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package dhcpv6
import (
"bytes"
"net"
"testing"
"github.com/stretchr/testify/require"
)
func TestOptIAPrefix(t *testing.T) {
buf := []byte{
0xaa, 0xbb, 0xcc, 0xdd, // preferredLifetime
0xee, 0xff, 0x00, 0x11, // validLifetime
36, // prefixLength
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, // ipv6Prefix
0, 8, 0, 2, 0xaa, 0xbb, // options
}
opt, err := ParseOptIAPrefix(buf)
if err != nil {
t.Fatal(err)
}
if pl := opt.PreferredLifetime; pl != 0xaabbccdd {
t.Fatalf("Invalid Preferred Lifetime. Expected 0xaabbccdd, got %v", pl)
}
if vl := opt.ValidLifetime; vl != 0xeeff0011 {
t.Fatalf("Invalid Valid Lifetime. Expected 0xeeff0011, got %v", vl)
}
if pr := opt.PrefixLength(); pr != 36 {
t.Fatalf("Invalid Prefix Length. Expected 36, got %v", pr)
}
if ip := opt.IPv6Prefix(); !bytes.Equal(ip, net.IPv6loopback) {
t.Fatalf("Invalid Prefix Length. Expected %v, got %v", net.IPv6loopback, ip)
}
if opt.Length() != len(buf) {
t.Fatalf("Invalid Option Length. Expected %v, got %v", len(buf), opt.Length())
}
}
func TestOptIAPrefixToBytes(t *testing.T) {
buf := []byte{
0xaa, 0xbb, 0xcc, 0xdd, // preferredLifetime
0xee, 0xff, 0x00, 0x11, // validLifetime
36, // prefixLength
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // ipv6Prefix
0, 8, 0, 2, 0xaa, 0xbb, // options
}
expected := []byte{00, 26, 00, byte(len(buf))}
expected = append(expected, buf...)
opt := OptIAPrefix{
PreferredLifetime: 0xaabbccdd,
ValidLifetime: 0xeeff0011,
prefixLength: 36,
ipv6Prefix: net.IPv6zero,
}
opt.Options = append(opt.Options, &OptElapsedTime{ElapsedTime: 0xaabb})
toBytes := opt.ToBytes()
if !bytes.Equal(toBytes, expected) {
t.Fatalf("Invalid ToBytes result. Expected %v, got %v", expected, toBytes)
}
}
func TestOptIAPrefixParseInvalidTooShort(t *testing.T) {
buf := []byte{
0xaa, 0xbb, 0xcc, 0xdd, // preferredLifetime
0xee, 0xff, 0x00, 0x11, // validLifetime
36, // prefixLength
0, 0, 0, 0, 0, 0, 0, // truncated ipv6Prefix
}
if opt, err := ParseOptIAPrefix(buf); err == nil {
t.Fatalf("ParseOptIAPrefix: Expected error on truncated option, got %v", opt)
}
}
func TestOptIAPrefixString(t *testing.T) {
buf := []byte{
0xaa, 0xbb, 0xcc, 0xdd, // preferredLifetime
0xee, 0xff, 0x00, 0x11, // validLifetime
36, // prefixLength
0x20, 0x01, 0x0d, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // ipv6Prefix
}
opt, err := ParseOptIAPrefix(buf)
require.NoError(t, err)
str := opt.String()
require.Contains(
t, str,
"ipv6prefix=2001:db8::",
"String() should return the ipv6addr",
)
require.Contains(
t, str,
"preferredlifetime=2864434397",
"String() should return the preferredlifetime",
)
require.Contains(
t, str,
"validlifetime=4009689105",
"String() should return the validlifetime",
)
}
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