diff --git a/tests/api/test_filtering.py b/tests/api/test_filtering.py
index 48b2d3d663..2a7044801a 100644
--- a/tests/api/test_filtering.py
+++ b/tests/api/test_filtering.py
@@ -60,7 +60,7 @@ class FilteringTestCase(unittest.TestCase):
invalid_filters = [
{"boom": {}},
{"account_data": "Hello World"},
- {"event_fields": ["\\foo"]},
+ {"event_fields": [r"\\foo"]},
{"room": {"timeline": {"limit": 0}, "state": {"not_bars": ["*"]}}},
{"event_format": "other"},
{"room": {"not_rooms": ["#foo:pik-test"]}},
@@ -109,6 +109,16 @@ class FilteringTestCase(unittest.TestCase):
"event_format": "client",
"event_fields": ["type", "content", "sender"],
},
+
+ # a single backslash should be permitted (though it is debatable whether
+ # it should be permitted before anything other than `.`, and what that
+ # actually means)
+ #
+ # (note that event_fields is implemented in
+ # synapse.events.utils.serialize_event, and so whether this actually works
+ # is tested elsewhere. We just want to check that it is allowed through the
+ # filter validation)
+ {"event_fields": [r"foo\.bar"]},
]
for filter in valid_filters:
try:
|
