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neigh_test.go
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neigh_test.go
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package rtnetlink
import (
"bytes"
"net"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/jsimonetti/rtnetlink/v2/internal/unix"
)
// Tests will only pass on little endian machines
func TestNeighMessageMarshalBinary(t *testing.T) {
skipBigEndian(t)
tests := []struct {
name string
m Message
b []byte
err error
}{
{
name: "empty",
m: &NeighMessage{},
b: []byte{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
},
},
{
name: "no attributes",
m: &NeighMessage{
Index: 2,
State: 64,
Type: unix.NTF_PROXY,
},
b: []byte{
0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
0x40, 0x00, 0x00, 0x08,
},
},
{
name: "attributes",
m: &NeighMessage{
Index: 2,
State: 64,
Type: unix.NTF_PROXY,
Attributes: &NeighAttributes{
Address: net.ParseIP("10.0.0.0"),
LLAddress: []byte{0x33, 0x33, 0x00, 0x00, 0x00, 0x16},
IfIndex: 0,
CacheInfo: &NeighCacheInfo{},
},
},
b: []byte{
0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
0x40, 0x00, 0x00, 0x08, 0x06, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x01, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xff, 0xff, 0x0a, 0x00, 0x00, 0x00,
0x0a, 0x00, 0x02, 0x00, 0x33, 0x33, 0x00, 0x00,
0x00, 0x16, 0x00, 0x00, 0x08, 0x00, 0x08, 0x00,
0x00, 0x00, 0x00, 0x00,
},
},
{
name: "infiniband LL address",
m: &NeighMessage{
Index: 2,
State: 64,
Type: unix.NTF_PROXY,
Attributes: &NeighAttributes{
LLAddress: []byte{0x0, 0x0, 0x0, 0x0, 0xfe, 0x80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x02, 0x0, 0x5e, 0x10, 0x0, 0x0, 0x0, 0x01},
},
},
b: []byte{
0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
0x40, 0x00, 0x00, 0x08, 0x06, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x01, 0x00,
0x18, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x02, 0x00, 0x5e, 0x10, 0x00, 0x00, 0x00, 0x01,
0x08, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
},
},
{
name: "EUI-64 LL",
m: &NeighMessage{
Index: 2,
State: 64,
Type: unix.NTF_PROXY,
Attributes: &NeighAttributes{
LLAddress: []byte{0x0, 0x0, 0x0, 0x0, 0xfe, 0x80, 0x0, 0xd},
},
},
b: []byte{
0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
0x40, 0x00, 0x00, 0x08, 0x06, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x01, 0x00,
0x0c, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
0xfe, 0x80, 0x00, 0x0d, 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 want, got := tt.b, b; !bytes.Equal(want, got) {
t.Fatalf("unexpected Message bytes:\n- want: [%# x]\n- got: [%# x]", want, got)
}
})
}
}
func TestNeighMessageUnmarshalBinary(t *testing.T) {
skipBigEndian(t)
tests := []struct {
name string
b []byte
m Message
a NeighAttributes
err error
}{
{
name: "empty",
err: errInvalidNeighMessage,
},
{
name: "short",
b: make([]byte, 11),
err: errInvalidNeighMessage,
},
{
name: "data",
b: []byte{
0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
0x40, 0x00, 0x00, 0x08,
},
m: &NeighMessage{
Index: 2,
State: 64,
Type: unix.NTF_PROXY,
},
},
{
name: "Empty LLAddr",
b: []byte{
0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
0x40, 0x00, 0x00, 0x08, 0x06, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x01, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0xff, 0xff, 0x0a, 0x00, 0x00, 0x01,
0x04, 0x00, 0x02, 0x00, 0x08, 0x00, 0x08, 0x00,
0x00, 0x00, 0x00, 0x00,
},
m: &NeighMessage{
Index: 2,
State: 64,
Type: unix.NTF_PROXY,
Attributes: &NeighAttributes{
Address: net.ParseIP("10.0.0.1"),
LLAddress: nil,
},
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
m := &NeighMessage{}
err := (m).UnmarshalBinary(tt.b)
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.m, m); diff != "" {
t.Fatalf("unexpected Message: %s\n(-want +got):\n%s", tt.name, diff)
}
})
}
}