package main

import (
	"os"
	"path/filepath"
	"syscall"
	"testing"
)

func TestAcquireSingleInstance(t *testing.T) {
	lockPath := filepath.Join(os.TempDir(), "nex-gateway-test.lock")
	
	origLockFile := lockFile
	lockFile = nil
	defer func() { lockFile = origLockFile }()

	f, err := os.OpenFile(lockPath, os.O_CREATE|os.O_RDWR, 0666)
	if err != nil {
		t.Fatalf("无法创建锁文件: %v", err)
	}
	defer f.Close()
	defer os.Remove(lockPath)

	err = syscall.Flock(int(f.Fd()), syscall.LOCK_EX|syscall.LOCK_NB)
	if err != nil {
		t.Fatalf("无法获取文件锁: %v", err)
	}
	defer syscall.Flock(int(f.Fd()), syscall.LOCK_UN)

	t.Log("单实例锁测试通过")
}

func TestReleaseSingleInstance(t *testing.T) {
	lockFile = nil
	
	releaseSingleInstance()
	
	t.Log("释放空锁测试通过")
}