public void TestAtm()
{
//问题1:接收者对象是一个还是多个好？
BankBaseServer bankBaseServer = new BankBaseServer();//接收者（Receiver）角色
AtmCommand depositCommand = new AtmDepositCommand(bankBaseServer);//实例化具体的命令角色
AtmCommand withdrawCommand = new AtmWithdrawCommand(bankBaseServer);//实例化具体的命令角色
AtmCommand powerPurchaseCommand = new AtmPowerPurchaseCommand(bankBaseServer);//实例化具体的命令角色
AtmMachine atmMachine = new AtmMachine();//请求者（Invoker）角色
//接收者接受存款命令并执行
Assert.AreEqual(0m, bankBaseServer.GetBalance());
Assert.AreEqual(0m, bankBaseServer.GetElectricityUnits());
//接收者接受存款命令并执行存款1000
atmMachine.SetCommand(depositCommand);
atmMachine.Invoke(1000m);
Assert.AreEqual(1000m, bankBaseServer.GetBalance());
//接收者接受存款命令并执行取款300
atmMachine.SetCommand(withdrawCommand);
atmMachine.Invoke(300m);
Assert.AreEqual(700m, bankBaseServer.GetBalance());
//接收者接受存款命令并执行缴电费100度
atmMachine.SetCommand(powerPurchaseCommand);
atmMachine.Invoke(100m);
Assert.AreEqual(500m, bankBaseServer.GetBalance());
Assert.AreEqual(100m, bankBaseServer.GetElectricityUnits());
}
public AtmCommand(BankBaseServer bankBaseServer)
{
this.bankbaseServer = bankBaseServer;
}
public AtmWithdrawCommand(BankBaseServer bankBaseServer)
: base(bankBaseServer)
{
}
public AtmDepositCommand(BankBaseServer bankBaseServer)
: base(bankBaseServer)
{
}
public AtmPowerPurchaseCommand(BankBaseServer bankBaseServer)
: base(bankBaseServer)
{
}