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package rtnetlink
import (
"encoding/binary"
"net"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/jsimonetti/rtnetlink/v2/internal/unix"
"github.com/mdlayher/netlink/nlenc"
)
func TestAddressMessageMarshalBinary(t *testing.T) {
skipBigEndian(t)
tests := []struct {
name string
m Message
b []byte
err error
}{
{
name: "empty",
m: &AddressMessage{},
b: []byte{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
},
},
{
name: "no attributes",
m: &AddressMessage{
Family: unix.AF_INET,
PrefixLength: 8,
Scope: 0,
Index: 1,
Flags: 0,
},
b: []byte{
0x02, 0x08, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
},
},
{
name: "attributes",
m: &AddressMessage{
Attributes: &AddressAttributes{
Address: net.IPv4(192, 0, 2, 1),
Broadcast: net.IPv4(255, 255, 255, 255),
Label: "lo",
},
},
b: []byte{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0x00, 0x01, 0x00, 0xc0, 0x00, 0x02, 0x01,
0x08, 0x00, 0x04, 0x00, 0xff, 0xff, 0xff, 0xff,
0x07, 0x00, 0x03, 0x00, 0x6c, 0x6f, 0x00, 0x00,
0x08, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
},
},
{
name: "no broadcast",
m: &AddressMessage{
Attributes: &AddressAttributes{
Address: net.ParseIP("2001:db8::"),
Label: "lo",
},
},
b: []byte{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x14, 0x00, 0x01, 0x00, 0x20, 0x01, 0x0d, 0xb8,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x07, 0x00, 0x03, 0x00,
0x6c, 0x6f, 0x00, 0x00, 0x08, 0x00, 0x08, 0x00,
0x00, 0x00, 0x00, 0x00,
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
b, err := tt.m.MarshalBinary()
if want, got := tt.err, err; want != got {
t.Fatalf("unexpected error:\n- want: %v\n- got: %v", want, got)
}
if err != nil {
return
}
if diff := cmp.Diff(tt.b, b); diff != "" {
t.Fatalf("unexpected bytes (-want +got):\n%s", diff)
}
})
}
}
func TestAddressMessageUnmarshalBinary(t *testing.T) {
skipBigEndian(t)
tests := []struct {
name string
b []byte
m Message
ok bool
}{
{
name: "empty",
},
{
name: "short",
b: make([]byte, 3),
},
{
name: "invalid attr",
b: []byte{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0x00, 0x01, 0x00, 0xc0, 0x00, 0x02, 0x01,
0x08, 0x00, 0x06, 0x00, 0xff, 0xff, 0xff, 0xff,
0x08, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
},
},
{
name: "data",
b: []byte{
0x02, 0x08, 0xfe, 0x01, 0x01, 0x00, 0x00, 0x00,
0x08, 0x00, 0x01, 0x00, 0x7f, 0x00, 0x00, 0x01,
0x08, 0x00, 0x02, 0x00, 0x7f, 0x00, 0x00, 0x01,
0x07, 0x00, 0x03, 0x00, 0x6c, 0x6f, 0x00, 0x00,
0x08, 0x00, 0x08, 0x00, 0x80, 0x00, 0x00, 0x00,
0x14, 0x00, 0x06, 0x00, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0x44, 0x01, 0x00,
0x00, 0x44, 0x01, 0x00, 0x00,
},
m: &AddressMessage{
Family: 2,
PrefixLength: 8,
Flags: 0xfe,
Scope: 1,
Index: 1,
Attributes: &AddressAttributes{
Address: net.IP{0x7f, 0x0, 0x0, 0x1},
Local: net.IP{0x7f, 0x0, 0x0, 0x1},
Label: "lo",
Broadcast: net.IP(nil),
Anycast: net.IP(nil),
CacheInfo: CacheInfo{
Preferred: 0xffffffff,
Valid: 0xffffffff,
Created: 0x144,
Updated: 0x144,
},
Multicast: net.IP(nil),
Flags: 0x80,
},
},
ok: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
var m AddressMessage
err := m.UnmarshalBinary(tt.b)
if tt.ok && err != nil {
t.Fatalf("failed to unmarshal binary: %v", err)
}
if !tt.ok && err == nil {
t.Fatal("expected an error, but none occurred")
}
if err != nil {
t.Logf("err: %v", err)
return
}
if diff := cmp.Diff(tt.m, &m); diff != "" {
t.Fatalf("unexpected AddressMessage (-want +got):\n%s", diff)
}
})
}
}
func skipBigEndian(t *testing.T) {
if nlenc.NativeEndian() == binary.BigEndian {
t.Skip("skipping test on big-endian system")
}
}
|
