package meta_test

import (
	"bytes"
	"encoding/hex"
	"testing"

	"git.bit5.ru/backend/meta/v4"
	"github.com/stretchr/testify/require"
)

func TestMsgpackAssocWriter(t *testing.T) {
	t.Run("write struct", func(t *testing.T) {
		var buf bytes.Buffer
		wr := meta.NewMsgpackAssocWriter(&buf)

		s := TestParent{
			Field1: "blabla",
			Field2: TestFoo{
				Field: 1,
			},
			Field3: []int8{2, 4, 6},
			Field4: []TestFoo{
				{Field: 10},
				{Field: 1024},
			},
		}

		err := s.Write(wr)
		require.NoError(t, err)

		expected := "84a26631a6626c61626c61a2663281a56669656c6401a2663393020406a266349281a56669656c640a81a56669656c64cd0400"
		actual := hex.EncodeToString(buf.Bytes())
		require.EqualValues(t, expected, actual)
	})

	t.Run("write child struct", func(t *testing.T) {
		var buf bytes.Buffer
		wr := meta.NewMsgpackAssocWriter(&buf)

		s := TestChild{
			Field: "qwerty",
			TestParent: TestParent{
				Field1: "blabla",
				Field2: TestFoo{
					Field: 1,
				},
				Field3: []int8{2, 4, 6},
				Field4: []TestFoo{
					{Field: 10},
					{Field: 1024},
				},
			},
		}

		err := s.Write(wr)
		require.NoError(t, err)

		expected := "85a26631a6626c61626c61a2663281a56669656c6401a2663393020406a266349281a56669656c640a81a56669656c64cd0400a166a6717765727479"
		actual := hex.EncodeToString(buf.Bytes())
		require.EqualValues(t, expected, actual)
	})
}