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view src/test/test_plugin_misc_groupblog.py @ 2444:30278ea1ca7c

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plugin XEP-0060: added node watching methods to bridge: new methods psNodeWatchAdd and psNodeWatchRemove allows to set a watch for the time of the session on one node, to have a signal called when something change on this node. This signal (psEventRaw) send raw data (raw XML), in opposition to psEvent which is there to send high level data (e.g. parsed blog data). Those method are primarely there to let frontends manage local cache for pubsub nodes.
author Goffi <goffi@goffi.org>
date Sun, 19 Nov 2017 16:51:39 +0100
parents 8b37a62336c3
children 0046283a285d
line wrap: on
line source

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

# SAT: a jabber client
# Copyright (C) 2009-2017 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