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packetid_storage_test.go
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packetid_storage_test.go
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package secureio
import (
"fmt"
"math/rand"
"testing"
"github.com/stretchr/testify/assert"
)
func TestPacketIDStorage_shiftValue(t *testing.T) {
r := rand.New(rand.NewSource(0))
v0 := r.Uint64()
v1 := r.Uint64()
stor := newPacketIDStorage(128)
stor.table[0] = v0
stor.table[1] = v1
stor.shiftValue(31)
assert.Equal(t, v0<<31, stor.table[0])
assert.Equal(t, (v0>>33)|(v1<<31), stor.table[1])
}
func TestPacketIDStorage_getAtOffset(t *testing.T) {
stor := newPacketIDStorage(128)
stor.table[1] = 8
assert.Equal(t, false, stor.getAtOffset(66))
assert.Equal(t, true, stor.getAtOffset(67))
assert.Equal(t, false, stor.getAtOffset(68))
}
func TestPacketIDStorage_setAtOffset(t *testing.T) {
stor := newPacketIDStorage(128)
stor.setAtOffset(67, true)
assert.Equal(t, uint64(0), stor.table[0])
assert.Equal(t, uint64(8), stor.table[1])
stor.setAtOffset(67, false)
assert.Equal(t, uint64(0), stor.table[1])
}
func TestPacketIDStorage_Push(t *testing.T) {
for _, storSize := range []uint{0, 64, 128} {
stor := newPacketIDStorage(storSize)
assert.True(t, stor.Push(1), storSize)
assert.True(t, stor.Push(2), storSize)
assert.False(t, stor.Push(2), storSize)
assert.False(t, stor.Push(1), storSize)
assert.True(t, stor.Push(3), storSize)
assert.False(t, stor.Push(1), storSize)
if storSize == 0 {
continue
}
assert.True(t, stor.Push(uint64(storSize)), storSize)
assert.True(t, stor.Push(uint64(storSize)-1), storSize)
assert.True(t, stor.Push(uint64(storSize)-2), storSize)
assert.True(t, stor.Push(4), storSize)
assert.True(t, stor.Push(uint64(storSize+1)), storSize)
assert.False(t, stor.Push(uint64(storSize)), storSize)
assert.False(t, stor.Push(uint64(storSize)-1), storSize)
assert.False(t, stor.Push(uint64(storSize)-2), storSize)
assert.False(t, stor.Push(4), storSize)
assert.False(t, stor.Push(1), storSize)
// randomValid-test:
s := make([]uint64, storSize)
stor = newPacketIDStorage(storSize)
for idx := 0; idx < int(storSize); idx++ {
s[idx] = uint64(idx)
}
for idx := 0; idx < int(storSize); idx += int(storSize) {
blockSize := min(int(storSize), int(storSize)-idx)
rand.Shuffle(blockSize, func(i, j int) {
s[idx+i], s[idx+j] = s[idx+j], s[idx+i]
})
}
for idx := 0; idx < int(storSize); idx++ {
assert.True(t, stor.Push(s[idx]), fmt.Sprint(storSize, idx))
}
}
}
func benchmarkPacketIDStoragePush(b *testing.B, storSize uint, testName string) {
stor := newPacketIDStorage(storSize)
s := make([]uint64, b.N)
switch testName {
case "forward":
for idx := 0; idx < b.N; idx++ {
s[idx] = uint64(idx)
}
case "backward":
for idx := 0; idx < b.N; {
blockSize := min(int(storSize), b.N-idx)
for i := 0; i < blockSize; i++ {
s[idx+blockSize-i-1] = uint64(idx)
}
idx += int(storSize)
}
case "randomValid":
for idx := 0; idx < b.N; idx++ {
s[idx] = uint64(idx)
}
for idx := 0; idx < b.N; idx += int(storSize) {
blockSize := min(int(storSize), b.N-idx)
rand.Shuffle(blockSize, func(i, j int) {
s[idx+i], s[idx+j] = s[idx+j], s[idx+i]
})
}
case "invalid":
s[0] = uint64(storSize + 1)
}
b.ResetTimer()
for idx := 0; idx < b.N; idx++ {
stor.Push(s[idx])
}
}
func BenchmarkPacketIDStorage_Push(b *testing.B) {
for _, testName := range []string{"forward", "backward", "randomValid", "invalid"} {
b.Run(testName, func(b *testing.B) {
for _, storSize := range []uint{0, 64, 128, 256, 512, 1024, 1024 * 4, 1024 * 16, 1024 * 64, 1024 * 256, 1024 * 1024} {
if storSize == 0 && testName != "forward" {
continue
}
b.Run(fmt.Sprintf("storSize%d", storSize), func(b *testing.B) {
benchmarkPacketIDStoragePush(b, storSize, testName)
})
}
})
}
}