我正在尝试为基于Qt的项目(Qt5、C++03)中的类编写单元测试。classTransaction{//Thisisjustasampleclass//..publicsignals:voidsucceeded();voidfailed();}Transaction*transaction=newTransaction(this);QSignalSpyspy(transaction,SIGNAL(succeeded()));transaction->run();spy.wait(5000);//waitfor5seconds我希望我的测试运行得更快。如果交易失败，如何在发出信号fai