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etherconn_test.go
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etherconn_test.go
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// etherconn_test
/*
Test setup reuqirements:
- two interfaces name specified by argument testifA and testifB, these two interfaces are connected together
*/
package etherconn_test
import (
"bytes"
"context"
"crypto/rand"
"fmt"
mathrand "math/rand"
"net"
"runtime"
"testing"
"time"
"github.com/hujun-open/etherconn"
"github.com/google/gopacket"
"github.com/google/gopacket/layers"
"github.com/hujun-open/myaddr"
)
type testEtherConnEndpoint struct {
mac net.HardwareAddr
vlans []*etherconn.VLAN
ETypes []uint16
defaultConn bool
defaultConnMirror bool
dstMACFlag int
recvMulticast bool
filter string
}
type testEtherConnSingleCase struct {
A testEtherConnEndpoint
B testEtherConnEndpoint
C testEtherConnEndpoint //used only in testing default mirroring
shouldFail bool
}
type testRUDPConnSingleCase struct {
AEther testEtherConnEndpoint
BEther testEtherConnEndpoint
AIP net.IP
APort int
BIP net.IP
BPort int
shouldFail bool
}
// testGenDummyIPbytes return a dummy IP packet slice
func testGenDummyIPbytes(length int, v4 bool) []byte {
payload := make([]byte, length)
rand.Read(payload)
buf := gopacket.NewSerializeBuffer()
var iplayer gopacket.SerializableLayer
udplayer := &layers.UDP{
SrcPort: layers.UDPPort(3333),
DstPort: layers.UDPPort(4444),
}
if v4 {
srcip := make([]byte, 4)
rand.Read(srcip)
dstip := make([]byte, 4)
rand.Read(dstip)
iplayer = &layers.IPv4{
Version: 4,
SrcIP: net.IP(srcip),
DstIP: net.IP(dstip),
Protocol: layers.IPProtocol(17),
TTL: 16,
}
udplayer.SetNetworkLayerForChecksum(iplayer.(*layers.IPv4))
} else {
srcip := make([]byte, 16)
rand.Read(srcip)
dstip := make([]byte, 16)
rand.Read(dstip)
iplayer = &layers.IPv6{
Version: 6,
SrcIP: net.IP(srcip),
DstIP: net.IP(dstip),
NextHeader: layers.IPProtocol(17),
HopLimit: 16,
}
udplayer.SetNetworkLayerForChecksum(iplayer.(*layers.IPv6))
}
opts := gopacket.SerializeOptions{FixLengths: true, ComputeChecksums: true}
gopacket.SerializeLayers(buf, opts,
iplayer,
udplayer,
gopacket.Payload(payload))
return buf.Bytes()
}
const (
macTestCorrect = iota
macTestBD
macTestWrong
)
// checkEP check if rep matches with ec
func checkEP(rep *etherconn.L2Endpoint, ec *etherconn.EtherConn) error {
ecaddr := ec.LocalAddr()
if rep.HwAddr.String() != ecaddr.HwAddr.String() {
return fmt.Errorf("ep mac addr %v is different from econn's mac %v",
rep.HwAddr.String(), ecaddr.HwAddr.String())
}
if fmt.Sprintf("%X", rep.VLANs) != fmt.Sprintf("%X", ecaddr.VLANs) {
return fmt.Errorf("ep vlan %v is different from econn's vlan %v",
rep.VLANs, ecaddr.VLANs)
}
found := false
for _, et := range ec.GetEtherTypes() {
if et == rep.Etype {
found = true
break
}
}
if !found {
return fmt.Errorf("ep ethertype %d is not in econn's list %v", rep.Etype, ec.GetEtherTypes())
}
return nil
}
func TestEtherConn(t *testing.T) {
testCaseList := []testEtherConnSingleCase{
//0 good case, no Q
{
A: testEtherConnEndpoint{
mac: net.HardwareAddr{0x14, 0x11, 0x11, 0x11, 0x11, 0x1},
vlans: []*etherconn.VLAN{},
},
B: testEtherConnEndpoint{
mac: net.HardwareAddr{0x14, 0x11, 0x11, 0x11, 0x11, 0x2},
vlans: []*etherconn.VLAN{},
},
},
//1 good case, dot1q
{
A: testEtherConnEndpoint{
mac: net.HardwareAddr{0x14, 0x11, 0x11, 0x11, 0x11, 0x1},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
},
B: testEtherConnEndpoint{
mac: net.HardwareAddr{0x14, 0x11, 0x11, 0x11, 0x11, 0x2},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
},
},
//2 good case, qinq
{
A: testEtherConnEndpoint{
mac: net.HardwareAddr{0x14, 0x11, 0x11, 0x11, 0x11, 0x1},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
{
ID: 222,
EtherType: 0x8100,
},
},
},
B: testEtherConnEndpoint{
mac: net.HardwareAddr{0x14, 0x11, 0x11, 0x11, 0x11, 0x2},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
{
ID: 222,
EtherType: 0x8100,
},
},
},
},
//3 negtive case, blocked by filter
{
A: testEtherConnEndpoint{
mac: net.HardwareAddr{0x14, 0x11, 0x11, 0x11, 0x11, 0x1},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
{
ID: 222,
EtherType: 0x8100,
},
},
},
B: testEtherConnEndpoint{
mac: net.HardwareAddr{0x14, 0x11, 0x11, 0x11, 0x11, 0x2},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
{
ID: 222,
EtherType: 0x8100,
},
},
filter: "vlan 333",
},
shouldFail: true,
},
//4 negative case, different vlan
{
A: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x1},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
},
B: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x2},
vlans: []*etherconn.VLAN{
{
ID: 101,
EtherType: 0x8100,
},
},
},
shouldFail: true,
},
//5 negative case, wrong mac
{
A: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x1},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
dstMACFlag: macTestWrong,
},
B: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x2},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
},
shouldFail: true,
},
//6 send to broadcast good case, even recv has wrong vlan id
{
A: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x1},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
dstMACFlag: macTestBD,
},
B: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x2},
vlans: []*etherconn.VLAN{
{
ID: 101,
EtherType: 0x8100,
},
},
recvMulticast: true,
},
shouldFail: false,
},
//7 send to broadcast negative case, recv doesn't accept multicast
{
A: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x1},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
dstMACFlag: macTestBD,
},
B: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x2},
vlans: []*etherconn.VLAN{
{
ID: 101,
EtherType: 0x8100,
},
},
recvMulticast: false,
},
shouldFail: true,
},
//8 default receive case, no mirroring, no matching vlan&mac
{
A: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x1},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
dstMACFlag: macTestWrong,
},
B: testEtherConnEndpoint{
defaultConn: true,
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x2},
vlans: []*etherconn.VLAN{
{
ID: 101,
EtherType: 0x8100,
},
},
recvMulticast: false,
},
},
//default receive case, mirroring, no matching vlan&mac
{
A: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x1},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
dstMACFlag: macTestCorrect,
},
B: testEtherConnEndpoint{
defaultConn: true,
ETypes: []uint16{1},
defaultConnMirror: true,
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x2},
vlans: []*etherconn.VLAN{
{
ID: 101,
EtherType: 0x8100,
},
},
recvMulticast: false,
},
C: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x2},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
recvMulticast: false,
},
},
//negative case, default receive case, no mirroring, no matching vlan&mac
{
A: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x1},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
dstMACFlag: macTestCorrect,
},
B: testEtherConnEndpoint{
defaultConn: true,
ETypes: []uint16{1},
defaultConnMirror: false,
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x2},
vlans: []*etherconn.VLAN{
{
ID: 101,
EtherType: 0x8100,
},
},
recvMulticast: false,
},
C: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x2},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
recvMulticast: false,
},
shouldFail: true,
},
//negative case, ethertypes not allowed
{
A: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x1},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
dstMACFlag: macTestCorrect,
},
B: testEtherConnEndpoint{
ETypes: []uint16{0x1},
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x2},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
recvMulticast: false,
},
shouldFail: true,
},
}
testFunc := func(c testEtherConnSingleCase, relayType etherconn.RelayType) error {
err := testCreateVETHLink(testifA, testifB)
if err != nil {
return err
}
// filterstr := "udp or (vlan and udp)"
filterstr := ""
switch relayType {
case etherconn.RelayTypeAFP:
filterstr = "udp or (vlan and udp)"
case etherconn.RelayTypePCAP:
if runtime.GOOS == "linux" {
filterstr = "(udp) or (vlan and vlan and udp) or (vlan and udp)"
}
}
if c.A.filter != "" {
filterstr = c.A.filter
}
mods := []etherconn.RelayOption{
etherconn.WithDebug(true),
etherconn.WithBPFFilter(filterstr),
}
if c.A.defaultConn {
mods = append(mods, etherconn.WithDefaultReceival(c.A.defaultConnMirror))
}
var peerA, peerB *etherconn.RawSocketRelay
peerA, err = getRawRelay(context.Background(), relayType, testifA, mods...)
// switch relayType {
// case etherconn.RawRelayTypePCAP:
// peerA, err = etherconn.NewRawSocketRelayPcap(context.Background(), testifA, mods...)
// case etherconn.RawRelayTypeAFP:
// peerA, err = etherconn.NewRawSocketRelay(context.Background(), testifA, mods...)
// }
if err != nil {
return err
}
defer peerA.Stop()
filterstr = ""
switch relayType {
case etherconn.RelayTypeAFP:
filterstr = "udp or (vlan and udp)"
case etherconn.RelayTypePCAP:
if runtime.GOOS == "linux" {
filterstr = "(udp) or (vlan and vlan and udp) or (vlan and udp)"
}
}
if c.B.filter != "" {
filterstr = c.B.filter
}
mods = []etherconn.RelayOption{
etherconn.WithDebug(true),
etherconn.WithBPFFilter(filterstr),
}
if c.B.defaultConn {
mods = append(mods, etherconn.WithDefaultReceival(c.B.defaultConnMirror))
}
peerB, err = getRawRelay(context.Background(), relayType, testifB, mods...)
// switch relayType {
// case etherconn.RawRelayTypePCAP:
// peerB, err = etherconn.NewRawSocketRelayPcap(context.Background(), testifB, mods...)
// case etherconn.RawRelayTypeAFP:
// peerB, err = etherconn.NewRawSocketRelay(context.Background(), testifB, mods...)
// }
if err != nil {
return err
}
defer peerB.Stop()
emods := []etherconn.EtherConnOption{
etherconn.WithVLANs(c.A.vlans),
}
if len(c.A.ETypes) == 0 {
emods = append(emods, etherconn.WithEtherTypes(etherconn.DefaultEtherTypes))
} else {
emods = append(emods, etherconn.WithEtherTypes(c.A.ETypes))
}
if c.A.defaultConn {
emods = append(emods, etherconn.WithDefault())
}
econnA := etherconn.NewEtherConn(c.A.mac, peerA, emods...)
defer econnA.Close()
emods = []etherconn.EtherConnOption{
etherconn.WithVLANs(c.B.vlans),
etherconn.WithRecvMulticast(c.B.recvMulticast),
}
if len(c.B.ETypes) == 0 {
emods = append(emods, etherconn.WithEtherTypes(etherconn.DefaultEtherTypes))
} else {
emods = append(emods, etherconn.WithEtherTypes(c.B.ETypes))
}
if c.B.defaultConn {
emods = append(emods, etherconn.WithDefault())
}
econnB := etherconn.NewEtherConn(c.B.mac, peerB, emods...)
defer econnB.Close()
if len(c.C.mac) > 0 {
t.Logf("create endpoint C")
emods = []etherconn.EtherConnOption{
etherconn.WithVLANs(c.C.vlans),
etherconn.WithRecvMulticast(c.C.recvMulticast),
}
if len(c.C.ETypes) == 0 {
emods = append(emods, etherconn.WithEtherTypes(etherconn.DefaultEtherTypes))
} else {
emods = append(emods, etherconn.WithEtherTypes(c.C.ETypes))
}
if c.C.defaultConn {
emods = append(emods, etherconn.WithDefault())
}
econnC := etherconn.NewEtherConn(c.C.mac, peerB, emods...)
defer econnC.Close()
}
maxSize := 1000
for i := 0; i < 10; i++ {
fmt.Printf("send pkt %d\n", i)
pktSize := maxSize - mathrand.Intn(maxSize-63)
p := testGenDummyIPbytes(pktSize, i%2 == 0)
var dst net.HardwareAddr
switch c.A.dstMACFlag {
case macTestCorrect:
dst = c.B.mac
case macTestBD:
dst = etherconn.BroadCastMAC
default:
dst = net.HardwareAddr{0, 0, 0, 0, 0, 0}
}
fmt.Printf("send packet with length %d to %v\n content %v\n", len(p), dst, p)
_, err := econnA.WriteIPPktTo(p, dst)
if err != nil {
return err
}
rcvdbuf := make([]byte, maxSize+100)
//set read timeout
err = econnB.SetReadDeadline(time.Now().Add(10 * time.Second))
if err != nil {
return err
}
good := false
for i := 0; i < 6; i++ {
n, rep, err := econnB.ReadPktFrom(rcvdbuf)
if err != nil {
return err
}
if !bytes.Equal(p, rcvdbuf[:n]) {
if !c.B.defaultConn {
return fmt.Errorf("recvied bytes is different from sent for pkt %d, sent %v, recv %v", i, p, rcvdbuf[:n])
}
} else {
if cerr := checkEP(rep, econnA); cerr != nil {
return cerr
}
fmt.Printf("recved a good pkt\n")
good = true
break
}
}
if !good {
return fmt.Errorf("didn't get expected packet")
}
}
return nil
}
for i, c := range testCaseList {
// if i != 2 {
// continue
// }
rtlist := []etherconn.RelayType{etherconn.RelayTypeAFP, etherconn.RelayTypePCAP}
if runtime.GOOS == "windows" {
rtlist = []etherconn.RelayType{etherconn.RelayTypePCAP}
}
for _, rtype := range rtlist {
t.Logf("TestEtherConn: run case %d with %v", i, rtype)
err := testFunc(c, rtype)
if err != nil {
if c.shouldFail {
fmt.Printf("case %d failed as expected,%v\n", i, err)
} else {
t.Fatalf("case %d failed,%v", i, err)
}
} else {
if c.shouldFail {
t.Fatalf("case %d succeed but should fail", i)
}
}
}
}
}
func TestRUDPConn(t *testing.T) {
testCaseList := []testRUDPConnSingleCase{
{
AEther: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x1},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
},
BEther: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x2},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
},
AIP: net.ParseIP("1.1.1.1"),
BIP: net.ParseIP("1.1.1.100"),
APort: 1999,
BPort: 2999,
},
{
AEther: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x1},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
},
BEther: testEtherConnEndpoint{
mac: net.HardwareAddr{0x12, 0x11, 0x11, 0x11, 0x11, 0x2},
vlans: []*etherconn.VLAN{
{
ID: 100,
EtherType: 0x8100,
},
},
},
AIP: net.ParseIP("2001:dead::1"),
BIP: net.ParseIP("2001:beef::1"),
APort: 1999,
BPort: 2999,
},
}
testFunc := func(c testRUDPConnSingleCase, relayType etherconn.RelayType) error {
err := testCreateVETHLink(testifA, testifB)
if err != nil {
return err
}
peerA, err := getRawRelay(context.Background(), relayType, testifA,
etherconn.WithDebug(true))
// peerA, err := etherconn.NewRawSocketRelay(context.Background(), testifA,
// etherconn.WithDebug(true))
if err != nil {
return err
}
defer peerA.Stop()
peerB, err := getRawRelay(context.Background(), relayType, testifB,
etherconn.WithDebug(true))
// peerB, err := etherconn.NewRawSocketRelay(context.Background(), testifB,
// etherconn.WithDebug(true))
if err != nil {
return err
}
defer peerB.Stop()
resolvMacFunc := func(net.IP) net.HardwareAddr {
switch c.AEther.dstMACFlag {
case macTestCorrect:
return c.BEther.mac
case macTestBD:
return etherconn.BroadCastMAC
default:
return net.HardwareAddr{0, 0, 0, 0, 0, 0}
}
}
econnA := etherconn.NewEtherConn(c.AEther.mac, peerA, etherconn.WithVLANs(c.AEther.vlans))
econnB := etherconn.NewEtherConn(c.BEther.mac, peerB, etherconn.WithVLANs(c.BEther.vlans),
etherconn.WithRecvMulticast(c.BEther.recvMulticast))
rudpA, err := etherconn.NewRUDPConn(myaddr.GenConnectionAddrStr("", c.AIP, c.APort), econnA,
etherconn.WithResolveNextHopMacFunc(resolvMacFunc))
if err != nil {
return err
}
rudpB, err := etherconn.NewRUDPConn(myaddr.GenConnectionAddrStr("", c.BIP, c.BPort), econnB)
if err != nil {
return err
}
maxSize := 1000
for i := 0; i < 10; i++ {
p := testGenDummyIPbytes(maxSize-mathrand.Intn(maxSize-100), true)
fmt.Printf("send packet with length %d\n", len(p))
_, err := rudpA.WriteTo(p, &net.UDPAddr{IP: c.BIP, Zone: "udp", Port: c.BPort})
if err != nil {
return err
}
rcvdbuf := make([]byte, maxSize+100)
//set read timeout
err = rudpB.SetReadDeadline(time.Now().Add(time.Second))
if err != nil {
return err
}
n, _, err := rudpB.ReadFrom(rcvdbuf)
if err != nil {
return err
}
if !bytes.Equal(p, rcvdbuf[:n]) {
return fmt.Errorf("recvied bytes is different from sent")
}
}
return nil
}
for i, c := range testCaseList {
rtlist := []etherconn.RelayType{etherconn.RelayTypeAFP, etherconn.RelayTypePCAP}
if runtime.GOOS == "windows" {
rtlist = []etherconn.RelayType{etherconn.RelayTypePCAP}
}
for _, rtype := range rtlist {
t.Logf("runing case %d with %v", i, rtype)
err := testFunc(c, rtype)
if err != nil {
if c.shouldFail {
fmt.Printf("case %d failed as expected,%v\n", i, err)
} else {
t.Fatalf("case %d failed,%v", i, err)
}
} else {
if c.shouldFail {
t.Fatalf("case %d succeed but should fail", i)
}
}
}
}
}
// v is the orignal value, vs is the orignal string
// newIDs is the value for SetIDs, newv is the new VLANs after setIDs
type testVLANsCase struct {
v etherconn.VLANs
vbs []byte
vs string
umvs string
newIDs []uint16
newv etherconn.VLANs
shouldFail bool
}
func TestVLANs(t *testing.T) {
testCaseList := []testVLANsCase{
{
v: etherconn.VLANs{
ðerconn.VLAN{
ID: 300,
EtherType: 0x8100,
},
},
vs: "|300",
vbs: []byte{0x1, 0x2c, 0x81, 0},
newIDs: []uint16{111},
newv: etherconn.VLANs{
ðerconn.VLAN{
ID: 111,
EtherType: 0x8100,
},
},
},
{
v: etherconn.VLANs{
ðerconn.VLAN{
ID: 300,
EtherType: 0x8100,
},
},
vs: "|300",
umvs: ".300",
newIDs: []uint16{111},
newv: etherconn.VLANs{
ðerconn.VLAN{
ID: 111,
EtherType: 0x8100,
},
},
},
{
v: etherconn.VLANs{
ðerconn.VLAN{
ID: 300,
EtherType: 0x8100,
},
},
vs: "|300",
umvs: "300",
newIDs: []uint16{111},
newv: etherconn.VLANs{
ðerconn.VLAN{
ID: 111,
EtherType: 0x8100,
},
},
},
{
v: etherconn.VLANs{
ðerconn.VLAN{
ID: 100,
EtherType: 0x8100,
},
ðerconn.VLAN{
ID: 200,
EtherType: 0x8200,
},
},
vs: "|100|200",
umvs: "100.200",
newIDs: []uint16{111, 222},
newv: etherconn.VLANs{
ðerconn.VLAN{
ID: 111,
EtherType: 0x8100,
},
ðerconn.VLAN{
ID: 222,
EtherType: 0x8200,
},
},
},
{
v: etherconn.VLANs{
ðerconn.VLAN{
ID: 100,
EtherType: 0x8100,
},
ðerconn.VLAN{
ID: 200,
EtherType: 0x8200,
},
},
vbs: []byte{0, 100, 0x81, 0, 0, 200, 0x82, 0},
vs: "|100|200",
umvs: "100|200",
newIDs: []uint16{111, 222},
newv: etherconn.VLANs{
ðerconn.VLAN{
ID: 111,
EtherType: 0x8100,
},
ðerconn.VLAN{
ID: 222,
EtherType: 0x8200,
},
},
},
{
shouldFail: true,
v: etherconn.VLANs{
ðerconn.VLAN{
ID: 100,
EtherType: 0x8100,
},
ðerconn.VLAN{
ID: 200,
EtherType: 0x8200,
},
},
vbs: []byte{0, 100, 0x81, 0, 0, 200, 0x82},
vs: "|100|200",
umvs: "100|200",
newIDs: []uint16{111, 222},
newv: etherconn.VLANs{
ðerconn.VLAN{
ID: 111,
EtherType: 0x8100,
},
ðerconn.VLAN{
ID: 222,
EtherType: 0x8200,
},
},
},
{
v: etherconn.VLANs{
ðerconn.VLAN{
ID: 100,
EtherType: 0x8100,
},
ðerconn.VLAN{
ID: 200,
EtherType: 0x8200,
},
},
vs: "|100|200",
newIDs: []uint16{111, 222},
newv: etherconn.VLANs{
ðerconn.VLAN{
ID: 111,
EtherType: 0x8100,
},
ðerconn.VLAN{
ID: 220,
EtherType: 0x8200,
},
},
shouldFail: true,
},
{
v: etherconn.VLANs{},
vs: "",
newIDs: []uint16{},
newv: etherconn.VLANs{},
shouldFail: false,
},
}
testFunc := func(c testVLANsCase) error {
if len(c.vbs) != 0 {
buf, err := c.v.MarshalBinary()
if err != nil {
return err
}
if !bytes.Equal(buf, c.vbs) {
return fmt.Errorf("%v marshalbinary result %v is different from expected %v", c.v, buf, c.vbs)
}
newv := new(etherconn.VLANs)
err = newv.UnmarshalBinary(buf)
if err != nil {
return err
}
if !newv.Equal(c.v) {
return fmt.Errorf("%v unmarshalbinary result %v is different", c.v, newv)
}
}
if c.v.String() != c.vs {
return fmt.Errorf("c.v string %v is different from expected %v", c.v.String(), c.vs)
}
ustr := c.vs
if c.umvs != "" {
ustr = c.umvs
}
newvlan := new(etherconn.VLANs)
if err := newvlan.UnmarshalText([]byte(ustr)); err != nil {
return fmt.Errorf("failed to unmarshal %v, %w", c.vs, err)
}
if newvlan.String() != c.v.String() {
return fmt.Errorf("unmarshaled vlan %v is different from expected %v", newvlan.String(), c.v.String())
}
err := c.v.SetIDs(c.newIDs)
if err != nil {
return err
}
if !c.newv.Equal(c.v) {