Sliding sync: Correctly track which read receipts we have or have not sent down. (#17575)

Add connection tracking to the receipts extension.

Based on #17574

---------

Co-authored-by: Eric Eastwood <eric.eastwood@beta.gouv.fr>

1 files changed, 13 insertions, 1 deletions

diff --git a/tests/rest/client/utils.py b/tests/rest/client/utils.py

index e43140720d..9614cdd66a 100644
--- a/tests/rest/client/utils.py
+++ b/tests/rest/client/utils.py
@@ -45,7 +45,7 @@ from typing_extensions import Literal
 from twisted.test.proto_helpers import MemoryReactorClock
 from twisted.web.server import Site
 
-from synapse.api.constants import Membership
+from synapse.api.constants import Membership, ReceiptTypes
 from synapse.api.errors import Codes
 from synapse.server import HomeServer
 from synapse.types import JsonDict
@@ -944,3 +944,15 @@ class RestHelper:
         assert len(p.links) == 1, "not exactly one link in confirmation page"
         oauth_uri = p.links[0]
         return oauth_uri
+
+    def send_read_receipt(self, room_id: str, event_id: str, *, tok: str) -> None:
+        """Send a read receipt into the room at the given event"""
+        channel = make_request(
+            self.reactor,
+            self.site,
+            method="POST",
+            path=f"/rooms/{room_id}/receipt/{ReceiptTypes.READ}/{event_id}",
+            content={},
+            access_token=tok,
+        )
+        assert channel.code == HTTPStatus.OK, channel.text_body