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|
package dhcpv6
import (
"errors"
"fmt"
"net"
"reflect"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/insomniacslk/dhcp/iana"
"github.com/stretchr/testify/require"
"github.com/u-root/uio/uio"
)
func TestServerIDParseAndGetter(t *testing.T) {
for i, tt := range []struct {
buf []byte
err error
want DUID
}{
{
buf: []byte{
0, 2, // Server ID option
0, 10, // length
0, 3, // DUID_LL
0, 1, // hwtype ethernet
0, 1, 2, 3, 4, 5, // HW addr
},
want: &DUIDLL{HWType: iana.HWTypeEthernet, LinkLayerAddr: net.HardwareAddr{0, 1, 2, 3, 4, 5}},
},
{
buf: nil,
want: nil,
},
{
buf: []byte{0, 1, 0, 1, 0},
want: nil,
err: uio.ErrBufferTooShort,
},
} {
t.Run(fmt.Sprintf("%d", i), func(t *testing.T) {
var mo MessageOptions
if err := mo.FromBytes(tt.buf); !errors.Is(err, tt.err) {
t.Errorf("FromBytes = %v, want %v", err, tt.err)
}
if got := mo.ServerID(); !reflect.DeepEqual(got, tt.want) {
t.Errorf("ServerID = %v, want %v", got, tt.want)
}
})
}
}
func TestServerID(t *testing.T) {
for i, tt := range []struct {
buf []byte
want optServerID
err error
}{
{
buf: []byte{
0, 3, // DUID_LL
0, 1, // hwtype ethernet
0, 1, 2, 3, 4, 5, // hw addr
},
want: optServerID{
&DUIDLL{
HWType: iana.HWTypeEthernet,
LinkLayerAddr: net.HardwareAddr([]byte{0, 1, 2, 3, 4, 5}),
},
},
},
{
buf: []byte{0},
err: uio.ErrBufferTooShort,
},
{
buf: []byte{0, 3, 0},
err: uio.ErrBufferTooShort,
},
{
buf: nil,
err: uio.ErrBufferTooShort,
},
} {
t.Run(fmt.Sprintf("%d", i), func(t *testing.T) {
var opt optServerID
if err := opt.FromBytes(tt.buf); !errors.Is(err, tt.err) {
t.Errorf("FromBytes = %v, want %v", err, tt.err)
}
if tt.err == nil {
if !reflect.DeepEqual(tt.want, opt) {
t.Errorf("FromBytes = %v, want %v", opt, tt.want)
}
out := tt.want.ToBytes()
if diff := cmp.Diff(tt.buf, out); diff != "" {
t.Errorf("ToBytes mismatch: (-want, +got):\n%s", diff)
}
}
})
}
}
func TestOptionServerIDString(t *testing.T) {
opt := OptServerID(
&DUIDLL{
HWType: iana.HWTypeEthernet,
LinkLayerAddr: net.HardwareAddr([]byte{0xde, 0xad, 0, 0, 0xbe, 0xef}),
},
)
require.Equal(t, OptionServerID, opt.Code())
require.Contains(
t,
opt.String(),
"Server ID: DUID-LL{HWType=Ethernet HWAddr=de:ad:00:00:be:ef}",
"String() should contain the correct cid output",
)
}
|
