package refs

import (
	"strconv"
	"testing"

	refstest "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs/test"
	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/util/proto"
)

func BenchmarkObjectIDSlice(b *testing.B) {
	for _, size := range []int{0, 1, 50} {
		b.Run(strconv.Itoa(size)+" elements", func(b *testing.B) {
			benchmarkObjectIDSlice(b, size)
		})
	}
}

func benchmarkObjectIDSlice(b *testing.B, size int) {
	ids := refstest.GenerateObjectIDs(false)

	b.Run("marshal", func(b *testing.B) {
		b.ReportAllocs()
		for i := 0; i < b.N; i++ {
			size := 0
			for _, id := range ids {
				size += proto.NestedStructureSize(9, id)
			}

			buf := make([]byte, size)
			offset := 0
			for _, id := range ids {
				offset += proto.NestedStructureMarshal(9, buf[offset:], id)
			}

			if offset != len(buf) {
				b.FailNow()
			}
		}
	})
}