1package json
2
3import (
4	"math"
5	"strconv"
6	"testing"
7)
8
9func TestAppendInt(t *testing.T) {
10	var ints []int64
11	for i := 0; i < 64; i++ {
12		u := uint64(1) << i
13		ints = append(ints, int64(u-1), int64(u), int64(u+1), -int64(u))
14	}
15
16	var std [20]byte
17	var our [20]byte
18
19	for _, i := range ints {
20		expected := strconv.AppendInt(std[:], i, 10)
21		actual := appendInt(our[:], i)
22		if string(expected) != string(actual) {
23			t.Fatalf("appendInt(%d) = %v, expected = %v", i, string(actual), string(expected))
24		}
25	}
26}
27
28func benchStd(b *testing.B, n int64) {
29	var buf [20]byte
30	b.ResetTimer()
31	for i := 0; i < b.N; i++ {
32		strconv.AppendInt(buf[:0], n, 10)
33	}
34}
35
36func benchNew(b *testing.B, n int64) {
37	var buf [20]byte
38	b.ResetTimer()
39	for i := 0; i < b.N; i++ {
40		appendInt(buf[:0], n)
41	}
42}
43
44func BenchmarkAppendIntStd1(b *testing.B) {
45	benchStd(b, 1)
46}
47
48func BenchmarkAppendInt1(b *testing.B) {
49	benchNew(b, 1)
50}
51
52func BenchmarkAppendIntStdMinI64(b *testing.B) {
53	benchStd(b, math.MinInt64)
54}
55
56func BenchmarkAppendIntMinI64(b *testing.B) {
57	benchNew(b, math.MinInt64)
58}
59