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package ethernet
import (
"bytes"
"io"
"reflect"
"testing"
)
func TestVLANMarshalBinary(t *testing.T) {
var tests = []struct {
desc string
v *VLAN
b []byte
err error
}{
{
desc: "VLAN priority too large",
v: &VLAN{
Priority: 8,
},
err: ErrInvalidVLAN,
},
{
desc: "VLAN ID too large",
v: &VLAN{
ID: 4095,
},
err: ErrInvalidVLAN,
},
{
desc: "empty VLAN",
v: &VLAN{},
b: []byte{0x00, 0x00},
},
{
desc: "VLAN: PRI 1, ID 101",
v: &VLAN{
Priority: 1,
ID: 101,
},
b: []byte{0x20, 0x65},
},
{
desc: "VLANs: PRI 0, DROP, ID 100",
v: &VLAN{
DropEligible: true,
ID: 100,
},
b: []byte{0x10, 0x64},
},
}
for _, tt := range tests {
t.Run(tt.desc, func(t *testing.T) {
b, err := tt.v.MarshalBinary()
if err != nil {
if want, got := tt.err, err; want != got {
t.Fatalf("unexpected error: %v != %v", want, got)
}
return
}
if want, got := tt.b, b; !bytes.Equal(want, got) {
t.Fatalf("unexpected VLAN bytes:\n- want: %v\n- got: %v", want, got)
}
})
}
}
func TestVLANUnmarshalBinary(t *testing.T) {
var tests = []struct {
desc string
b []byte
v *VLAN
err error
}{
{
desc: "nil buffer",
err: io.ErrUnexpectedEOF,
},
{
desc: "short buffer",
b: []byte{0},
err: io.ErrUnexpectedEOF,
},
{
desc: "VLAN ID too large",
b: []byte{0xff, 0xff},
err: ErrInvalidVLAN,
},
{
desc: "VLAN: PRI 1, ID 101",
b: []byte{0x20, 0x65},
v: &VLAN{
Priority: 1,
ID: 101,
},
},
{
desc: "VLAN: PRI 0, DROP, ID 100",
b: []byte{0x10, 0x64},
v: &VLAN{
DropEligible: true,
ID: 100,
},
},
}
for _, tt := range tests {
t.Run(tt.desc, func(t *testing.T) {
v := new(VLAN)
if err := v.UnmarshalBinary(tt.b); err != nil {
if want, got := tt.err, err; want != got {
t.Fatalf("unexpected error: %v != %v", want, got)
}
return
}
if want, got := tt.v, v; !reflect.DeepEqual(want, got) {
t.Fatalf("unexpected VLAN:\n- want: %v\n- got: %v", want, got)
}
})
}
}
// Benchmarks for VLAN.MarshalBinary
func BenchmarkVLANMarshalBinary(b *testing.B) {
v := &VLAN{
Priority: PriorityBackground,
ID: 10,
}
b.ResetTimer()
b.ReportAllocs()
for i := 0; i < b.N; i++ {
if _, err := v.MarshalBinary(); err != nil {
b.Fatal(err)
}
}
}
// Benchmarks for VLAN.UnmarshalBinary
func BenchmarkVLANUnmarshalBinary(b *testing.B) {
v := &VLAN{
Priority: PriorityBestEffort,
ID: 20,
}
vb, err := v.MarshalBinary()
if err != nil {
b.Fatal(err)
}
b.ResetTimer()
b.ReportAllocs()
for i := 0; i < b.N; i++ {
if err := v.UnmarshalBinary(vb); err != nil {
b.Fatal(err)
}
}
}
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