package updateip

import (
	"testing"

	"github.com/stretchr/testify/assert"
)

func TestCompressLabel(t *testing.T) {
	testCases := []struct {
		desc           string
		domain, record string
		expected       string
	}{
		{
			"same",
			"example.org",
			"example.org",
			"@",
		},
		{
			"same_fqdn",
			"example.org.",
			"example.org",
			"@",
		},
		{
			"simple",
			"example.org",
			"www.example.org",
			"www",
		},
		{
			"unrelated",
			"example.org",
			"example.net",
			"example.net",
		},
	}

	for _, test := range testCases {
		t.Run(test.desc, func(it *testing.T) {
			it.Parallel()

			result := CompressLabel(test.domain, test.record)
			assert.Equal(it, test.expected, result)
		})
	}
}

func TestExpandLabel(t *testing.T) {
	testCases := []struct {
		desc           string
		domain, record string
		expected       string
	}{
		{
			"same",
			"example.org",
			"@",
			"example.org",
		},
		{
			"simple",
			"example.org",
			"www",
			"www.example.org",
		},
		{
			"unrelated",
			"example.org",
			"example.net",
			"example.net.example.org",
		},
		{
			"using_at",
			"example.org",
			"www.@",
			"www.example.org",
		},
	}

	for _, test := range testCases {
		t.Run(test.desc, func(it *testing.T) {
			it.Parallel()

			result := ExapandLabel(test.domain, test.record)
			assert.Equal(it, test.expected, result)
		})
	}
}