Add basic creation / entering tests for group calls (#2575)

* Add basic creation / entering tests for group calls

* Missing space

Co-authored-by: Robin <robin@robin.town>

* Assert more of the group call member event

and also move call leaving to a finally so it doesn't leaving a call
hagning if it fails.

Co-authored-by: Robin <robin@robin.town>

spec/test-utils/webrtc.ts

@@ -58,9 +58,13 @@ class MockMediaStreamAudioSourceNode {
     connect() {}
 }
 
+class MockAnalyser {
+    getFloatFrequencyData() { return 0.0; }
+}
+
 export class MockAudioContext {
     constructor() {}
-    createAnalyser() { return {}; }
+    createAnalyser() { return new MockAnalyser(); }
     createMediaStreamSource() { return new MockMediaStreamAudioSourceNode(); }
     close() {}
 }
@@ -154,4 +158,5 @@ export class MockMediaHandler {
     }
     stopUserMediaStream() { }
     hasAudioDevice() { return true; }
+    stopAllStreams() {}
 }

spec/unit/webrtc/groupCall.spec.ts

@@ -0,0 +1,98 @@
+/*
+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 { EventType, GroupCallIntent, GroupCallType, Room, RoomMember } from '../../../src';
+import { GroupCall } from "../../../src/webrtc/groupCall";
+import { MatrixClient } from "../../../src/client";
+import { MockAudioContext, MockMediaHandler } from '../../test-utils/webrtc';
+
+const FAKE_SELF_USER_ID = "@me:test.dummy";
+const FAKE_SELF_DEVICE_ID = "AAAAAA";
+const FAKE_SELF_SESSION_ID = "1";
+const FAKE_ROOM_ID = "!fake:test.dummy";
+
+describe('Group Call', function() {
+    beforeEach(function() {
+        // @ts-ignore Mock
+        global.AudioContext = MockAudioContext;
+    });
+
+    it("sends state event to room when creating", async () => {
+        const mockSendState = jest.fn();
+
+        const mockClient = {
+            sendStateEvent: mockSendState,
+            groupCallEventHandler: {
+                groupCalls: new Map(),
+            },
+        } as unknown as MatrixClient;
+
+        const room = new Room(FAKE_ROOM_ID, mockClient, FAKE_SELF_USER_ID);
+        const groupCall = new GroupCall(mockClient, room, GroupCallType.Video, false, GroupCallIntent.Prompt);
+
+        await groupCall.create();
+
+        expect(mockSendState.mock.calls[0][0]).toEqual(FAKE_ROOM_ID);
+        expect(mockSendState.mock.calls[0][1]).toEqual(EventType.GroupCallPrefix);
+        expect(mockSendState.mock.calls[0][2]["m.type"]).toEqual(GroupCallType.Video);
+        expect(mockSendState.mock.calls[0][2]["m.intent"]).toEqual(GroupCallIntent.Prompt);
+    });
+
+    it("sends member state event to room on enter", async () => {
+        const mockSendState = jest.fn();
+        const mockMediaHandler = new MockMediaHandler();
+
+        const mockClient = {
+            sendStateEvent: mockSendState,
+            groupCallEventHandler: {
+                groupCalls: new Map(),
+            },
+            callEventHandler: {
+                calls: new Map(),
+            },
+            mediaHandler: mockMediaHandler,
+            getMediaHandler: () => mockMediaHandler,
+            getUserId: () => FAKE_SELF_USER_ID,
+            getDeviceId: () => FAKE_SELF_DEVICE_ID,
+            getSessionId: () => FAKE_SELF_SESSION_ID,
+            emit: jest.fn(),
+            on: jest.fn(),
+            removeListener: jest.fn(),
+        } as unknown as MatrixClient;
+
+        const room = new Room(FAKE_ROOM_ID, mockClient, FAKE_SELF_USER_ID);
+        const groupCall = new GroupCall(mockClient, room, GroupCallType.Video, false, GroupCallIntent.Prompt);
+
+        room.currentState.members[FAKE_SELF_USER_ID] = {
+            userId: FAKE_SELF_USER_ID,
+        } as unknown as RoomMember;
+
+        await groupCall.create();
+
+        try {
+            await groupCall.enter();
+
+            expect(mockSendState.mock.lastCall[0]).toEqual(FAKE_ROOM_ID);
+            expect(mockSendState.mock.lastCall[1]).toEqual(EventType.GroupCallMemberPrefix);
+            expect(mockSendState.mock.lastCall[2]['m.calls'].length).toEqual(1);
+            expect(mockSendState.mock.lastCall[2]['m.calls'][0]["m.call_id"]).toEqual(groupCall.groupCallId);
+            expect(mockSendState.mock.lastCall[2]['m.calls'][0]['m.devices'].length).toEqual(1);
+            expect(mockSendState.mock.lastCall[2]['m.calls'][0]['m.devices'][0].device_id).toEqual(FAKE_SELF_DEVICE_ID);
+        } finally {
+            groupCall.leave();
+        }
+    });
+});