tests: add some sliding sync tests for thread subscriptions and catchup

crates/matrix-sdk/src/sliding_sync/mod.rs

@@ -659,15 +659,19 @@ impl SlidingSync {
             || !self.inner.lists.read().await.is_empty()
     }
 
+    /// Send a single sliding sync request, and returns the response summary.
+    ///
+    /// Public for testing purposes only.
+    #[doc(hidden)]
     #[instrument(skip_all, fields(pos, conn_id = self.inner.id))]
-    async fn sync_once(&self) -> Result<UpdateSummary> {
+    pub async fn sync_once(&self) -> Result<UpdateSummary> {
         let (request, request_config, position_guard) =
             self.generate_sync_request(&mut LazyTransactionId::new()).await?;
 
-        // Send the request, kaboom.
+        // Send the request.
         let summaries = self.send_sync_request(request, request_config, position_guard).await?;
 
-        // Notify a new sync was received
+        // Notify a new sync was received.
         self.inner.client.inner.sync_beat.notify(usize::MAX);
 
         Ok(summaries)

crates/matrix-sdk/src/test_utils/mocks/mod.rs

@@ -33,6 +33,7 @@ use ruma::{
     api::client::{
         receipt::create_receipt::v3::ReceiptType,
         room::Visibility,
+        sync::sync_events::v5,
         threads::get_thread_subscriptions_changes::unstable::{
             ThreadSubscription, ThreadUnsubscription,
         },
@@ -68,7 +69,7 @@ pub mod encryption;
 pub mod oauth;
 
 use super::client::MockClientBuilder;
-use crate::{room::IncludeRelations, Client, OwnedServerName, Room};
+use crate::{room::IncludeRelations, Client, OwnedServerName, Room, SlidingSyncBuilder};
 
 /// Structure used to store the crypto keys uploaded to the server.
 /// They will be served back to clients when requested.
@@ -353,6 +354,13 @@ impl MatrixMockServer {
         )
     }
 
+    /// Mocks the sliding sync endpoint.
+    pub fn mock_sliding_sync(&self) -> MockEndpoint<'_, SlidingSyncEndpoint> {
+        let mock = Mock::given(method("POST"))
+            .and(path("/_matrix/client/unstable/org.matrix.simplified_msc3575/sync"));
+        self.mock_endpoint(mock, SlidingSyncEndpoint)
+    }
+
     /// Creates a prebuilt mock for joining a room.
     ///
     /// # Examples
@@ -4172,6 +4180,8 @@ pub struct GetThreadSubscriptionsEndpoint {
     subscribed: BTreeMap<OwnedRoomId, BTreeMap<OwnedEventId, ThreadSubscription>>,
     /// New thread unsubscriptions per (room id, thread root event id).
     unsubscribed: BTreeMap<OwnedRoomId, BTreeMap<OwnedEventId, ThreadUnsubscription>>,
+    /// Optional delay to respond to the query.
+    delay: Option<Duration>,
 }
 
 impl<'a> MockEndpoint<'a, GetThreadSubscriptionsEndpoint> {
@@ -4197,6 +4207,12 @@ impl<'a> MockEndpoint<'a, GetThreadSubscriptionsEndpoint> {
         self
     }
 
+    /// Respond with a given delay to the query.
+    pub fn with_delay(mut self, delay: Duration) -> Self {
+        self.endpoint.delay = Some(delay);
+        self
+    }
+
     /// Match the `from` query parameter to a given value.
     pub fn match_from(self, from: &str) -> Self {
         Self { mock: self.mock.and(query_param("from", from)), ..self }
@@ -4214,7 +4230,14 @@ impl<'a> MockEndpoint<'a, GetThreadSubscriptionsEndpoint> {
             "unsubscribed": self.endpoint.unsubscribed,
             "end": end,
         });
-        self.respond_with(ResponseTemplate::new(200).set_body_json(response_body))
+
+        let mut template = ResponseTemplate::new(200).set_body_json(response_body);
+
+        if let Some(delay) = self.endpoint.delay {
+            template = template.set_delay(delay);
+        }
+
+        self.respond_with(template)
     }
 }
 
@@ -4280,3 +4303,39 @@ impl<'a> MockEndpoint<'a, GetHierarchyEndpoint> {
         })))
     }
 }
+
+/// A prebuilt mock for running simplified sliding sync.
+pub struct SlidingSyncEndpoint;
+
+impl<'a> MockEndpoint<'a, SlidingSyncEndpoint> {
+    /// Mocks the sliding sync endpoint with the given response.
+    pub fn ok(self, response: v5::Response) -> MatrixMock<'a> {
+        // A bit silly that we need to destructure all the fields ourselves, but
+        // Response isn't serializable :'(
+        self.respond_with(ResponseTemplate::new(200).set_body_json(json!({
+            "txn_id": response.txn_id,
+            "pos": response.pos,
+            "lists": response.lists,
+            "rooms": response.rooms,
+            "extensions": response.extensions,
+        })))
+    }
+
+    /// Temporarily mocks the sync with the given endpoint and runs a client
+    /// sync with it.
+    ///
+    /// After calling this function, the sync endpoint isn't mocked anymore.
+    pub async fn ok_and_run<F: FnOnce(SlidingSyncBuilder) -> SlidingSyncBuilder>(
+        self,
+        client: &Client,
+        on_builder: F,
+        response: v5::Response,
+    ) {
+        let _scope = self.ok(response).mount_as_scoped().await;
+
+        let sliding_sync =
+            on_builder(client.sliding_sync("test_id").unwrap()).build().await.unwrap();
+
+        let _summary = sliding_sync.sync_once().await.unwrap();
+    }
+}

crates/matrix-sdk/tests/integration/client.rs

@@ -6,12 +6,13 @@ use futures_util::FutureExt;
 use matrix_sdk::{
     authentication::oauth::{error::OAuthTokenRevocationError, OAuthError},
     config::{RequestConfig, StoreConfig, SyncSettings, SyncToken},
-    store::RoomLoadSettings,
+    sleep::sleep,
+    store::{RoomLoadSettings, ThreadSubscriptionStatus},
     sync::{RoomUpdate, State},
     test_utils::{
         client::mock_matrix_session, mocks::MatrixMockServer, no_retry_test_client_with_server,
     },
-    Client, Error, MemoryStore, StateChanges, StateStore,
+    Client, Error, MemoryStore, SlidingSyncList, StateChanges, StateStore, ThreadingSupport,
 };
 use matrix_sdk_base::{sync::RoomUpdates, RoomState};
 use matrix_sdk_common::executor::spawn;
@@ -36,6 +37,7 @@ use ruma::{
             get_public_rooms,
             get_public_rooms_filtered::{self, v3::Request as PublicRoomsFilterRequest},
         },
+        sync::sync_events::v5,
         threads::get_thread_subscriptions_changes::unstable::{
             ThreadSubscription, ThreadUnsubscription,
         },
@@ -56,7 +58,7 @@ use ruma::{
     room::JoinRule,
     room_id,
     serde::Raw,
-    uint, user_id, OwnedUserId,
+    uint, user_id, EventId, OwnedUserId, RoomId,
 };
 use serde_json::{json, Value as JsonValue};
 use stream_assert::{assert_next_matches, assert_pending};
@@ -1587,3 +1589,211 @@ async fn test_fetch_thread_subscriptions() {
     let u = &response.unsubscribed[&room3][&thread3];
     assert_eq!(u.bump_stamp, uint!(13));
 }
+
+/// Create a sliding sync thread_subscription response with no `prev_batch`
+/// token.
+fn thread_subscription_response(
+    room1: &RoomId,
+    thread1: &EventId,
+    room2: &RoomId,
+    thread2: &EventId,
+) -> v5::response::ThreadSubscriptions {
+    assign!(v5::response::ThreadSubscriptions::default(), {
+        subscribed: {
+            let mut map = BTreeMap::new();
+            map.insert(room1.to_owned(), {
+                let mut threads = BTreeMap::new();
+                threads.insert(thread1.to_owned(), ThreadSubscription::new(true, uint!(42)));
+                threads
+            });
+            map
+        },
+        unsubscribed: {
+            let mut map = BTreeMap::new();
+            map.insert(room2.to_owned(), {
+                let mut threads = BTreeMap::new();
+                threads.insert(thread2.to_owned(), ThreadUnsubscription::new(uint!(7)));
+                threads
+            });
+            map
+        },
+        prev_batch: None,
+    })
+}
+
+#[async_test]
+async fn test_sync_thread_subscriptions() {
+    let server = MatrixMockServer::new().await;
+    let client = server.client_builder().build().await;
+
+    let room1 = owned_room_id!("!room1:example.com");
+    let room2 = owned_room_id!("!room2:example.com");
+
+    let thread1 = owned_event_id!("$thread1:example.com");
+    let thread2 = owned_event_id!("$thread2:example.com");
+
+    // At first, there are no thread subscriptions at all.
+    let stored1 = client
+        .state_store()
+        .load_thread_subscription(&room1, &thread1)
+        .await
+        .expect("loading room1/thread1 works fine");
+    assert_matches!(stored1, None);
+
+    let stored2 = client
+        .state_store()
+        .load_thread_subscription(&room2, &thread2)
+        .await
+        .expect("loading room2/thread2 works fine");
+    assert_matches!(stored2, None);
+
+    // When I sliding-sync thread subscriptions,
+    server
+        .mock_sliding_sync()
+        .ok_and_run(
+            &client,
+            |config_builder| {
+                config_builder.with_thread_subscriptions_extension(
+                    assign!(v5::request::ThreadSubscriptions::default(), {
+                        enabled: Some(true),
+                        limit: Some(uint!(10)),
+                    }),
+                )
+            },
+            assign!(v5::Response::new("pos".to_owned()), {
+                extensions: assign!(v5::response::Extensions::default(), {
+                    thread_subscriptions: thread_subscription_response(
+                        &room1, &thread1, &room2, &thread2,
+                    ),
+                }),
+            }),
+        )
+        .await;
+
+    // Then they're stored in the local database.
+    let stored1 = client
+        .state_store()
+        .load_thread_subscription(&room1, &thread1)
+        .await
+        .expect("loading room1/thread1 works fine")
+        .expect("found room1/thread1 subscription");
+
+    assert_eq!(stored1.status, ThreadSubscriptionStatus::Subscribed { automatic: true });
+    assert_eq!(stored1.bump_stamp, Some(42));
+
+    let stored2 = client
+        .state_store()
+        .load_thread_subscription(&room2, &thread2)
+        .await
+        .expect("loading room2/thread2 works fine")
+        .expect("found room2/thread2 unsubscription");
+
+    assert_eq!(stored2.status, ThreadSubscriptionStatus::Unsubscribed);
+    assert_eq!(stored2.bump_stamp, Some(7));
+}
+
+#[async_test]
+async fn test_sync_thread_subscriptions_with_catchup() {
+    let server = MatrixMockServer::new().await;
+    let client = server
+        .client_builder()
+        .on_builder(|builder| {
+            builder.with_threading_support(ThreadingSupport::Enabled { with_subscriptions: true })
+        })
+        .build()
+        .await;
+
+    let room_id1 = owned_room_id!("!room1:example.com");
+    let room_id2 = owned_room_id!("!room2:example.com");
+
+    let thread1 = owned_event_id!("$thread1:example.com");
+    let thread2 = owned_event_id!("$thread2:example.com");
+    let thread3 = owned_event_id!("$thread3:example.com");
+
+    // The provided catchup token will be used to fetch more thread
+    // subscriptions via the msc4308 companion endpoint.
+    server
+        .mock_get_thread_subscriptions()
+        .match_from("catchup_token")
+        .add_subscription(
+            room_id1.clone(),
+            thread3.clone(),
+            ThreadSubscription::new(false, uint!(1337)),
+        )
+        .with_delay(Duration::from_millis(300)) // Simulate some network delay.
+        // No more subscriptions after the first catchup request.
+        .ok(None)
+        .mock_once()
+        .mount()
+        .await;
+
+    // When I sliding-sync thread subscriptions, and the response includes this
+    // catch-up token,
+    let mut thread_subscriptions =
+        thread_subscription_response(&room_id1, &thread1, &room_id2, &thread2);
+    thread_subscriptions.prev_batch = Some("catchup_token".to_owned());
+
+    server
+        .mock_sliding_sync()
+        .ok_and_run(
+            &client,
+            |config_builder| {
+                config_builder
+                    .with_thread_subscriptions_extension(
+                        assign!(v5::request::ThreadSubscriptions::default(), {
+                            enabled: Some(true),
+                            limit: Some(uint!(10)),
+                        }),
+                    )
+                    .add_list(SlidingSyncList::builder("rooms"))
+            },
+            assign!(v5::Response::new("pos".to_owned()), {
+                rooms: {
+                    let mut rooms = BTreeMap::new();
+                    rooms.insert(room_id1.clone(), v5::response::Room::default());
+                    rooms.insert(room_id2.clone(), v5::response::Room::default());
+                    rooms
+                },
+                extensions: assign!(v5::response::Extensions::default(), {
+                    thread_subscriptions,
+                }),
+            }),
+        )
+        .await;
+
+    // If I try to get the subscription status for thread 1, it's still hitting
+    // network, because it doesn't know yet about the result of the catch-up
+    // request. (Ideally, the choice of whether some information is outdated or
+    // not would be per room/thread pair, but for simplicity it's global right
+    // now.)
+    server
+        .mock_room_get_thread_subscription()
+        .match_room_id(room_id1.clone())
+        .match_thread_id(thread1.clone())
+        .ok(true)
+        .mock_once()
+        .mount()
+        .await;
+
+    let room1 = client.get_room(&room_id1).unwrap();
+    let sub1 = room1.load_or_fetch_thread_subscription(&thread1).await.unwrap();
+    assert_eq!(sub1, Some(matrix_sdk::room::ThreadSubscription { automatic: true }));
+
+    // All the thread subscriptions are eventually known in the database.
+    sleep(Duration::from_millis(400)).await;
+
+    let stored3 = client
+        .state_store()
+        .load_thread_subscription(&room_id1, &thread3)
+        .await
+        .expect("loading room1/thread3 works fine")
+        .expect("found room1/thread3 subscription");
+    assert_eq!(stored3.status, ThreadSubscriptionStatus::Subscribed { automatic: false });
+    assert_eq!(stored3.bump_stamp, Some(1337));
+
+    // So the client will use the database only to load_or_fetch thread
+    // subscriptions. (Which is confirmed by the absence of mocking the
+    // room_get_thread_subscription endpoint for thread3.)
+    let sub3 = room1.load_or_fetch_thread_subscription(&thread3).await.unwrap();
+    assert_eq!(sub3, Some(matrix_sdk::room::ThreadSubscription { automatic: false }));
+}