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|
package json
import (
"math"
"strconv"
"testing"
)
func TestAppendInt(t *testing.T) {
var ints []int64
for i := range 64 {
u := uint64(1) << i
ints = append(ints, int64(u-1), int64(u), int64(u+1), -int64(u))
}
var std, our [20]byte
for _, i := range ints {
expected := strconv.AppendInt(std[:], i, 10)
actual := appendInt(our[:], i)
if string(expected) != string(actual) {
t.Fatalf("appendInt(%d) = %v, expected = %v", i, string(actual), string(expected))
}
}
}
func benchStd(b *testing.B, n int64) {
var buf [20]byte
b.ResetTimer()
for range b.N {
strconv.AppendInt(buf[:0], n, 10)
}
}
func benchNew(b *testing.B, n int64) {
var buf [20]byte
b.ResetTimer()
for range b.N {
appendInt(buf[:0], n)
}
}
func BenchmarkAppendIntStd1(b *testing.B) {
benchStd(b, 1)
}
func BenchmarkAppendInt1(b *testing.B) {
benchNew(b, 1)
}
func BenchmarkAppendIntStdMinI64(b *testing.B) {
benchStd(b, math.MinInt64)
}
func BenchmarkAppendIntMinI64(b *testing.B) {
benchNew(b, math.MinInt64)
}
|
