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package dhcpv6
import (
"net"
"testing"
"github.com/insomniacslk/dhcp/iana"
"github.com/stretchr/testify/require"
)
func TestParseOptServerId(t *testing.T) {
data := []byte{
0, 3, // DUID_LL
0, 1, // hwtype ethernet
0, 1, 2, 3, 4, 5, // hw addr
}
opt, err := ParseOptServerId(data)
require.NoError(t, err)
require.Equal(t, DUID_LL, opt.Sid.Type)
require.Equal(t, iana.HwTypeEthernet, opt.Sid.HwType)
require.Equal(t, net.HardwareAddr([]byte{0, 1, 2, 3, 4, 5}), opt.Sid.LinkLayerAddr)
}
func TestOptServerIdToBytes(t *testing.T) {
opt := OptServerId{
Sid: Duid{
Type: DUID_LL,
HwType: iana.HwTypeEthernet,
LinkLayerAddr: net.HardwareAddr([]byte{5, 4, 3, 2, 1, 0}),
},
}
expected := []byte{
0, 2, // OptionServerID
0, 10, // length
0, 3, // DUID_LL
0, 1, // hwtype ethernet
5, 4, 3, 2, 1, 0, // hw addr
}
require.Equal(t, expected, opt.ToBytes())
}
func TestOptServerIdDecodeEncode(t *testing.T) {
data := []byte{
0, 3, // DUID_LL
0, 1, // hwtype ethernet
5, 4, 3, 2, 1, 0, // hw addr
}
expected := append([]byte{
0, 2, // OptionServerID
0, 10, // length
}, data...)
opt, err := ParseOptServerId(data)
require.NoError(t, err)
require.Equal(t, expected, opt.ToBytes())
}
func TestOptionServerId(t *testing.T) {
opt := OptServerId{
Sid: Duid{
Type: DUID_LL,
HwType: iana.HwTypeEthernet,
LinkLayerAddr: net.HardwareAddr([]byte{0xde, 0xad, 0, 0, 0xbe, 0xef}),
},
}
require.Equal(t, 10, opt.Length())
require.Equal(t, OptionServerID, opt.Code())
require.Contains(
t,
opt.String(),
"sid=DUID{type=DUID-LL hwtype=Ethernet hwaddr=de:ad:00:00:be:ef}",
"String() should contain the correct sid output",
)
}
func TestOptServerIdParseOptServerIdBogusDUID(t *testing.T) {
data := []byte{
0, 4, // DUID_UUID
1, 2, 3, 4, 5, 6, 7, 8, 9, // a UUID should be 18 bytes not 17
10, 11, 12, 13, 14, 15, 16, 17,
}
_, err := ParseOptServerId(data)
require.Error(t, err, "A truncated OptServerId DUID should return an error")
}
func TestOptServerIdParseOptServerIdInvalidTooShort(t *testing.T) {
data := []byte{
0, // truncated: DUIDs are at least 2 bytes
}
_, err := ParseOptServerId(data)
require.Error(t, err, "A truncated OptServerId should return an error")
}
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