public void AdapterTest()
{
//adapter pattern allows the interface of an existing class
//to be used as another interface.
//it is often used to make existing classes work with others without
//modifying their source code
Switch lightSwitch = new Switch(new Ligh());
lightSwitch.ApplySwitchsignal(true);
lightSwitch.ApplySwitchsignal(false);
Switch fanSwitch = new Switch(new Fan());
fanSwitch.ApplySwitchsignal(true);
fanSwitch.ApplySwitchsignal(false);
Switch huaweiLightSwitch = new Switch(new HuaweiLightDelegateAdapter());
huaweiLightSwitch.ApplySwitchsignal(true);
huaweiLightSwitch.ApplySwitchsignal(false);
Switch huaweiLightSwitch2 = new Switch(new HuaweiLightInheritAdapter());
huaweiLightSwitch2.ApplySwitchsignal(true);
huaweiLightSwitch2.ApplySwitchsignal(false);
}