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package dhcpv6
import (
"bytes"
"errors"
"fmt"
"net"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/insomniacslk/dhcp/iana"
"github.com/stretchr/testify/require"
"github.com/u-root/uio/uio"
)
func TestClientLinkLayerAddressParseAndGetter(t *testing.T) {
for i, tt := range []struct {
buf []byte
err error
wantHWType iana.HWType
wantHWAddr net.HardwareAddr
}{
{
buf: []byte{
0, 79, // Client Link Layer Address option
0, 8, // length
0, 1, // Ethernet
1, 2, 3, 4, 5, 6,
},
wantHWType: iana.HWTypeEthernet,
wantHWAddr: net.HardwareAddr{1, 2, 3, 4, 5, 6},
},
{
buf: []byte{0, 79, 0, 1, 0},
err: uio.ErrBufferTooShort,
},
{
buf: []byte{0, 79, 0},
err: uio.ErrUnreadBytes,
},
} {
t.Run(fmt.Sprintf("%d", i), func(t *testing.T) {
var ro RelayOptions
if err := ro.FromBytes(tt.buf); !errors.Is(err, tt.err) {
t.Errorf("FromBytes = %v, want %v", err, tt.err)
}
if gotHWType, gotHWAddr := ro.ClientLinkLayerAddress(); gotHWType != tt.wantHWType || !bytes.Equal(gotHWAddr, tt.wantHWAddr) {
t.Errorf("ClientLinkLayerAddress = (%s, %v), want (%s, %v)", gotHWType, tt.wantHWType, gotHWAddr, tt.wantHWAddr)
}
if tt.err == nil {
var m MessageOptions
m.Add(OptClientLinkLayerAddress(tt.wantHWType, tt.wantHWAddr))
got := m.ToBytes()
if diff := cmp.Diff(tt.buf, got); diff != "" {
t.Errorf("ToBytes mismatch (-want, +got): %s", diff)
}
}
})
}
}
func TestOptClientLinkLayerAddressString(t *testing.T) {
opt := OptClientLinkLayerAddress(iana.HWTypeEthernet, net.HardwareAddr{0xa4, 0x83, 0xe7, 0xe3, 0xdf, 0x88})
require.Equal(t, "Client Link-Layer Address: Type=Ethernet LinkLayerAddress=a4:83:e7:e3:df:88", opt.String())
}
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