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-rw-r--r--tests/handlers/test_receipts.py294
-rw-r--r--tests/rest/client/v2_alpha/test_sync.py97
2 files changed, 389 insertions, 2 deletions
diff --git a/tests/handlers/test_receipts.py b/tests/handlers/test_receipts.py
new file mode 100644
index 0000000000..93a9a084b2
--- /dev/null
+++ b/tests/handlers/test_receipts.py
@@ -0,0 +1,294 @@
+# Copyright 2021 Šimon Brandner <simon.bra.ag@gmail.com>
+#
+# 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 typing import List
+
+from synapse.api.constants import ReadReceiptEventFields
+from synapse.types import JsonDict
+
+from tests import unittest
+
+
+class ReceiptsTestCase(unittest.HomeserverTestCase):
+    def prepare(self, reactor, clock, hs):
+        self.event_source = hs.get_event_sources().sources["receipt"]
+
+    # In the first param of _test_filters_hidden we use "hidden" instead of
+    # ReadReceiptEventFields.MSC2285_HIDDEN. We do this because we're mocking
+    # the data from the database which doesn't use the prefix
+
+    def test_filters_out_hidden_receipt(self):
+        self._test_filters_hidden(
+            [
+                {
+                    "content": {
+                        "$1435641916114394fHBLK:matrix.org": {
+                            "m.read": {
+                                "@rikj:jki.re": {
+                                    "ts": 1436451550453,
+                                    "hidden": True,
+                                }
+                            }
+                        }
+                    },
+                    "room_id": "!jEsUZKDJdhlrceRyVU:example.org",
+                    "type": "m.receipt",
+                }
+            ],
+            [],
+        )
+
+    def test_does_not_filter_out_our_hidden_receipt(self):
+        self._test_filters_hidden(
+            [
+                {
+                    "content": {
+                        "$1435641916hfgh4394fHBLK:matrix.org": {
+                            "m.read": {
+                                "@me:server.org": {
+                                    "ts": 1436451550453,
+                                    "hidden": True,
+                                },
+                            }
+                        }
+                    },
+                    "room_id": "!jEsUZKDJdhlrceRyVU:example.org",
+                    "type": "m.receipt",
+                }
+            ],
+            [
+                {
+                    "content": {
+                        "$1435641916hfgh4394fHBLK:matrix.org": {
+                            "m.read": {
+                                "@me:server.org": {
+                                    "ts": 1436451550453,
+                                    ReadReceiptEventFields.MSC2285_HIDDEN: True,
+                                },
+                            }
+                        }
+                    },
+                    "room_id": "!jEsUZKDJdhlrceRyVU:example.org",
+                    "type": "m.receipt",
+                }
+            ],
+        )
+
+    def test_filters_out_hidden_receipt_and_ignores_rest(self):
+        self._test_filters_hidden(
+            [
+                {
+                    "content": {
+                        "$1dgdgrd5641916114394fHBLK:matrix.org": {
+                            "m.read": {
+                                "@rikj:jki.re": {
+                                    "ts": 1436451550453,
+                                    "hidden": True,
+                                },
+                                "@user:jki.re": {
+                                    "ts": 1436451550453,
+                                },
+                            }
+                        }
+                    },
+                    "room_id": "!jEsUZKDJdhlrceRyVU:example.org",
+                    "type": "m.receipt",
+                }
+            ],
+            [
+                {
+                    "content": {
+                        "$1dgdgrd5641916114394fHBLK:matrix.org": {
+                            "m.read": {
+                                "@user:jki.re": {
+                                    "ts": 1436451550453,
+                                }
+                            }
+                        }
+                    },
+                    "room_id": "!jEsUZKDJdhlrceRyVU:example.org",
+                    "type": "m.receipt",
+                }
+            ],
+        )
+
+    def test_filters_out_event_with_only_hidden_receipts_and_ignores_the_rest(self):
+        self._test_filters_hidden(
+            [
+                {
+                    "content": {
+                        "$14356419edgd14394fHBLK:matrix.org": {
+                            "m.read": {
+                                "@rikj:jki.re": {
+                                    "ts": 1436451550453,
+                                    "hidden": True,
+                                },
+                            }
+                        },
+                        "$1435641916114394fHBLK:matrix.org": {
+                            "m.read": {
+                                "@user:jki.re": {
+                                    "ts": 1436451550453,
+                                }
+                            }
+                        },
+                    },
+                    "room_id": "!jEsUZKDJdhlrceRyVU:example.org",
+                    "type": "m.receipt",
+                }
+            ],
+            [
+                {
+                    "content": {
+                        "$1435641916114394fHBLK:matrix.org": {
+                            "m.read": {
+                                "@user:jki.re": {
+                                    "ts": 1436451550453,
+                                }
+                            }
+                        }
+                    },
+                    "room_id": "!jEsUZKDJdhlrceRyVU:example.org",
+                    "type": "m.receipt",
+                }
+            ],
+        )
+
+    def test_handles_missing_content_of_m_read(self):
+        self._test_filters_hidden(
+            [
+                {
+                    "content": {
+                        "$14356419ggffg114394fHBLK:matrix.org": {"m.read": {}},
+                        "$1435641916114394fHBLK:matrix.org": {
+                            "m.read": {
+                                "@user:jki.re": {
+                                    "ts": 1436451550453,
+                                }
+                            }
+                        },
+                    },
+                    "room_id": "!jEsUZKDJdhlrceRyVU:example.org",
+                    "type": "m.receipt",
+                }
+            ],
+            [
+                {
+                    "content": {
+                        "$14356419ggffg114394fHBLK:matrix.org": {"m.read": {}},
+                        "$1435641916114394fHBLK:matrix.org": {
+                            "m.read": {
+                                "@user:jki.re": {
+                                    "ts": 1436451550453,
+                                }
+                            }
+                        },
+                    },
+                    "room_id": "!jEsUZKDJdhlrceRyVU:example.org",
+                    "type": "m.receipt",
+                }
+            ],
+        )
+
+    def test_handles_empty_event(self):
+        self._test_filters_hidden(
+            [
+                {
+                    "content": {
+                        "$143564gdfg6114394fHBLK:matrix.org": {},
+                        "$1435641916114394fHBLK:matrix.org": {
+                            "m.read": {
+                                "@user:jki.re": {
+                                    "ts": 1436451550453,
+                                }
+                            }
+                        },
+                    },
+                    "room_id": "!jEsUZKDJdhlrceRyVU:example.org",
+                    "type": "m.receipt",
+                }
+            ],
+            [
+                {
+                    "content": {
+                        "$143564gdfg6114394fHBLK:matrix.org": {},
+                        "$1435641916114394fHBLK:matrix.org": {
+                            "m.read": {
+                                "@user:jki.re": {
+                                    "ts": 1436451550453,
+                                }
+                            }
+                        },
+                    },
+                    "room_id": "!jEsUZKDJdhlrceRyVU:example.org",
+                    "type": "m.receipt",
+                }
+            ],
+        )
+
+    def test_filters_out_receipt_event_with_only_hidden_receipt_and_ignores_rest(self):
+        self._test_filters_hidden(
+            [
+                {
+                    "content": {
+                        "$14356419edgd14394fHBLK:matrix.org": {
+                            "m.read": {
+                                "@rikj:jki.re": {
+                                    "ts": 1436451550453,
+                                    "hidden": True,
+                                },
+                            }
+                        },
+                    },
+                    "room_id": "!jEsUZKDJdhlrceRyVU:example.org",
+                    "type": "m.receipt",
+                },
+                {
+                    "content": {
+                        "$1435641916114394fHBLK:matrix.org": {
+                            "m.read": {
+                                "@user:jki.re": {
+                                    "ts": 1436451550453,
+                                }
+                            }
+                        },
+                    },
+                    "room_id": "!jEsUZKDJdhlrceRyVU:example.org",
+                    "type": "m.receipt",
+                },
+            ],
+            [
+                {
+                    "content": {
+                        "$1435641916114394fHBLK:matrix.org": {
+                            "m.read": {
+                                "@user:jki.re": {
+                                    "ts": 1436451550453,
+                                }
+                            }
+                        }
+                    },
+                    "room_id": "!jEsUZKDJdhlrceRyVU:example.org",
+                    "type": "m.receipt",
+                }
+            ],
+        )
+
+    def _test_filters_hidden(
+        self, events: List[JsonDict], expected_output: List[JsonDict]
+    ):
+        """Tests that the _filter_out_hidden returns the expected output"""
+        filtered_events = self.event_source.filter_out_hidden(events, "@me:server.org")
+        self.assertEquals(filtered_events, expected_output)
diff --git a/tests/rest/client/v2_alpha/test_sync.py b/tests/rest/client/v2_alpha/test_sync.py
index cdca3a3e23..f6ae9ae181 100644
--- a/tests/rest/client/v2_alpha/test_sync.py
+++ b/tests/rest/client/v2_alpha/test_sync.py
@@ -15,9 +15,14 @@
 import json
 
 import synapse.rest.admin
-from synapse.api.constants import EventContentFields, EventTypes, RelationTypes
+from synapse.api.constants import (
+    EventContentFields,
+    EventTypes,
+    ReadReceiptEventFields,
+    RelationTypes,
+)
 from synapse.rest.client.v1 import login, room
-from synapse.rest.client.v2_alpha import knock, read_marker, sync
+from synapse.rest.client.v2_alpha import knock, read_marker, receipts, sync
 
 from tests import unittest
 from tests.federation.transport.test_knocking import (
@@ -368,6 +373,76 @@ class SyncKnockTestCase(
         )
 
 
+class ReadReceiptsTestCase(unittest.HomeserverTestCase):
+    servlets = [
+        synapse.rest.admin.register_servlets,
+        login.register_servlets,
+        receipts.register_servlets,
+        room.register_servlets,
+        sync.register_servlets,
+    ]
+
+    def prepare(self, reactor, clock, hs):
+        self.url = "/sync?since=%s"
+        self.next_batch = "s0"
+
+        # Register the first user
+        self.user_id = self.register_user("kermit", "monkey")
+        self.tok = self.login("kermit", "monkey")
+
+        # Create the room
+        self.room_id = self.helper.create_room_as(self.user_id, tok=self.tok)
+
+        # Register the second user
+        self.user2 = self.register_user("kermit2", "monkey")
+        self.tok2 = self.login("kermit2", "monkey")
+
+        # Join the second user
+        self.helper.join(room=self.room_id, user=self.user2, tok=self.tok2)
+
+    @override_config({"experimental_features": {"msc2285_enabled": True}})
+    def test_hidden_read_receipts(self):
+        # Send a message as the first user
+        res = self.helper.send(self.room_id, body="hello", tok=self.tok)
+
+        # Send a read receipt to tell the server the first user's message was read
+        body = json.dumps({ReadReceiptEventFields.MSC2285_HIDDEN: True}).encode("utf8")
+        channel = self.make_request(
+            "POST",
+            "/rooms/%s/receipt/m.read/%s" % (self.room_id, res["event_id"]),
+            body,
+            access_token=self.tok2,
+        )
+        self.assertEqual(channel.code, 200)
+
+        # Test that the first user can't see the other user's hidden read receipt
+        self.assertEqual(self._get_read_receipt(), None)
+
+    def _get_read_receipt(self):
+        """Syncs and returns the read receipt."""
+
+        # Checks if event is a read receipt
+        def is_read_receipt(event):
+            return event["type"] == "m.receipt"
+
+        # Sync
+        channel = self.make_request(
+            "GET",
+            self.url % self.next_batch,
+            access_token=self.tok,
+        )
+        self.assertEqual(channel.code, 200)
+
+        # Store the next batch for the next request.
+        self.next_batch = channel.json_body["next_batch"]
+
+        # Return the read receipt
+        ephemeral_events = channel.json_body["rooms"]["join"][self.room_id][
+            "ephemeral"
+        ]["events"]
+        return next(filter(is_read_receipt, ephemeral_events), None)
+
+
 class UnreadMessagesTestCase(unittest.HomeserverTestCase):
     servlets = [
         synapse.rest.admin.register_servlets,
@@ -375,6 +450,7 @@ class UnreadMessagesTestCase(unittest.HomeserverTestCase):
         read_marker.register_servlets,
         room.register_servlets,
         sync.register_servlets,
+        receipts.register_servlets,
     ]
 
     def prepare(self, reactor, clock, hs):
@@ -448,6 +524,23 @@ class UnreadMessagesTestCase(unittest.HomeserverTestCase):
         # Check that the unread counter is back to 0.
         self._check_unread_count(0)
 
+        # Check that hidden read receipts don't break unread counts
+        res = self.helper.send(self.room_id, "hello", tok=self.tok2)
+        self._check_unread_count(1)
+
+        # Send a read receipt to tell the server we've read the latest event.
+        body = json.dumps({ReadReceiptEventFields.MSC2285_HIDDEN: True}).encode("utf8")
+        channel = self.make_request(
+            "POST",
+            "/rooms/%s/receipt/m.read/%s" % (self.room_id, res["event_id"]),
+            body,
+            access_token=self.tok,
+        )
+        self.assertEqual(channel.code, 200, channel.json_body)
+
+        # Check that the unread counter is back to 0.
+        self._check_unread_count(0)
+
         # Check that room name changes increase the unread counter.
         self.helper.send_state(
             self.room_id,