mirror of https://github.com/vishvananda/netlink
63 lines
1.5 KiB
Go
63 lines
1.5 KiB
Go
package nl
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import (
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"bytes"
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"crypto/rand"
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"encoding/binary"
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"reflect"
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"syscall"
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"testing"
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)
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type testSerializer interface {
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serializeSafe() []byte
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Serialize() []byte
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}
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func testDeserializeSerialize(t *testing.T, orig []byte, safemsg testSerializer, msg testSerializer) {
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if !reflect.DeepEqual(safemsg, msg) {
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t.Fatal("Deserialization failed.\n", safemsg, "\n", msg)
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}
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safe := msg.serializeSafe()
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if !bytes.Equal(safe, orig) {
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t.Fatal("Safe serialization failed.\n", safe, "\n", orig)
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}
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b := msg.Serialize()
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if !bytes.Equal(b, safe) {
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t.Fatal("Serialization failed.\n", b, "\n", safe)
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}
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}
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func (msg *IfInfomsg) write(b []byte) {
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native := NativeEndian()
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b[0] = msg.Family
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// pad byte is skipped because it is not exported on linux/s390x
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native.PutUint16(b[2:4], msg.Type)
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native.PutUint32(b[4:8], uint32(msg.Index))
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native.PutUint32(b[8:12], msg.Flags)
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native.PutUint32(b[12:16], msg.Change)
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}
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func (msg *IfInfomsg) serializeSafe() []byte {
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length := syscall.SizeofIfInfomsg
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b := make([]byte, length)
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msg.write(b)
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return b
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}
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func deserializeIfInfomsgSafe(b []byte) *IfInfomsg {
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var msg = IfInfomsg{}
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binary.Read(bytes.NewReader(b[0:syscall.SizeofIfInfomsg]), NativeEndian(), &msg)
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return &msg
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}
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func TestIfInfomsgDeserializeSerialize(t *testing.T) {
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var orig = make([]byte, syscall.SizeofIfInfomsg)
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rand.Read(orig)
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// zero out the pad byte
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orig[1] = 0
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safemsg := deserializeIfInfomsgSafe(orig)
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msg := DeserializeIfInfomsg(orig)
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testDeserializeSerialize(t, orig, safemsg, msg)
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}
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