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package dhcpv6
import (
"errors"
"fmt"
"net"
"reflect"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/stretchr/testify/require"
"github.com/u-root/uio/uio"
)
func TestDHCP4oDHCP6ParseAndGetter(t *testing.T) {
for i, tt := range []struct {
buf []byte
err error
want *OptDHCP4oDHCP6Server
}{
{
buf: []byte{
0, 88, // DHCP4oDHCP6 option.
0, 32, // length
0x2a, 0x03, 0x28, 0x80, 0xff, 0xfe, 0x00, 0x0c, 0xfa, 0xce, 0xb0, 0x0c, 0x00, 0x00, 0x00, 0x35,
0x2a, 0x03, 0x28, 0x80, 0xff, 0xfe, 0x00, 0x0c, 0xfa, 0xce, 0xb0, 0x0c, 0x00, 0x00, 0x00, 0x35,
},
want: &OptDHCP4oDHCP6Server{
DHCP4oDHCP6Servers: []net.IP{
net.IP{0x2a, 0x03, 0x28, 0x80, 0xff, 0xfe, 0x00, 0x0c, 0xfa, 0xce, 0xb0, 0x0c, 0x00, 0x00, 0x00, 0x35},
net.IP{0x2a, 0x03, 0x28, 0x80, 0xff, 0xfe, 0x00, 0x0c, 0xfa, 0xce, 0xb0, 0x0c, 0x00, 0x00, 0x00, 0x35},
},
},
},
{
buf: []byte{
0, 88, // DHCP4oDHCP6 option.
0, 6, // length
0x2a, 0x03, 0x28, 0x80, 0xff, 0xfe,
},
err: uio.ErrUnreadBytes,
},
{
buf: []byte{
0, 88, // DHCP4oDHCP6 option.
0, 0, // length
},
want: &OptDHCP4oDHCP6Server{},
},
{
buf: []byte{0, 88, 0},
want: nil,
err: uio.ErrUnreadBytes,
},
} {
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.DHCP4oDHCP6Server(); !reflect.DeepEqual(got, tt.want) {
t.Errorf("DHCP4oDHCP6Server = %v, want %v", got, tt.want)
}
if tt.want != nil {
var m MessageOptions
m.Add(tt.want)
got := m.ToBytes()
if diff := cmp.Diff(tt.buf, got); diff != "" {
t.Errorf("ToBytes mismatch (-want, +got): %s", diff)
}
}
})
}
}
func TestParseOptDHCP4oDHCP6Server(t *testing.T) {
opt := OptDHCP4oDHCP6Server{DHCP4oDHCP6Servers: []net.IP{net.ParseIP("2a03:2880:fffe:c:face:b00c:0:35")}}
require.Contains(t, opt.String(), "[2a03:2880:fffe:c:face:b00c:0:35]", "String() should contain the correct DHCP4-over-DHCP6 server output")
}
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