bench001_test.go

var jsonData = []byte(`{"foo":true,"bar":1,"hoge":"hogehoge"}`)
var data map[string]interface{}

func BenchmarkUnmarshal(b *testing.B) {
	for n := 0; n < b.N; n++ {
		json.Unmarshal(jsonData, &data)
	}
}

var buf bytes.Buffer

func init() {
	buf.Write([]byte(`{"foo":true,"bar":1,"hoge":"hogehoge"}`))
}

func BenchmarkDecoder(b *testing.B) {
	for n := 0; n < b.N; n++ {
		json.NewDecoder(&buf).Decode(&data)
	}
}

BenchmarkUnmarshal-2      300000              4632 ns/op     496 B/op         19 allocs/op
BenchmarkDecoder-2       3000000               491 ns/op     928 B/op          2 allocs/op