package proxy

import (
	"testing"
	"time"
)

func TestHealthCheck(t *testing.T) {
	upstream := &staticUpstream{
		from:        "",
		Hosts:       testPool(),
		Policy:      &Random{},
		FailTimeout: 10 * time.Second,
		MaxFails:    1,
	}
	upstream.healthCheck()
	if upstream.Hosts[0].Down() {
		t.Error("Expected first host in testpool to not fail healthcheck.")
	}
	if !upstream.Hosts[1].Down() {
		t.Error("Expected second host in testpool to fail healthcheck.")
	}
}

func TestSelect(t *testing.T) {
	upstream := &staticUpstream{
		from:        "",
		Hosts:       testPool()[:3],
		Policy:      &Random{},
		FailTimeout: 10 * time.Second,
		MaxFails:    1,
	}
	upstream.Hosts[0].Unhealthy = true
	upstream.Hosts[1].Unhealthy = true
	upstream.Hosts[2].Unhealthy = true
	if h := upstream.Select(); h != nil {
		t.Error("Expected select to return nil as all host are down")
	}
	upstream.Hosts[2].Unhealthy = false
	if h := upstream.Select(); h == nil {
		t.Error("Expected select to not return nil")
	}
}