package metric

import (
	"github.com/prometheus/client_golang/prometheus"
	"reflect"
	"testing"
)

func Test_labelAlignment(t *testing.T) {
	tds := []struct {
		in1    []string
		in2    prometheus.Labels
		in2New prometheus.Labels
	}{
		{
			[]string{"label1", "label2"},
			map[string]string{"label1": "1"},
			map[string]string{"label1": "1", "label2": missVal},
		},
		{
			[]string{"label1", "label3"},
			map[string]string{"label1": "1", "label2": "2"},
			map[string]string{"label1": "1", "label3": missVal},
		},
		{
			[]string{},
			map[string]string{"label1": "1", "label2": "2"},
			map[string]string{},
		},
		{
			[]string{"label1", "label3", "label4"},
			map[string]string{"label1": "1", "label2": "2"},
			map[string]string{"label1": "1", "label3": missVal, "label4": missVal},
		},
	}
	for _, d := range tds {
		//var org map[string]string
		//copy(org, d.in2)
		result := labelAlignment(d.in1, d.in2)
		t.Log(result, d.in2New)

		if !reflect.DeepEqual(result, d.in2New) {

			t.Errorf("Input: %#v, Expected is not same as , get ", d)
		}

	}
}