Support dynamic room predecessor in SpaceProvider

src/autocomplete/SpaceProvider.tsx

@@ -19,12 +19,13 @@ import React from "react";
 
 import { _t } from "../languageHandler";
 import { MatrixClientPeg } from "../MatrixClientPeg";
+import SettingsStore from "../settings/SettingsStore";
 import RoomProvider from "./RoomProvider";
 
 export default class SpaceProvider extends RoomProvider {
     protected getRooms(): Room[] {
         return MatrixClientPeg.get()
-            .getVisibleRooms()
+            .getVisibleRooms(SettingsStore.getValue("feature_dynamic_room_predecessors"))
             .filter((r) => r.isSpaceRoom());
     }
 

test/autocomplete/RoomProvider-test.ts

@@ -19,7 +19,7 @@ import { MatrixClient, Room } from "matrix-js-sdk/src/matrix";
 
 import RoomProvider from "../../src/autocomplete/RoomProvider";
 import SettingsStore from "../../src/settings/SettingsStore";
-import { mkRoom, stubClient } from "../test-utils";
+import { mkRoom, mkSpace, stubClient } from "../test-utils";
 
 describe("RoomProvider", () => {
     it("suggests a room whose alias matches a prefix", async () => {
@@ -52,7 +52,8 @@ describe("RoomProvider", () => {
         const room1 = makeRoom(client, "room1:e.com");
         const room2 = makeRoom(client, "room2:e.com");
         const other = makeRoom(client, "other:e.com");
-        mocked(client.getVisibleRooms).mockReturnValue([room1, room2, other]);
+        const space = makeSpace(client, "room3:e.com");
+        mocked(client.getVisibleRooms).mockReturnValue([room1, room2, other, space]);
 
         // When we search for rooms starting with a prefix
         const roomProvider = new RoomProvider(room1);
@@ -121,6 +122,12 @@ describe("RoomProvider", () => {
     });
 });
 
+function makeSpace(client: MatrixClient, name: string): Room {
+    const space = mkSpace(client, `!${name}`);
+    space.getCanonicalAlias.mockReturnValue(`#${name}`);
+    return space;
+}
+
 function makeRoom(client: MatrixClient, name: string): Room {
     const room = mkRoom(client, `!${name}`);
     room.getCanonicalAlias.mockReturnValue(`#${name}`);

test/autocomplete/SpaceProvider-test.ts

@@ -0,0 +1,135 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+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.
+*/
+
+import { mocked } from "jest-mock";
+import { MatrixClient, Room } from "matrix-js-sdk/src/matrix";
+
+import SpaceProvider from "../../src/autocomplete/SpaceProvider";
+import SettingsStore from "../../src/settings/SettingsStore";
+import { mkRoom, mkSpace, stubClient } from "../test-utils";
+
+describe("SpaceProvider", () => {
+    it("suggests a space whose alias matches a prefix", async () => {
+        // Given a space
+        const client = stubClient();
+        const space = makeSpace(client, "space:e.com");
+        mocked(client.getVisibleRooms).mockReturnValue([space]);
+
+        // When we search for spaces starting with its prefix
+        const spaceProvider = new SpaceProvider(space);
+        const completions = await spaceProvider.getCompletions("#sp", { beginning: true, start: 0, end: 3 });
+
+        // Then we find it
+        expect(completions).toStrictEqual([
+            {
+                type: "room",
+                completion: space.getCanonicalAlias(),
+                completionId: space.roomId,
+                component: expect.anything(),
+                href: "https://matrix.to/#/#space:e.com",
+                range: { start: 0, end: 3 },
+                suffix: " ",
+            },
+        ]);
+    });
+
+    it("suggests only spaces matching a prefix", async () => {
+        // Given some spaces with different names
+        const client = stubClient();
+        const space1 = makeSpace(client, "space1:e.com");
+        const space2 = makeSpace(client, "space2:e.com");
+        const other = makeSpace(client, "other:e.com");
+        const room = makeRoom(client, "space3:e.com");
+        mocked(client.getVisibleRooms).mockReturnValue([space1, space2, other, room]);
+
+        // When we search for spaces starting with a prefix
+        const spaceProvider = new SpaceProvider(space1);
+        const completions = await spaceProvider.getCompletions("#sp", { beginning: true, start: 0, end: 3 });
+
+        // Then we find the two spaces with that prefix, but not the other one
+        expect(completions).toStrictEqual([
+            {
+                type: "room",
+                completion: space1.getCanonicalAlias(),
+                completionId: space1.roomId,
+                component: expect.anything(),
+                href: "https://matrix.to/#/#space1:e.com",
+                range: { start: 0, end: 3 },
+                suffix: " ",
+            },
+            {
+                type: "room",
+                completion: space2.getCanonicalAlias(),
+                completionId: space2.roomId,
+                component: expect.anything(),
+                href: "https://matrix.to/#/#space2:e.com",
+                range: { start: 0, end: 3 },
+                suffix: " ",
+            },
+        ]);
+    });
+
+    describe("If the feature_dynamic_room_predecessors is not enabled", () => {
+        beforeEach(() => {
+            jest.spyOn(SettingsStore, "getValue").mockReturnValue(false);
+        });
+
+        it("Passes through the dynamic predecessor setting", async () => {
+            const client = stubClient();
+            const space = makeSpace(client, "space:e.com");
+            mocked(client.getVisibleRooms).mockReturnValue([space]);
+            mocked(client.getVisibleRooms).mockClear();
+
+            const spaceProvider = new SpaceProvider(space);
+            await spaceProvider.getCompletions("#ro", { beginning: true, start: 0, end: 3 });
+
+            expect(client.getVisibleRooms).toHaveBeenCalledWith(false);
+        });
+    });
+
+    describe("If the feature_dynamic_room_predecessors is enabled", () => {
+        beforeEach(() => {
+            // Turn on feature_dynamic_space_predecessors setting
+            jest.spyOn(SettingsStore, "getValue").mockImplementation(
+                (settingName) => settingName === "feature_dynamic_room_predecessors",
+            );
+        });
+
+        it("Passes through the dynamic predecessor setting", async () => {
+            const client = stubClient();
+            const space = makeSpace(client, "space:e.com");
+            mocked(client.getVisibleRooms).mockReturnValue([space]);
+            mocked(client.getVisibleRooms).mockClear();
+
+            const spaceProvider = new SpaceProvider(space);
+            await spaceProvider.getCompletions("#ro", { beginning: true, start: 0, end: 3 });
+
+            expect(client.getVisibleRooms).toHaveBeenCalledWith(true);
+        });
+    });
+});
+
+function makeSpace(client: MatrixClient, name: string): Room {
+    const space = mkSpace(client, `!${name}`);
+    space.getCanonicalAlias.mockReturnValue(`#${name}`);
+    return space;
+}
+
+function makeRoom(client: MatrixClient, name: string): Room {
+    const room = mkRoom(client, `!${name}`);
+    room.getCanonicalAlias.mockReturnValue(`#${name}`);
+    return room;
+}