Add voice broadcast pre-recoding PiP (#9548)

test/voice-broadcast/utils/setUpVoiceBroadcastPreRecording-test.ts

@@ -0,0 +1,102 @@
+/*
+Copyright 2022 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 {
+    checkVoiceBroadcastPreConditions,
+    VoiceBroadcastPreRecording,
+    VoiceBroadcastPreRecordingStore,
+    VoiceBroadcastRecordingsStore,
+} from "../../../src/voice-broadcast";
+import { setUpVoiceBroadcastPreRecording } from "../../../src/voice-broadcast/utils/setUpVoiceBroadcastPreRecording";
+import { mkRoomMemberJoinEvent, stubClient } from "../../test-utils";
+
+jest.mock("../../../src/voice-broadcast/utils/checkVoiceBroadcastPreConditions");
+
+describe("setUpVoiceBroadcastPreRecording", () => {
+    const roomId = "!room:example.com";
+    let client: MatrixClient;
+    let userId: string;
+    let room: Room;
+    let preRecordingStore: VoiceBroadcastPreRecordingStore;
+    let recordingsStore: VoiceBroadcastRecordingsStore;
+
+    const itShouldReturnNull = () => {
+        it("should return null", () => {
+            expect(setUpVoiceBroadcastPreRecording(room, client, recordingsStore, preRecordingStore)).toBeNull();
+            expect(checkVoiceBroadcastPreConditions).toHaveBeenCalledWith(room, client, recordingsStore);
+        });
+    };
+
+    beforeEach(() => {
+        client = stubClient();
+
+        const clientUserId = client.getUserId();
+        if (!clientUserId) fail("empty userId");
+        userId = clientUserId;
+
+        room = new Room(roomId, client, userId);
+        preRecordingStore = new VoiceBroadcastPreRecordingStore();
+        recordingsStore = new VoiceBroadcastRecordingsStore();
+    });
+
+    describe("when the preconditions fail", () => {
+        beforeEach(() => {
+            mocked(checkVoiceBroadcastPreConditions).mockReturnValue(false);
+        });
+
+        itShouldReturnNull();
+    });
+
+    describe("when the preconditions pass", () => {
+        beforeEach(() => {
+            mocked(checkVoiceBroadcastPreConditions).mockReturnValue(true);
+        });
+
+        describe("and there is no user id", () => {
+            beforeEach(() => {
+                mocked(client.getUserId).mockReturnValue(null);
+            });
+
+            itShouldReturnNull();
+        });
+
+        describe("and there is no room member", () => {
+            beforeEach(() => {
+                // check test precondition
+                expect(room.getMember(userId)).toBeNull();
+            });
+
+            itShouldReturnNull();
+        });
+
+        describe("and there is a room member", () => {
+            beforeEach(() => {
+                room.currentState.setStateEvents([
+                    mkRoomMemberJoinEvent(userId, roomId),
+                ]);
+            });
+
+            it("should create a voice broadcast pre-recording", () => {
+                const result = setUpVoiceBroadcastPreRecording(room, client, recordingsStore, preRecordingStore);
+                expect(checkVoiceBroadcastPreConditions).toHaveBeenCalledWith(room, client, recordingsStore);
+                expect(result).toBeInstanceOf(VoiceBroadcastPreRecording);
+            });
+        });
+    });
+});