颤振单元测试websocket

Question

我实现了signalR websocket类，现在我想进行一些单元测试： 这就是我所拥有的：

class WebSocket {
  HubConnection _hubConnection;
  String _environmentUrl;
  HubConnectionState get connectionStatus => _hubConnection.state; // getter to recieve status


  WebSocket(this._environmentUrl); // constructor

  void connect() async {
    _buildConnection();
    try {
      await _hubConnection.start();
      print('Conected!');
    } catch (exception) {
      print('$exception something went weong!');
    }
  }

  void _buildConnection() {
    _hubConnection = HubConnectionBuilder().withUrl(_environmentUrl).build();
  }

}

和我的单元测试：

void main() {
  test('Should create a Websocket', () async {
    WebSocket webSocket = WebSocket(EnvironmentHml.socketUrl);
    webSocket.connect();
    expect(webSocket.connectionStatus, HubConnectionState.Connected);
  });

}

一切正常，但是当我运行单元测试时，我得到了：

Expected: HubConnectionState:<HubConnectionState.Connected>

Actual: HubConnectionState:<HubConnectionState.Disconnected>

因为连接方法是异步的，所以请不要理我