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|
package expr
import (
"encoding/binary"
"reflect"
"testing"
"github.com/mdlayher/netlink"
"golang.org/x/sys/unix"
)
func TestBitwise(t *testing.T) {
t.Parallel()
tests := []struct {
name string
bw Bitwise
}{
{
name: "Unmarshal Bitwise IPv4 case",
bw: Bitwise{
SourceRegister: 1,
DestRegister: 2,
Len: 4,
// By specifying Xor to 0x0,0x0,0x0,0x0 and Mask to 0xff,0xff,0x0,0x0
// an expression will match /16 IPv4 address.
Xor: []byte{0x0, 0x0, 0x0, 0x0},
Mask: []byte{0xff, 0xff, 0x0, 0x0},
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
nbw := Bitwise{}
data, err := tt.bw.marshal(0 /* don't care in this test */)
if err != nil {
t.Fatalf("marshal error: %+v", err)
}
ad, err := netlink.NewAttributeDecoder(data)
if err != nil {
t.Fatalf("NewAttributeDecoder() error: %+v", err)
}
ad.ByteOrder = binary.BigEndian
for ad.Next() {
if ad.Type() == unix.NFTA_EXPR_DATA {
if err := nbw.unmarshal(0, ad.Bytes()); err != nil {
t.Errorf("unmarshal error: %+v", err)
break
}
}
}
if !reflect.DeepEqual(tt.bw, nbw) {
t.Fatalf("original %+v and recovered %+v Bitwise structs are different", tt.bw, nbw)
}
})
}
}
|
