设计模式——3 开闭原则

package inital

import "fmt"

type PPerson struct{
   name string
}

func (this *PPerson)SetName(){
   this.name="小力"

}
func (this *PPerson)By(method string){
   switch method {
   case "car":
      aa:=Car{}
      aa.ByCar()
   case "bike":
      bb:=Bike{}
      bb.Bike()

   }
}
type Car struct{
}
func(this Car) ByCar(){
   fmt.Println("坐车去........")
}
type Bike struct{
}
func (this Bike)Bike(){
   fmt.Println("骑自行车去.......")
}

//TODO 上述的不符合开闭原则  修改如下  也不符合单一职责原则
func (this *PPerson)ByBikeSplit(bike Bike){
   bike.Bike()
}
func (this *PPerson)ByCarSplit(car Car){
   car.ByCar()
}
测试代码如下：

func TestOpenClose(t *testing.T){
   person :=inital.PPerson{}
   person.By("bike")

   //person.SetName()
   //person.GetSkin()
   //person.Walk()
}

func TestAvoidOpenClose(t *testing.T){
   person :=inital.PPerson{}
   car:=inital.Car{}
   bike :=inital.Bike{}
   person.ByBikeSplit(bike)
   person.ByCarSplit(car)

   //person.By("bike")

   //person.SetName()
   //person.GetSkin()
   //person.Walk()
}