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view sat/test/test_plugin_misc_groupblog.py @ 3120:0c29155ac68b

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core: backend autoconnection: A new Connection/autoconnect_backend param can be set for a profile or component to be started automatically with backend. This is specially useful for components, but can be useful for client profile too (e.g. on Android we need to start profile with backend to get notifications, this part will come with following commits). The new Sqlite.getIndParamValues method allows to retrieve the same parameters for all profiles.
author Goffi <goffi@goffi.org>
date Sat, 25 Jan 2020 21:08:32 +0100
parents ab2696e34d29
children 9d0df638c8b4
line wrap: on
line source

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

# SAT: a jabber client
# Copyright (C) 2009-2019 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
import importlib


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

DO_NOT_COUNT_COMMENTS = -1

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


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


def COMMENTS_NODE_URL(publisher=PUBLISHER):
    return "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 """
          <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 """
          <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": str(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)
        importlib.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 __: self.plugin.sendGroupBlog(
                "PUBLIC", [], "test", {}, C.PROFILE[0]
            )
        )
        d.addCallback(lambda __: 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 __: 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 = "silfu23RFWUP)IWNOEIOEFÖ"

        self._initialise(C.PROFILE[0])
        d = self.psclient.publish(SERVICE, NODE_ID, [ITEM_1])
        d.addCallback(
            lambda __: self.plugin.updateGroupBlog(
                pub_data, COMMENTS_NODE_URL_1, new_text, {}, profile_key=C.PROFILE[0]
            )
        )
        d.addCallback(lambda __: 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 __: self.plugin.sendGroupBlogComment(
                COMMENTS_NODE_URL_1, "test", {}, profile_key=C.PROFILE[0]
            )
        )
        d.addCallback(lambda __: 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 __: 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 __: 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 __: 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 __: 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 __: self.psclient.publish(SERVICE, COMMENTS_NODE_ID_1, [COMMENT_1])
        )
        d.addCallback(
            lambda __: 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 __: self.psclient.publish(
                SERVICE, COMMENTS_NODE_ID_1, [COMMENT_1, COMMENT_2]
            )
        )
        d.addCallback(
            lambda __: 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 __: self.plugin.getGroupBlogsAtom(
                PUBLISHER, {"max_": 1}, profile_key=C.PROFILE[0]
            )
        )

        def cb(atom):
            self.assertIsInstance(atom, str)
            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 __: 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 __: self.psclient.publish(
                SERVICE, COMMENTS_NODE_ID_1, [COMMENT_1, COMMENT_2]
            )
        )
        d.addCallback(
            lambda __: 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 __: self.psclient.publish(SERVICE, COMMENTS_NODE_ID_1, [COMMENT_1])
        )
        d.addCallback(
            lambda __: 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 __: self.psclient.publish(
                SERVICE, COMMENTS_NODE_ID_1, [COMMENT_1, COMMENT_2]
            )
        )
        d.addCallback(lambda __: self.psclient.items(SERVICE, NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda __: self.psclient.items(SERVICE, COMMENTS_NODE_ID_1))
        d.addCallback(lambda items: self.assertEqual(len(items), 2))

        d.addCallback(
            lambda __: self.psclient.publish(SERVICE, OTHER_NODE_ID, [ITEM_2])
        )
        d.addCallback(
            lambda __: self.psclient.publish(
                SERVICE, COMMENTS_NODE_ID_2, [COMMENT_1, COMMENT_2]
            )
        )
        d.addCallback(lambda __: self.psclient.items(SERVICE, OTHER_NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda __: 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 __: self.plugin.deleteAllGroupBlogs(C.PROFILE[0]))
        d.addCallback(clean)

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

        d.addCallback(lambda __: self.psclient.items(SERVICE, OTHER_NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda __: 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 __: self.psclient.publish(
                SERVICE, COMMENTS_NODE_ID_1, [COMMENT_1, COMMENT_2]
            )
        )
        d.addCallback(lambda __: self.psclient.items(SERVICE, NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda __: self.psclient.items(SERVICE, COMMENTS_NODE_ID_1))
        d.addCallback(lambda items: self.assertEqual(len(items), 2))

        d.addCallback(
            lambda __: self.psclient.publish(SERVICE, OTHER_NODE_ID, [ITEM_2])
        )
        d.addCallback(
            lambda __: self.psclient.publish(
                SERVICE, COMMENTS_NODE_ID_2, [COMMENT_1, COMMENT_2]
            )
        )
        d.addCallback(lambda __: self.psclient.items(SERVICE, OTHER_NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda __: 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 __: self.plugin.deleteAllGroupBlogsComments(C.PROFILE[0]))
        d.addCallback(clean)

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

        d.addCallback(lambda __: self.psclient.items(SERVICE, OTHER_NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda __: 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 __: self.psclient.publish(
                SERVICE, COMMENTS_NODE_ID_1, [COMMENT_1, COMMENT_2]
            )
        )
        d.addCallback(lambda __: self.psclient.items(SERVICE, NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda __: self.psclient.items(SERVICE, COMMENTS_NODE_ID_1))
        d.addCallback(lambda items: self.assertEqual(len(items), 2))

        d.addCallback(
            lambda __: self.psclient.publish(SERVICE, OTHER_NODE_ID, [ITEM_2])
        )
        d.addCallback(
            lambda __: self.psclient.publish(
                SERVICE, COMMENTS_NODE_ID_2, [COMMENT_1, COMMENT_2]
            )
        )
        d.addCallback(lambda __: self.psclient.items(SERVICE, OTHER_NODE_ID))
        d.addCallback(lambda items: self.assertEqual(len(items), 1))
        d.addCallback(lambda __: 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 __: self.plugin.deleteAllGroupBlogsAndComments(C.PROFILE[0])
        )
        d.addCallback(clean)

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

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