tests and mocks for e2e testing (#78)

* tests and mocks for e2e testing

* formatting

* fix analyze errors

lib/src/core/signal_client.dart

@@ -22,10 +22,11 @@ class SignalClient extends Disposable with EventsEmittable<SignalEvent> {
   // Connection state of the socket conection.
   ConnectionState _connectionState = ConnectionState.disconnected;
 
+  final WebSocketConnector _wsConnector;
   LiveKitWebSocket? _ws;
 
   @internal
-  SignalClient() {
+  SignalClient(WebSocketConnector wsConnector) : _wsConnector = wsConnector {
     events.listen((event) {
       logger.fine('[SignalEvent] $event');
     });
@@ -59,7 +60,7 @@ class SignalClient extends Disposable with EventsEmittable<SignalEvent> {
       // Clean up existing socket
       await _cleanUp();
       // Attempt to connect
-      _ws = await LiveKitWebSocket.connect(
+      _ws = await _wsConnector(
         rtcUri,
         WebSocketEventHandlers(
           onData: _onSocketData,
@@ -174,6 +175,9 @@ class SignalClient extends Disposable with EventsEmittable<SignalEvent> {
         events.emit(
             SignalSpeakersChangedEvent(speakers: msg.speakersChanged.speakers));
         break;
+      case lk_rtc.SignalResponse_Message.roomUpdate:
+        // TODO
+        break;
       case lk_rtc.SignalResponse_Message.connectionQuality:
         events.emit(SignalConnectionQualityUpdateEvent(
           updates: msg.connectionQuality.updates,
@@ -209,8 +213,9 @@ class SignalClient extends Disposable with EventsEmittable<SignalEvent> {
       case lk_rtc.SignalResponse_Message.refreshToken:
         events.emit(SignalTokenUpdatedEvent(token: msg.refreshToken));
         break;
-      default:
-        logger.warning('skipping unsupported signal message');
+      case lk_rtc.SignalResponse_Message.notSet:
+        logger.info('signal message not set');
+        break;
     }
   }