package safeChan

import (
	"github.com/fox/fox/ksync"
	"github.com/fox/fox/log"
	"testing"
	"time"
)

func initLog() {
	log.Open("test.log", log.DebugL)
}

func OriginChanPanic(t *testing.T) {
	och := make(chan string, 10)
	go func() {
		och <- "hello"
		t.Log("write hello")
		close(och)
		//close(och) // 多次关闭也会panic
	}()

	time.Sleep(time.Millisecond)
	t.Log("origin chan was closed")

	ksync.GoSafe(func() {
		och <- "world"
	}, nil)
}

func SafeChanNoPanic(t *testing.T) {
	ch := NewSafeChan[string](12)
	go func() {
		_ = ch.Write("hello")
		t.Log("write hello. 剩余数量:", ch.Size())
	}()
	ch.Close()
	if err := ch.Write("zzz"); err != nil {
		t.Log("write zzz err.", err)
	}

	breakNum := 0
	for {

		select {
		case v, ok := <-ch.Reader():
			if ok {
				t.Log("read", v, " 剩余数量:", ch.Size())
			} else {
				t.Log("break")
				breakNum++
			}

		default:
			t.Log("panic")
			breakNum++
		}
		if breakNum > 10 {
			break
		}
	}

}

func TestSafeChan(t *testing.T) {
	initLog()
	OriginChanPanic(t)
	time.Sleep(time.Second * 1)
	SafeChanNoPanic(t)
	// 防止主协程过早退出，导致go协程里无法打印
	time.Sleep(time.Second * 1)
}