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path: root/tests/events/test_utils.py
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# -*- coding: utf-8 -*-
# Copyright 2015, 2016 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the 'License');
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an 'AS IS' BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from synapse.api.room_versions import RoomVersions
from synapse.events import make_event_from_dict
from synapse.events.utils import (
    copy_power_levels_contents,
    prune_event,
    serialize_event,
)
from synapse.util.frozenutils import freeze

from tests import unittest


def MockEvent(**kwargs):
    if "event_id" not in kwargs:
        kwargs["event_id"] = "fake_event_id"
    if "type" not in kwargs:
        kwargs["type"] = "fake_type"
    return make_event_from_dict(kwargs)


class PruneEventTestCase(unittest.TestCase):
    """ Asserts that a new event constructed with `evdict` will look like
    `matchdict` when it is redacted. """

    def run_test(self, evdict, matchdict, **kwargs):
        self.assertEquals(
            prune_event(make_event_from_dict(evdict, **kwargs)).get_dict(), matchdict
        )

    def test_minimal(self):
        self.run_test(
            {"type": "A", "event_id": "$test:domain"},
            {
                "type": "A",
                "event_id": "$test:domain",
                "content": {},
                "signatures": {},
                "unsigned": {},
            },
        )

    def test_basic_keys(self):
        self.run_test(
            {
                "type": "A",
                "room_id": "!1:domain",
                "sender": "@2:domain",
                "event_id": "$3:domain",
                "origin": "domain",
            },
            {
                "type": "A",
                "room_id": "!1:domain",
                "sender": "@2:domain",
                "event_id": "$3:domain",
                "origin": "domain",
                "content": {},
                "signatures": {},
                "unsigned": {},
            },
        )

    def test_unsigned_age_ts(self):
        self.run_test(
            {"type": "B", "event_id": "$test:domain", "unsigned": {"age_ts": 20}},
            {
                "type": "B",
                "event_id": "$test:domain",
                "content": {},
                "signatures": {},
                "unsigned": {"age_ts": 20},
            },
        )

        self.run_test(
            {
                "type": "B",
                "event_id": "$test:domain",
                "unsigned": {"other_key": "here"},
            },
            {
                "type": "B",
                "event_id": "$test:domain",
                "content": {},
                "signatures": {},
                "unsigned": {},
            },
        )

    def test_content(self):
        self.run_test(
            {"type": "C", "event_id": "$test:domain", "content": {"things": "here"}},
            {
                "type": "C",
                "event_id": "$test:domain",
                "content": {},
                "signatures": {},
                "unsigned": {},
            },
        )

        self.run_test(
            {
                "type": "m.room.create",
                "event_id": "$test:domain",
                "content": {"creator": "@2:domain", "other_field": "here"},
            },
            {
                "type": "m.room.create",
                "event_id": "$test:domain",
                "content": {"creator": "@2:domain"},
                "signatures": {},
                "unsigned": {},
            },
        )

    def test_alias_event(self):
        """Alias events have special behavior up through room version 6."""
        self.run_test(
            {
                "type": "m.room.aliases",
                "event_id": "$test:domain",
                "content": {"aliases": ["test"]},
            },
            {
                "type": "m.room.aliases",
                "event_id": "$test:domain",
                "content": {"aliases": ["test"]},
                "signatures": {},
                "unsigned": {},
            },
        )

    def test_msc2432_alias_event(self):
        """After MSC2432, alias events have no special behavior."""
        self.run_test(
            {"type": "m.room.aliases", "content": {"aliases": ["test"]}},
            {
                "type": "m.room.aliases",
                "content": {},
                "signatures": {},
                "unsigned": {},
            },
            room_version=RoomVersions.MSC2432_DEV,
        )


class SerializeEventTestCase(unittest.TestCase):
    def serialize(self, ev, fields):
        return serialize_event(ev, 1479807801915, only_event_fields=fields)

    def test_event_fields_works_with_keys(self):
        self.assertEquals(
            self.serialize(
                MockEvent(sender="@alice:localhost", room_id="!foo:bar"), ["room_id"]
            ),
            {"room_id": "!foo:bar"},
        )

    def test_event_fields_works_with_nested_keys(self):
        self.assertEquals(
            self.serialize(
                MockEvent(
                    sender="@alice:localhost",
                    room_id="!foo:bar",
                    content={"body": "A message"},
                ),
                ["content.body"],
            ),
            {"content": {"body": "A message"}},
        )

    def test_event_fields_works_with_dot_keys(self):
        self.assertEquals(
            self.serialize(
                MockEvent(
                    sender="@alice:localhost",
                    room_id="!foo:bar",
                    content={"key.with.dots": {}},
                ),
                [r"content.key\.with\.dots"],
            ),
            {"content": {"key.with.dots": {}}},
        )

    def test_event_fields_works_with_nested_dot_keys(self):
        self.assertEquals(
            self.serialize(
                MockEvent(
                    sender="@alice:localhost",
                    room_id="!foo:bar",
                    content={
                        "not_me": 1,
                        "nested.dot.key": {"leaf.key": 42, "not_me_either": 1},
                    },
                ),
                [r"content.nested\.dot\.key.leaf\.key"],
            ),
            {"content": {"nested.dot.key": {"leaf.key": 42}}},
        )

    def test_event_fields_nops_with_unknown_keys(self):
        self.assertEquals(
            self.serialize(
                MockEvent(
                    sender="@alice:localhost",
                    room_id="!foo:bar",
                    content={"foo": "bar"},
                ),
                ["content.foo", "content.notexists"],
            ),
            {"content": {"foo": "bar"}},
        )

    def test_event_fields_nops_with_non_dict_keys(self):
        self.assertEquals(
            self.serialize(
                MockEvent(
                    sender="@alice:localhost",
                    room_id="!foo:bar",
                    content={"foo": ["I", "am", "an", "array"]},
                ),
                ["content.foo.am"],
            ),
            {},
        )

    def test_event_fields_nops_with_array_keys(self):
        self.assertEquals(
            self.serialize(
                MockEvent(
                    sender="@alice:localhost",
                    room_id="!foo:bar",
                    content={"foo": ["I", "am", "an", "array"]},
                ),
                ["content.foo.1"],
            ),
            {},
        )

    def test_event_fields_all_fields_if_empty(self):
        self.assertEquals(
            self.serialize(
                MockEvent(
                    type="foo",
                    event_id="test",
                    room_id="!foo:bar",
                    content={"foo": "bar"},
                ),
                [],
            ),
            {
                "type": "foo",
                "event_id": "test",
                "room_id": "!foo:bar",
                "content": {"foo": "bar"},
                "unsigned": {},
            },
        )

    def test_event_fields_fail_if_fields_not_str(self):
        with self.assertRaises(TypeError):
            self.serialize(
                MockEvent(room_id="!foo:bar", content={"foo": "bar"}), ["room_id", 4]
            )


class CopyPowerLevelsContentTestCase(unittest.TestCase):
    def setUp(self) -> None:
        self.test_content = {
            "ban": 50,
            "events": {"m.room.name": 100, "m.room.power_levels": 100},
            "events_default": 0,
            "invite": 50,
            "kick": 50,
            "notifications": {"room": 20},
            "redact": 50,
            "state_default": 50,
            "users": {"@example:localhost": 100},
            "users_default": 0,
        }

    def _test(self, input):
        a = copy_power_levels_contents(input)

        self.assertEqual(a["ban"], 50)
        self.assertEqual(a["events"]["m.room.name"], 100)

        # make sure that changing the copy changes the copy and not the orig
        a["ban"] = 10
        a["events"]["m.room.power_levels"] = 20

        self.assertEqual(input["ban"], 50)
        self.assertEqual(input["events"]["m.room.power_levels"], 100)

    def test_unfrozen(self):
        self._test(self.test_content)

    def test_frozen(self):
        input = freeze(self.test_content)
        self._test(input)