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synapse/tests/media/test_oembed.py

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# Copyright 2021 The Matrix.org Foundation C.I.C.
#
# 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.
import json
from parameterized import parameterized
from twisted.test.proto_helpers import MemoryReactor
from synapse.media.oembed import OEmbedProvider, OEmbedResult
from synapse.server import HomeServer
from synapse.types import JsonDict
from synapse.util import Clock
from tests.unittest import HomeserverTestCase
try:
import lxml
except ImportError:
lxml = None # type: ignore[assignment]
class OEmbedTests(HomeserverTestCase):
if not lxml:
skip = "url preview feature requires lxml"
def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
self.oembed = OEmbedProvider(hs)
def parse_response(self, response: JsonDict) -> OEmbedResult:
return self.oembed.parse_oembed_response(
"https://test", json.dumps(response).encode("utf-8")
)
def test_version(self) -> None:
"""Accept versions that are similar to 1.0 as a string or int (or missing)."""
for version in ("1.0", 1.0, 1):
result = self.parse_response({"version": version})
# An empty Open Graph response is an error, ensure the URL is included.
self.assertIn("og:url", result.open_graph_result)
# A missing version should be treated as 1.0.
result = self.parse_response({"type": "link"})
self.assertIn("og:url", result.open_graph_result)
# Invalid versions should be rejected.
for version in ("2.0", "1", 1.1, 0, None, {}, []):
result = self.parse_response({"version": version, "type": "link"})
# An empty Open Graph response is an error, ensure the URL is included.
self.assertEqual({}, result.open_graph_result)
def test_cache_age(self) -> None:
"""Ensure a cache-age is parsed properly."""
# Correct-ish cache ages are allowed.
for cache_age in ("1", 1.0, 1):
result = self.parse_response({"cache_age": cache_age})
self.assertEqual(result.cache_age, 1000)
# Invalid cache ages are ignored.
for cache_age in ("invalid", {}):
result = self.parse_response({"cache_age": cache_age})
self.assertIsNone(result.cache_age)
# Cache age is optional.
result = self.parse_response({})
self.assertIsNone(result.cache_age)
@parameterized.expand(
[
("title", "title"),
("provider_name", "site_name"),
("thumbnail_url", "image"),
],
name_func=lambda func, num, p: f"{func.__name__}_{p.args[0]}",
)
def test_property(self, oembed_property: str, open_graph_property: str) -> None:
"""Test properties which must be strings."""
result = self.parse_response({oembed_property: "test"})
self.assertIn(f"og:{open_graph_property}", result.open_graph_result)
self.assertEqual(result.open_graph_result[f"og:{open_graph_property}"], "test")
result = self.parse_response({oembed_property: 1})
self.assertNotIn(f"og:{open_graph_property}", result.open_graph_result)
def test_author_name(self) -> None:
"""Test the author_name property."""
result = self.parse_response({"author_name": "test"})
self.assertEqual(result.author_name, "test")
result = self.parse_response({"author_name": 1})
self.assertIsNone(result.author_name)
def test_rich(self) -> None:
"""Test a type of rich."""
result = self.parse_response({"html": "test<img src='foo'>", "type": "rich"})
self.assertIn("og:description", result.open_graph_result)
self.assertIn("og:image", result.open_graph_result)
self.assertEqual(result.open_graph_result["og:description"], "test")
self.assertEqual(result.open_graph_result["og:image"], "foo")
result = self.parse_response({"type": "rich"})
self.assertNotIn("og:description", result.open_graph_result)
result = self.parse_response({"html": 1, "type": "rich"})
self.assertNotIn("og:description", result.open_graph_result)
def test_photo(self) -> None:
"""Test a type of photo."""
result = self.parse_response({"url": "test", "type": "photo"})
self.assertIn("og:image", result.open_graph_result)
self.assertEqual(result.open_graph_result["og:image"], "test")
result = self.parse_response({"type": "photo"})
self.assertNotIn("og:image", result.open_graph_result)
result = self.parse_response({"url": 1, "type": "photo"})
self.assertNotIn("og:image", result.open_graph_result)
def test_video(self) -> None:
"""Test a type of video."""
result = self.parse_response({"html": "test", "type": "video"})
self.assertIn("og:type", result.open_graph_result)
self.assertEqual(result.open_graph_result["og:type"], "video.other")
self.assertIn("og:description", result.open_graph_result)
self.assertEqual(result.open_graph_result["og:description"], "test")
result = self.parse_response({"type": "video"})
self.assertIn("og:type", result.open_graph_result)
self.assertEqual(result.open_graph_result["og:type"], "video.other")
self.assertNotIn("og:description", result.open_graph_result)
result = self.parse_response({"url": 1, "type": "video"})
self.assertIn("og:type", result.open_graph_result)
self.assertEqual(result.open_graph_result["og:type"], "video.other")
self.assertNotIn("og:description", result.open_graph_result)
def test_link(self) -> None:
"""Test type of link."""
result = self.parse_response({"type": "link"})
self.assertIn("og:type", result.open_graph_result)
self.assertEqual(result.open_graph_result["og:type"], "website")
def test_title_html_entities(self) -> None:
"""Test HTML entities in title"""
result = self.parse_response(
{"title": "Why JSON isn&#8217;t a Good Configuration Language"}
)
self.assertEqual(
result.open_graph_result["og:title"],
"Why JSON isnt a Good Configuration Language",
)