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-rw-r--r--tests/events/test_utils.py185
1 files changed, 164 insertions, 21 deletions
diff --git a/tests/events/test_utils.py b/tests/events/test_utils.py
index c1274c14af..8ba36c6074 100644
--- a/tests/events/test_utils.py
+++ b/tests/events/test_utils.py
@@ -34,11 +34,17 @@ def MockEvent(**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(
+        """
+        Asserts that a new event constructed with `evdict` will look like
+        `matchdict` when it is redacted.
+
+        Args:
+             evdict: The dictionary to build the event from.
+             matchdict: The expected resulting dictionary.
+             kwargs: Additional keyword arguments used to create the event.
+        """
+        self.assertEqual(
             prune_event(make_event_from_dict(evdict, **kwargs)).get_dict(), matchdict
         )
 
@@ -55,54 +61,80 @@ class PruneEventTestCase(unittest.TestCase):
         )
 
     def test_basic_keys(self):
+        """Ensure that the keys that should be untouched are kept."""
+        # Note that some of the values below don't really make sense, but the
+        # pruning of events doesn't worry about the values of any fields (with
+        # the exception of the content field).
         self.run_test(
             {
+                "event_id": "$3:domain",
                 "type": "A",
                 "room_id": "!1:domain",
                 "sender": "@2:domain",
-                "event_id": "$3:domain",
+                "state_key": "B",
+                "content": {"other_key": "foo"},
+                "hashes": "hashes",
+                "signatures": {"domain": {"algo:1": "sigs"}},
+                "depth": 4,
+                "prev_events": "prev_events",
+                "prev_state": "prev_state",
+                "auth_events": "auth_events",
                 "origin": "domain",
+                "origin_server_ts": 1234,
+                "membership": "join",
+                # Also include a key that should be removed.
+                "other_key": "foo",
             },
             {
+                "event_id": "$3:domain",
                 "type": "A",
                 "room_id": "!1:domain",
                 "sender": "@2:domain",
-                "event_id": "$3:domain",
+                "state_key": "B",
+                "hashes": "hashes",
+                "depth": 4,
+                "prev_events": "prev_events",
+                "prev_state": "prev_state",
+                "auth_events": "auth_events",
                 "origin": "domain",
+                "origin_server_ts": 1234,
+                "membership": "join",
                 "content": {},
-                "signatures": {},
+                "signatures": {"domain": {"algo:1": "sigs"}},
                 "unsigned": {},
             },
         )
 
-    def test_unsigned_age_ts(self):
+        # As of MSC2176 we now redact the membership and prev_states keys.
         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},
-            },
+            {"type": "A", "prev_state": "prev_state", "membership": "join"},
+            {"type": "A", "content": {}, "signatures": {}, "unsigned": {}},
+            room_version=RoomVersions.MSC2176,
         )
 
+    def test_unsigned(self):
+        """Ensure that unsigned properties get stripped (except age_ts and replaces_state)."""
         self.run_test(
             {
                 "type": "B",
                 "event_id": "$test:domain",
-                "unsigned": {"other_key": "here"},
+                "unsigned": {
+                    "age_ts": 20,
+                    "replaces_state": "$test2:domain",
+                    "other_key": "foo",
+                },
             },
             {
                 "type": "B",
                 "event_id": "$test:domain",
                 "content": {},
                 "signatures": {},
-                "unsigned": {},
+                "unsigned": {"age_ts": 20, "replaces_state": "$test2:domain"},
             },
         )
 
     def test_content(self):
+        """The content dictionary should be stripped in most cases."""
         self.run_test(
             {"type": "C", "event_id": "$test:domain", "content": {"things": "here"}},
             {
@@ -114,11 +146,35 @@ class PruneEventTestCase(unittest.TestCase):
             },
         )
 
+        # Some events keep a single content key/value.
+        EVENT_KEEP_CONTENT_KEYS = [
+            ("member", "membership", "join"),
+            ("join_rules", "join_rule", "invite"),
+            ("history_visibility", "history_visibility", "shared"),
+        ]
+        for event_type, key, value in EVENT_KEEP_CONTENT_KEYS:
+            self.run_test(
+                {
+                    "type": "m.room." + event_type,
+                    "event_id": "$test:domain",
+                    "content": {key: value, "other_key": "foo"},
+                },
+                {
+                    "type": "m.room." + event_type,
+                    "event_id": "$test:domain",
+                    "content": {key: value},
+                    "signatures": {},
+                    "unsigned": {},
+                },
+            )
+
+    def test_create(self):
+        """Create events are partially redacted until MSC2176."""
         self.run_test(
             {
                 "type": "m.room.create",
                 "event_id": "$test:domain",
-                "content": {"creator": "@2:domain", "other_field": "here"},
+                "content": {"creator": "@2:domain", "other_key": "foo"},
             },
             {
                 "type": "m.room.create",
@@ -129,6 +185,68 @@ class PruneEventTestCase(unittest.TestCase):
             },
         )
 
+        # After MSC2176, create events get nothing redacted.
+        self.run_test(
+            {"type": "m.room.create", "content": {"not_a_real_key": True}},
+            {
+                "type": "m.room.create",
+                "content": {"not_a_real_key": True},
+                "signatures": {},
+                "unsigned": {},
+            },
+            room_version=RoomVersions.MSC2176,
+        )
+
+    def test_power_levels(self):
+        """Power level events keep a variety of content keys."""
+        self.run_test(
+            {
+                "type": "m.room.power_levels",
+                "event_id": "$test:domain",
+                "content": {
+                    "ban": 1,
+                    "events": {"m.room.name": 100},
+                    "events_default": 2,
+                    "invite": 3,
+                    "kick": 4,
+                    "redact": 5,
+                    "state_default": 6,
+                    "users": {"@admin:domain": 100},
+                    "users_default": 7,
+                    "other_key": 8,
+                },
+            },
+            {
+                "type": "m.room.power_levels",
+                "event_id": "$test:domain",
+                "content": {
+                    "ban": 1,
+                    "events": {"m.room.name": 100},
+                    "events_default": 2,
+                    # Note that invite is not here.
+                    "kick": 4,
+                    "redact": 5,
+                    "state_default": 6,
+                    "users": {"@admin:domain": 100},
+                    "users_default": 7,
+                },
+                "signatures": {},
+                "unsigned": {},
+            },
+        )
+
+        # After MSC2176, power levels events keep the invite key.
+        self.run_test(
+            {"type": "m.room.power_levels", "content": {"invite": 75}},
+            {
+                "type": "m.room.power_levels",
+                "content": {"invite": 75},
+                "signatures": {},
+                "unsigned": {},
+            },
+            room_version=RoomVersions.MSC2176,
+        )
+
     def test_alias_event(self):
         """Alias events have special behavior up through room version 6."""
         self.run_test(
@@ -146,8 +264,7 @@ class PruneEventTestCase(unittest.TestCase):
             },
         )
 
-    def test_msc2432_alias_event(self):
-        """After MSC2432, alias events have no special behavior."""
+        # After MSC2432, alias events have no special behavior.
         self.run_test(
             {"type": "m.room.aliases", "content": {"aliases": ["test"]}},
             {
@@ -159,6 +276,32 @@ class PruneEventTestCase(unittest.TestCase):
             room_version=RoomVersions.V6,
         )
 
+    def test_redacts(self):
+        """Redaction events have no special behaviour until MSC2174/MSC2176."""
+
+        self.run_test(
+            {"type": "m.room.redaction", "content": {"redacts": "$test2:domain"}},
+            {
+                "type": "m.room.redaction",
+                "content": {},
+                "signatures": {},
+                "unsigned": {},
+            },
+            room_version=RoomVersions.V6,
+        )
+
+        # After MSC2174, redaction events keep the redacts content key.
+        self.run_test(
+            {"type": "m.room.redaction", "content": {"redacts": "$test2:domain"}},
+            {
+                "type": "m.room.redaction",
+                "content": {"redacts": "$test2:domain"},
+                "signatures": {},
+                "unsigned": {},
+            },
+            room_version=RoomVersions.MSC2176,
+        )
+
 
 class SerializeEventTestCase(unittest.TestCase):
     def serialize(self, ev, fields):