write test for thread list pagination

Author: justjanne

spec/integ/matrix-client-event-timeline.spec.ts

@@ -17,6 +17,7 @@ limitations under the License.
 import * as utils from "../test-utils/test-utils";
 import { ClientEvent, EventTimeline, Filter, IEvent, MatrixClient, MatrixEvent, Room } from "../../src/matrix";
 import { logger } from "../../src/logger";
+import { encodeUri } from "../../lib/utils";
 import { TestClient } from "../TestClient";
 import { FeatureSupport, Thread, THREAD_RELATION_TYPE } from "../../src/models/thread";
 
@@ -886,6 +887,96 @@ describe("MatrixClient event timelines", function() {
         });
     });
 
+    describe("paginateEventTimeline for thread list timeline", function() {
+        async function flushHttp<T>(promise: Promise<T>): Promise<T> {
+            return Promise.all([promise, httpBackend.flushAllExpected()]).then(([result]) => result);
+        }
+
+        it("should allow you to paginate backwards", async function() {
+            // @ts-ignore
+            client.clientOpts.experimentalThreadSupport = true;
+            Thread.setServerSideSupport(FeatureSupport.Experimental);
+            Thread.setServerSideListSupport(FeatureSupport.Stable);
+
+            const room = client.getRoom(roomId);
+            const [allThreads] = await room.createThreadsTimelineSets();
+
+            httpBackend.when("GET", encodeUri("/_matrix/client/r0/rooms/$roomId/context/$eventId", {
+                $roomId: roomId,
+                $eventId: THREAD_ROOT.event_id,
+            })).respond(200, {
+                end: "",
+                start: "",
+                state: [],
+                events_before: [],
+                events_after: [],
+                event: THREAD_ROOT,
+            });
+
+            await flushHttp(client.getEventTimeline(allThreads, THREAD_ROOT.event_id));
+            httpBackend.when("GET", encodeUri("/_matrix/client/r0/rooms/$roomId/threads", {
+                $roomId: roomId,
+            })).respond(200, {
+                chunk: [THREAD_ROOT],
+            });
+            const timeline = await flushHttp(client.getLatestTimeline(allThreads));
+            httpBackend.when("GET", encodeUri("/_matrix/client/r0/rooms/$roomId/threads", {
+                $roomId: roomId,
+            })).respond(200, {
+                chunk: [THREAD_ROOT],
+                next_batch: "end_token0",
+            });
+            const success = await flushHttp(client.paginateEventTimeline(timeline, { backwards: true }));
+            expect(success).toBeTruthy();
+            expect(timeline.getEvents().length).toEqual(1);
+            expect(timeline.getEvents()[0].event).toEqual(THREAD_ROOT);
+            expect(timeline.getPaginationToken(EventTimeline.BACKWARDS))
+                .toEqual("end_token0");
+        });
+
+        it("should allow you to paginate forwards", async function() {
+            // @ts-ignore
+            client.clientOpts.experimentalThreadSupport = true;
+            Thread.setServerSideSupport(FeatureSupport.Experimental);
+            Thread.setServerSideListSupport(FeatureSupport.Stable);
+
+            const room = client.getRoom(roomId);
+            const [allThreads] = await room.createThreadsTimelineSets();
+
+            httpBackend.when("GET", encodeUri("/_matrix/client/r0/rooms/$roomId/context/$eventId", {
+                $roomId: roomId,
+                $eventId: THREAD_ROOT.event_id,
+            })).respond(200, {
+                end: "",
+                start: "",
+                state: [],
+                events_before: [],
+                events_after: [],
+                event: THREAD_ROOT,
+            });
+
+            await flushHttp(client.getEventTimeline(allThreads, THREAD_ROOT.event_id));
+            httpBackend.when("GET", encodeUri("/_matrix/client/r0/rooms/$roomId/threads", {
+                $roomId: roomId,
+            })).respond(200, {
+                chunk: [THREAD_ROOT],
+            });
+            const timeline = await flushHttp(client.getLatestTimeline(allThreads));
+            httpBackend.when("GET", encodeUri("/_matrix/client/r0/rooms/$roomId/threads", {
+                $roomId: roomId,
+            })).respond(200, {
+                chunk: [THREAD_ROOT],
+                next_batch: "start_token1",
+            });
+            const success = await flushHttp(client.paginateEventTimeline(timeline, { backwards: false }));
+            expect(success).toBeTruthy();
+            expect(timeline.getEvents().length).toEqual(1);
+            expect(timeline.getEvents()[0].event).toEqual(THREAD_ROOT);
+            expect(timeline.getPaginationToken(EventTimeline.FORWARDS))
+                .toEqual("start_token1");
+        });
+    });
+
     describe("event timeline for sent events", function() {
         const TXN_ID = "txn1";
         const event = utils.mkMessage({