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xor_test.go
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/
xor_test.go
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package stun
import (
"math/rand"
"testing"
)
func TestXORSafe(t *testing.T) {
dst := make([]byte, 8)
a := []byte{1, 2, 3, 4, 5, 6, 7, 8}
b := []byte{8, 7, 7, 6, 6, 3, 4, 1}
safeXORBytes(dst, a, b)
safeXORBytes(dst, dst, a)
for i, v := range dst {
if b[i] != v {
t.Error(b[i], "!=", v)
}
}
}
func TestXORSafeBSmaller(t *testing.T) {
dst := make([]byte, 5)
a := []byte{1, 2, 3, 4, 5, 6, 7, 8}
b := []byte{8, 7, 7, 6, 6}
safeXORBytes(dst, a, b)
safeXORBytes(dst, dst, a)
for i, v := range dst {
if b[i] != v {
t.Error(b[i], "!=", v)
}
}
}
func TestXORFast(t *testing.T) {
if !supportsUnaligned {
t.Skip("No support for unaligned operations.")
}
dst := make([]byte, 8)
a := []byte{1, 2, 3, 4, 5, 6, 7, 8}
b := []byte{8, 7, 7, 6, 6, 3, 4, 1}
xorBytes(dst, a, b)
xorBytes(dst, dst, a)
for i, v := range dst {
if b[i] != v {
t.Error(b[i], "!=", v)
}
}
}
func TestXORFastBSmaller(t *testing.T) {
if !supportsUnaligned {
t.Skip("No support for unaligned operations.")
}
dst := make([]byte, 5)
a := []byte{1, 2, 3, 4, 5, 6, 7, 8}
b := []byte{8, 7, 7, 6, 6}
xorBytes(dst, a, b)
xorBytes(dst, dst, a)
for i, v := range dst {
if b[i] != v {
t.Error(b[i], "!=", v)
}
}
}
func TestXORFallback(t *testing.T) {
if !supportsUnaligned {
t.Skip("No support for unaligned operations.")
}
defer func() {
supportsUnaligned = true
}()
supportsUnaligned = false
dst := make([]byte, 5)
a := []byte{1, 2, 3, 4, 5, 6, 7, 8}
b := []byte{8, 7, 7, 6, 6}
xorBytes(dst, a, b)
xorBytes(dst, dst, a)
for i, v := range dst {
if b[i] != v {
t.Error(b[i], "!=", v)
}
}
}
func BenchmarkXOR(b *testing.B) {
rand.Seed(666)
a := make([]byte, 1024)
c := make([]byte, 1024)
rand.Read(a)
rand.Read(c)
b.SetBytes(1024)
b.RunParallel(func(pb *testing.PB) {
dst := make([]byte, len(a))
for pb.Next() {
xorBytes(dst, a, c)
}
})
}
func BenchmarkXORSafe(b *testing.B) {
rand.Seed(666)
a := make([]byte, 1024)
c := make([]byte, 1024)
rand.Read(a)
rand.Read(c)
b.SetBytes(1024)
b.RunParallel(func(pb *testing.PB) {
dst := make([]byte, len(a))
for pb.Next() {
safeXORBytes(dst, a, c)
}
})
}
func BenchmarkXORFast(b *testing.B) {
if !supportsUnaligned {
b.Skip("No support for unaligned operations.")
}
rand.Seed(666)
a := make([]byte, 1024)
c := make([]byte, 1024)
rand.Read(a)
rand.Read(c)
b.SetBytes(1024)
b.RunParallel(func(pb *testing.PB) {
dst := make([]byte, len(a))
for pb.Next() {
fastXORBytes(dst, a, c)
}
})
}