package monitor

import (
	"testing"
	"time"
)

func Test_Item(t *testing.T) {
	a := NewItem("localhost:12345", time.Second)
	b := NewItem("localhost:54321", time.Minute)
	if a.Compare(b) != -1 {
		t.Errorf("incorrect item comparison")
	}
	was := b.next
	if was == b.increment().next {
		t.Errorf("increment didn't apply")
	}
}

func Test_ItemCompare(t *testing.T) {
	cases := []struct {
		inter  [2]time.Duration
		nexts  [2]time.Time
		result int
	}{
		{
			nexts:  [2]time.Time{time.Unix(0, 0), time.Unix(10, 10)},
			result: -1,
		},
		{
			nexts:  [2]time.Time{time.Unix(10, 10), time.Unix(0, 0)},
			result: 1,
		},
		{
			nexts:  [2]time.Time{time.Unix(10, 10), time.Unix(10, 10)},
			result: 0,
		},
		{
			nexts:  [2]time.Time{time.Unix(0, 0), time.Unix(10, 10)},
			result: -1,
		},
		{
			inter:  [2]time.Duration{time.Second, time.Minute},
			result: -1,
		},
		{
			inter:  [2]time.Duration{time.Minute, time.Second},
			result: 1,
		},
		{
			inter:  [2]time.Duration{time.Second, time.Second},
			result: 0,
		},
	}
	for _, c := range cases {
		comparison := (&Item{next: c.nexts[0], Interval: Duration{c.inter[0]}}).Compare(&Item{next: c.nexts[1], Interval: Duration{c.inter[1]}})
		if comparison != c.result {
			t.Errorf("failed to compare %v: got %v, expected %v", c.nexts, comparison, c.result)
		}
	}
}