////////////////////////////////////////////////////////////////////////// Public methods ///////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////// 
MinorTest.start()

Runs once to start the server.
function () {
    if (this.started) {
      throw new Error('The server was already started');
    }

    process.env.NODE_ENV        = 'production';
    process.env.FUNCTIONAL_TEST = true;

    this.port           = process.env.WORKER_PORT;
    this.requestedPorts = process.env.REQUESTED_PORTS;

    return this._startServer();
  }