package integration

import (
	"io/ioutil"
	"os"
	"testing"
)

func TestPauseMember(t *testing.T) {
	defer afterTest(t)
	c := NewCluster(t, 5)
	c.Launch(t)
	defer c.Terminate(t)

	for i := 0; i < 5; i++ {
		c.Members[i].Pause()
		membs := append([]*member{}, c.Members[:i]...)
		membs = append(membs, c.Members[i+1:]...)
		c.waitLeader(t, membs)
		clusterMustProgress(t, membs)
		c.Members[i].Resume()
	}
	c.waitLeader(t, c.Members)
	clusterMustProgress(t, c.Members)
}

func TestRestartMember(t *testing.T) {
	defer afterTest(t)
	c := NewCluster(t, 3)
	c.Launch(t)
	defer c.Terminate(t)

	for i := 0; i < 3; i++ {
		c.Members[i].Stop(t)
		membs := append([]*member{}, c.Members[:i]...)
		membs = append(membs, c.Members[i+1:]...)
		c.waitLeader(t, membs)
		clusterMustProgress(t, membs)
		err := c.Members[i].Restart(t)
		if err != nil {
			t.Fatal(err)
		}
	}
	clusterMustProgress(t, c.Members)
}

func TestLaunchDuplicateMemberShouldFail(t *testing.T) {
	size := 3
	c := NewCluster(t, size)
	m := c.Members[0].Clone(t)
	var err error
	m.DataDir, err = ioutil.TempDir(os.TempDir(), "etcd")
	if err != nil {
		t.Fatal(err)
	}
	c.Launch(t)
	defer c.Terminate(t)

	if err := m.Launch(); err == nil {
		t.Errorf("unexpect successful launch")
	}
}