addCallback(lambda dummy: self.plugin.updateGroupBlog(pub_data, COMMENTS_NODE_URL_1, new_text, {}, profile_key=C.PROFILE[0]))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, NODE_ID))
        return d.addCallback(lambda items: self.assertEqual(''.join(items[0].entry.title.children), new_text))

    def test_sendGroupBlogComment(self):
        self._initialise(C.PROFILE[0])
        d = self.psclient.items(SERVICE, NODE_ID)
        d.addCallback(lambda items: self.assertEqual(len(items), 0))
        d.addCallback(lambda dummy: self.plugin.sendGroupBlogComment(COMMENTS_NODE_URL_1, 'test', {}, profile_key=C.PROFILE[0]))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, COMMENTS_NODE_ID_1))
        return d.addCallback(lambda items: self.assertEqual(len(items), 1))

    def test_getGroupBlogs(self):
        self._initialise(C.PROFILE[0])
        d = self.psclient.publish(SERVICE, NODE_ID, [ITEM_1])
        d.addCallback(lambda dummy: self.plugin.getGroupBlogs(PUBLISHER, profile_key=C.PROFILE[0]))
        result = ([ITEM_DATA_1()], {'count': '1', 'index': '0', 'first': ITEM_ID_1, 'last': ITEM_ID_1})
        return d.addCallback(self.assertEqual, result)

    def test_getGroupBlogsNoCount(self):
        self._initialise(C.PROFILE[0])
        d = self.psclient.publish(SERVICE, NODE_ID, [ITEM_1])
        d.addCallback(lambda dummy: self.plugin.getGroupBlogs(PUBLISHER, count_comments=False, profile_key=C.PROFILE[0]))
        result = ([ITEM_DATA_1(DO_NOT_COUNT_COMMENTS)], {'count': '1', 'index': '0', 'first': ITEM_ID_1, 'last': ITEM_ID_1})
        return d.addCallback(self.assertEqual, result)

    def test_getGroupBlogsWithIDs(self):
        self._initialise(C.PROFILE[0])
        d = self.psclient.publish(SERVICE, NODE_ID, [ITEM_1])
        d.addCallback(lambda dummy: self.plugin.getGroupBlogs(PUBLISHER, [ITEM_ID_1], profile_key=C.PROFILE[0]))
        result = ([ITEM_DATA_1()], {'count': '1', 'index': '0', 'first': ITEM_ID_1, 'last': ITEM_ID_1})
        return d.addCallback(self.assertEqual, result)

    def test_getGroupBlogsWithRSM(self):
        self._initialise(C.PROFILE[0])
        d = self.psclient.publish(SERVICE, NODE_ID, [ITEM_1])
        d.addCallback(lambda dummy: self.plugin.getGroupBlogs(PUBLISHER, rsm_data={'max_': 1}, profile_key=C.PROFILE[0]))
        result = ([ITEM_DATA_1()], {'count': '1', 'index': '0', 'first': ITEM_ID_1, 'last': ITEM_ID_1})
        return d.addCallback(self.assertEqual, result)

    def test_getGroupBlogsWithComments(self):
        self._initialise(C.PROFILE[0])
        d = self.psclient.publish(SERVICE, NODE_ID, [ITEM_1])
        d.addCallback(lambda dummy: self.psclient.publish(SERVICE, COMMENTS_NODE_ID_1, [COMMENT_1]))
        d.addCallback(lambda dummy: self.plugin.getGroupBlogsWithComments(PUBLISHER, [], profile_key=C.PROFILE[0]))
        result = ([(ITEM_DATA_1(1), ([COMMENT_DATA_1],
                                     {'count': '1', 'index': '0', 'first': COMMENT_ID_1, 'last': COMMENT_ID_1}))],
                  {'count': '1', 'index': '0', 'first': ITEM_ID_1, 'last': ITEM_ID_1})
        return d.addCallback(self.assertEqual, result)

    def test_getGroupBlogsWithComments2(self):
        self._initialise(C.PROFILE[0])
        d = self.psclient.publish(SERVICE, NODE_ID, [ITEM_1])
        d.addCallback(lambda dummy: self.psclient.publish(SERVICE, COMMENTS_NODE_ID_1, [COMMENT_1, COMMENT_2]))
        d.addCallback(lambda dummy: self.plugin.getGroupBlogsWithComments(PUBLISHER, [], profile_key=C.PROFILE[0]))
        result = ([(ITEM_DATA_1(2), ([COMMENT_DATA_1, COMMENT_DATA_2],
                                     {'count': '2', 'index': '0', 'first': COMMENT_ID_1, 'last': COMMENT_ID_2}))],
                  {'count': '1', 'index': '0', 'first': ITEM_ID_1, 'last': ITEM_ID_1})

        return d.addCallback(self.assertEqual, result)

    def test_getGroupBlogsAtom(self):
        self._initialise(C.PROFILE[0])
        d = self.psclient.publish(SERVICE, NODE_ID, [ITEM_1])
        d.addCallback(lambda dummy: self.plugin.getGroupBlogsAtom(PUBLISHER, {'max_': 1}, profile_key=C.PROFILE[0]))

        def cb(atom):
            self.assertIsInstance(atom, unicode)
            self.assertTrue(atom.startswith('<?xml version="1.0" encoding="utf-8"?>'))

        return d.addCallback(cb)

    def test_getMassiveGroupBlogs(self):
        self._initialise(C.PROFILE[0])
        d = self.psclient.publish(SERVICE, NODE_ID, [ITEM_1])
        d.addCallback(lambda dummy: self.plugin.getMassiveGroupBlogs('JID', [jid.JID(PUBLISHER)], {'max_': 1}, profile_key=C.PROFILE[0]))
        result = {PUBLISHER: ([ITEM_DATA_1()], {'count': '1', 'index': '0', 'first': ITEM_ID_1, 'last': ITEM_ID_1})}

        def clean(res):
            del self.host.plugins['XEP-0060'].node_cache[C.PROFILE[0] + '@found@' + SERVICE]
            return res

        d.addCallback(clean)
        d.addCallback(self.assertEqual, result)

    def test_getMassiveGroupBlogsWithComments(self):
        self._initialise(C.PROFILE[0])
        d = self.psclient.publish(SERVICE, NODE_ID, [ITEM_1])
        d.addCallback(lambda dummy: self.psclient.publish(SERVICE, COMMENTS_NODE_ID_1, [COMMENT_1, COMMENT_2]))
        d.addCallback(lambda dummy: self.plugin.getMassiveGroupBlogs('JID', [jid.JID(PUBLISHER)], {'max_': 1}, profile_key=C.PROFILE[0]))
        result = {PUBLISHER: ([ITEM_DATA_1(2)], {'count': '1', 'index': '0', 'first': ITEM_ID_1, 'last': ITEM_ID_1})}

        def clean(res):
            del self.host.plugins['XEP-0060'].node_cache[C.PROFILE[0] + '@found@' + SERVICE]
            return res

        d.addCallback(clean)
        d.addCallback(self.assertEqual, result)

    def test_getGroupBlogComments(self):
        self._initialise(C.PROFILE[0])
        d = self.psclient.publish(SERVICE, NODE_ID, [ITEM_1])
        d.addCallback(lambda dummy: self.psclient.publish(SERVICE, COMMENTS_NODE_ID_1, [COMMENT_1]))
        d.addCallback(lambda dummy: self.plugin.getGroupBlogComments(SERVICE, COMMENTS_NODE_ID_1, {'max_': 1}, profile_key=C.PROFILE[0]))
        result = ([COMMENT_DATA_1], {'count': '1', 'index': '0', 'first': COMMENT_ID_1, 'last': COMMENT_ID_1})
        return d.addCallback(self.assertEqual, result)

    def test_subscribeGroupBlog(self):
        self._initialise(C.PROFILE[0])
        d = self.plugin.subscribeGroupBlog(PUBLISHER, profile_key=C.PROFILE[0])
        return d.addCallback(self.assertEqual, None)

    def test_massiveSubscribeGroupBlogs(self):
        self._initialise(C.PROFILE[0])
        d = self.plugin.massiveSubscribeGroupBlogs('JID', [jid.JID(PUBLISHER)], profile_key=C.PROFILE[0])

        def clean(res):
            del self.host.plugins['XEP-0060'].node_cache[C.PROFILE[0] + '@found@' + SERVICE]
            del self.host.plugins['XEP-0060'].node_cache[C.PROFILE[0] + '@subscriptions@' + SERVICE]
            return res

        d.addCallback(clean)
        return d.addCallback(self.assertEqual, None)

    def test_deleteAllGroupBlogs(self):
        """Delete our main node and associated comments node"""
        self._initialise(C.PROFILE[0])
        self.host.profiles[C.PROFILE[0]].roster.addItem(jid.JID(OTHER_PUBLISHER))
        d = self.psclient.publish(SERVICE, NODE_ID, [ITEM_1])
        d.addCallback(lambda dummy: self.psclient.publish(SERVICE, COMMENTS_NODE_ID_1, [COMMENT_1, COMMENT_2]))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, COMMENTS_NODE_ID_1))
        d.addCallback(lambda items: self.assertEqual(len(items), 2))

        d.addCallback(lambda dummy: self.psclient.publish(SERVICE, OTHER_NODE_ID, [ITEM_2]))
        d.addCallback(lambda dummy: self.psclient.publish(SERVICE, COMMENTS_NODE_ID_2, [COMMENT_1, COMMENT_2]))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, OTHER_NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, COMMENTS_NODE_ID_2))
        d.addCallback(lambda items: self.assertEqual(len(items), 2))

        def clean(res):
            del self.host.plugins['XEP-0060'].node_cache[C.PROFILE[0] + '@found@' + SERVICE]
            return res

        d.addCallback(lambda dummy: self.plugin.deleteAllGroupBlogs(C.PROFILE[0]))
        d.addCallback(clean)

        d.addCallback(lambda dummy: self.psclient.items(SERVICE, NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 0))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, COMMENTS_NODE_ID_1))
        d.addCallback(lambda items: self.assertEqual(len(items), 0))

        d.addCallback(lambda dummy: self.psclient.items(SERVICE, OTHER_NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, COMMENTS_NODE_ID_2))
        d.addCallback(lambda items: self.assertEqual(len(items), 2))
        return d

    def test_deleteAllGroupBlogsComments(self):
        """Delete the comments we posted on other node's"""
        self._initialise(C.PROFILE[0])
        self.host.profiles[C.PROFILE[0]].roster.addItem(jid.JID(OTHER_PUBLISHER))
        d = self.psclient.publish(SERVICE, NODE_ID, [ITEM_1])
        d.addCallback(lambda dummy: self.psclient.publish(SERVICE, COMMENTS_NODE_ID_1, [COMMENT_1, COMMENT_2]))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, COMMENTS_NODE_ID_1))
        d.addCallback(lambda items: self.assertEqual(len(items), 2))

        d.addCallback(lambda dummy: self.psclient.publish(SERVICE, OTHER_NODE_ID, [ITEM_2]))
        d.addCallback(lambda dummy: self.psclient.publish(SERVICE, COMMENTS_NODE_ID_2, [COMMENT_1, COMMENT_2]))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, OTHER_NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, COMMENTS_NODE_ID_2))
        d.addCallback(lambda items: self.assertEqual(len(items), 2))

        def clean(res):
            del self.host.plugins['XEP-0060'].node_cache[C.PROFILE[0] + '@found@' + SERVICE]
            return res

        d.addCallback(lambda dummy: self.plugin.deleteAllGroupBlogsComments(C.PROFILE[0]))
        d.addCallback(clean)

        d.addCallback(lambda dummy: self.psclient.items(SERVICE, NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, COMMENTS_NODE_ID_1))
        d.addCallback(lambda items: self.assertEqual(len(items), 2))

        d.addCallback(lambda dummy: self.psclient.items(SERVICE, OTHER_NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, COMMENTS_NODE_ID_2))
        d.addCallback(lambda items: self.assertEqual(len(items), 0))
        return d

    def test_deleteAllGroupBlogsAndComments(self):
        self._initialise(C.PROFILE[0])
        self.host.profiles[C.PROFILE[0]].roster.addItem(jid.JID(OTHER_PUBLISHER))
        d = self.psclient.publish(SERVICE, NODE_ID, [ITEM_1])
        d.addCallback(lambda dummy: self.psclient.publish(SERVICE, COMMENTS_NODE_ID_1, [COMMENT_1, COMMENT_2]))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, COMMENTS_NODE_ID_1))
        d.addCallback(lambda items: self.assertEqual(len(items), 2))

        d.addCallback(lambda dummy: self.psclient.publish(SERVICE, OTHER_NODE_ID, [ITEM_2]))
        d.addCallback(lambda dummy: self.psclient.publish(SERVICE, COMMENTS_NODE_ID_2, [COMMENT_1, COMMENT_2]))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, OTHER_NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, COMMENTS_NODE_ID_2))
        d.addCallback(lambda items: self.assertEqual(len(items), 2))

        def clean(res):
            del self.host.plugins['XEP-0060'].node_cache[C.PROFILE[0] + '@found@' + SERVICE]
            return res

        d.addCallback(lambda dummy: self.plugin.deleteAllGroupBlogsAndComments(C.PROFILE[0]))
        d.addCallback(clean)

        d.addCallback(lambda dummy: self.psclient.items(SERVICE, NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 0))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, COMMENTS_NODE_ID_1))
        d.addCallback(lambda items: self.assertEqual(len(items), 0))

        d.addCallback(lambda dummy: self.psclient.items(SERVICE, OTHER_NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda dummy: self.psclient.items(SERVICE, COMMENTS_NODE_ID_2))
        d.addCallback(lambda items: self.assertEqual(len(items), 0))
        return d