Fix up more types & Sonar warnings (#2363)

* Fix up more types & Sonar warnings

* Fix test

* Add first test for callEventHandler

spec/unit/webrtc/callEventHandler.spec.ts

@@ -0,0 +1,54 @@
+/*
+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 { TestClient } from '../../TestClient';
+import { ClientEvent, EventType, MatrixEvent, RoomEvent } from "../../../src";
+import { CallEventHandler, CallEventHandlerEvent } from "../../../src/webrtc/callEventHandler";
+import { SyncState } from "../../../src/sync";
+
+describe("callEventHandler", () => {
+    it("should ignore a call if invite & hangup come within a single sync", () => {
+        const testClient = new TestClient();
+        const client = testClient.client;
+        client.callEventHandler = new CallEventHandler(client);
+        client.callEventHandler.start();
+
+        // Fire off call invite then hangup within a single sync
+        const callInvite = new MatrixEvent({
+            type: EventType.CallInvite,
+            content: {
+                call_id: "123",
+            },
+        });
+        client.emit(RoomEvent.Timeline, callInvite);
+
+        const callHangup = new MatrixEvent({
+            type: EventType.CallHangup,
+            content: {
+                call_id: "123",
+            },
+        });
+        client.emit(RoomEvent.Timeline, callHangup);
+
+        const incomingCallEmitted = jest.fn();
+        client.on(CallEventHandlerEvent.Incoming, incomingCallEmitted);
+
+        client.getSyncState = jest.fn().mockReturnValue(SyncState.Syncing);
+        client.emit(ClientEvent.Sync);
+
+        expect(incomingCallEmitted).not.toHaveBeenCalled();
+    });
+});