Add some unit tests of prune_events()

tests/events/test_utils.py

+# -*- coding: utf-8 -*-
+# Copyright 2015 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 .. import unittest
+
+from synapse.events import FrozenEvent
+from synapse.events.utils import prune_event
+
+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):
+        self.assertEquals(
+            prune_event(FrozenEvent(evdict)).get_dict(),
+            matchdict
+        )
+
+    def test_minimal(self):
+        self.run_test(
+            {'type': 'A'},
+            {
+                'type': 'A',
+                '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',
+                'unsigned': {'age_ts': 20},
+            },
+            {
+                'type': 'B',
+                'content': {},
+                'signatures': {},
+                'unsigned': {'age_ts': 20},
+            }
+        )
+
+        self.run_test(
+            {
+                'type': 'B',
+                'unsigned': {'other_key': 'here'},
+            },
+            {
+                'type': 'B',
+                'content': {},
+                'signatures': {},
+                'unsigned': {},
+            }
+        )
+
+    def test_content(self):
+        self.run_test(
+            {
+                'type': 'C',
+                'content': {'things': 'here'},
+            },
+            {
+                'type': 'C',
+                'content': {},
+                'signatures': {},
+                'unsigned': {},
+            }
+        )
+
+        self.run_test(
+            {
+                'type': 'm.room.create',
+                'content': {'creator': '@2:domain', 'other_field': 'here'},
+            },
+            {
+                'type': 'm.room.create',
+                'content': {'creator': '@2:domain'},
+                'signatures': {},
+                'unsigned': {},
+            }
+        )