go-study/observer/observer_test.go

package observer

import (
	"fmt"
	"testing"
	"time"
)

func TestObserver(t *testing.T) {
	sendEmail := make(Observer)
	notifyWelcome := make(Observer)

	userRegister := NewSubject()
	userRegister.Attach(sendEmail, notifyWelcome)

	go func() {
		for data := range sendEmail {
			fmt.Println("The send email service receive data: ", data)
		}
	}()

	go func() {
		for data := range notifyWelcome {
			fmt.Println("The notify welcome service receive data: ", data)
		}
	}()

	newUser1 := "fantasticbin"
	newUser2 := "gan"
	userRegister.Notify(newUser1)
	userRegister.Notify(newUser2)
	// 休眠防止主协程退出
	time.Sleep(1 * time.Second)
}