diff options
Diffstat (limited to 'pkg/tcpip/header/ndp_test.go')
| -rw-r--r-- | pkg/tcpip/header/ndp_test.go | 785 |
1 files changed, 0 insertions, 785 deletions
diff --git a/pkg/tcpip/header/ndp_test.go b/pkg/tcpip/header/ndp_test.go deleted file mode 100644 index 2c439d70c..000000000 --- a/pkg/tcpip/header/ndp_test.go +++ /dev/null @@ -1,785 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package header - -import ( - "bytes" - "testing" - "time" - - "github.com/google/go-cmp/cmp" - "gvisor.dev/gvisor/pkg/tcpip" -) - -// TestNDPNeighborSolicit tests the functions of NDPNeighborSolicit. -func TestNDPNeighborSolicit(t *testing.T) { - b := []byte{ - 0, 0, 0, 0, - 1, 2, 3, 4, - 5, 6, 7, 8, - 9, 10, 11, 12, - 13, 14, 15, 16, - } - - // Test getting the Target Address. - ns := NDPNeighborSolicit(b) - addr := tcpip.Address("\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10") - if got := ns.TargetAddress(); got != addr { - t.Errorf("got ns.TargetAddress = %s, want %s", got, addr) - } - - // Test updating the Target Address. - addr2 := tcpip.Address("\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x11") - ns.SetTargetAddress(addr2) - if got := ns.TargetAddress(); got != addr2 { - t.Errorf("got ns.TargetAddress = %s, want %s", got, addr2) - } - // Make sure the address got updated in the backing buffer. - if got := tcpip.Address(b[ndpNSTargetAddessOffset:][:IPv6AddressSize]); got != addr2 { - t.Errorf("got targetaddress buffer = %s, want %s", got, addr2) - } -} - -// TestNDPNeighborAdvert tests the functions of NDPNeighborAdvert. -func TestNDPNeighborAdvert(t *testing.T) { - b := []byte{ - 160, 0, 0, 0, - 1, 2, 3, 4, - 5, 6, 7, 8, - 9, 10, 11, 12, - 13, 14, 15, 16, - } - - // Test getting the Target Address. - na := NDPNeighborAdvert(b) - addr := tcpip.Address("\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10") - if got := na.TargetAddress(); got != addr { - t.Errorf("got TargetAddress = %s, want %s", got, addr) - } - - // Test getting the Router Flag. - if got := na.RouterFlag(); !got { - t.Errorf("got RouterFlag = false, want = true") - } - - // Test getting the Solicited Flag. - if got := na.SolicitedFlag(); got { - t.Errorf("got SolicitedFlag = true, want = false") - } - - // Test getting the Override Flag. - if got := na.OverrideFlag(); !got { - t.Errorf("got OverrideFlag = false, want = true") - } - - // Test updating the Target Address. - addr2 := tcpip.Address("\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x11") - na.SetTargetAddress(addr2) - if got := na.TargetAddress(); got != addr2 { - t.Errorf("got TargetAddress = %s, want %s", got, addr2) - } - // Make sure the address got updated in the backing buffer. - if got := tcpip.Address(b[ndpNATargetAddressOffset:][:IPv6AddressSize]); got != addr2 { - t.Errorf("got targetaddress buffer = %s, want %s", got, addr2) - } - - // Test updating the Router Flag. - na.SetRouterFlag(false) - if got := na.RouterFlag(); got { - t.Errorf("got RouterFlag = true, want = false") - } - - // Test updating the Solicited Flag. - na.SetSolicitedFlag(true) - if got := na.SolicitedFlag(); !got { - t.Errorf("got SolicitedFlag = false, want = true") - } - - // Test updating the Override Flag. - na.SetOverrideFlag(false) - if got := na.OverrideFlag(); got { - t.Errorf("got OverrideFlag = true, want = false") - } - - // Make sure flags got updated in the backing buffer. - if got := b[ndpNAFlagsOffset]; got != 64 { - t.Errorf("got flags byte = %d, want = 64") - } -} - -func TestNDPRouterAdvert(t *testing.T) { - b := []byte{ - 64, 128, 1, 2, - 3, 4, 5, 6, - 7, 8, 9, 10, - } - - ra := NDPRouterAdvert(b) - - if got := ra.CurrHopLimit(); got != 64 { - t.Errorf("got ra.CurrHopLimit = %d, want = 64", got) - } - - if got := ra.ManagedAddrConfFlag(); !got { - t.Errorf("got ManagedAddrConfFlag = false, want = true") - } - - if got := ra.OtherConfFlag(); got { - t.Errorf("got OtherConfFlag = true, want = false") - } - - if got, want := ra.RouterLifetime(), time.Second*258; got != want { - t.Errorf("got ra.RouterLifetime = %d, want = %d", got, want) - } - - if got, want := ra.ReachableTime(), time.Millisecond*50595078; got != want { - t.Errorf("got ra.ReachableTime = %d, want = %d", got, want) - } - - if got, want := ra.RetransTimer(), time.Millisecond*117967114; got != want { - t.Errorf("got ra.RetransTimer = %d, want = %d", got, want) - } -} - -// TestNDPTargetLinkLayerAddressOptionEthernetAddress tests getting the -// Ethernet address from an NDPTargetLinkLayerAddressOption. -func TestNDPTargetLinkLayerAddressOptionEthernetAddress(t *testing.T) { - tests := []struct { - name string - buf []byte - expected tcpip.LinkAddress - }{ - { - "ValidMAC", - []byte{1, 2, 3, 4, 5, 6}, - tcpip.LinkAddress("\x01\x02\x03\x04\x05\x06"), - }, - { - "TLLBodyTooShort", - []byte{1, 2, 3, 4, 5}, - tcpip.LinkAddress([]byte(nil)), - }, - { - "TLLBodyLargerThanNeeded", - []byte{1, 2, 3, 4, 5, 6, 7, 8}, - tcpip.LinkAddress("\x01\x02\x03\x04\x05\x06"), - }, - } - - for _, test := range tests { - t.Run(test.name, func(t *testing.T) { - tll := NDPTargetLinkLayerAddressOption(test.buf) - if got := tll.EthernetAddress(); got != test.expected { - t.Errorf("got tll.EthernetAddress = %s, want = %s", got, test.expected) - } - }) - } - -} - -// TestNDPTargetLinkLayerAddressOptionSerialize tests serializing a -// NDPTargetLinkLayerAddressOption. -func TestNDPTargetLinkLayerAddressOptionSerialize(t *testing.T) { - tests := []struct { - name string - buf []byte - expectedBuf []byte - addr tcpip.LinkAddress - }{ - { - "Ethernet", - make([]byte, 8), - []byte{2, 1, 1, 2, 3, 4, 5, 6}, - "\x01\x02\x03\x04\x05\x06", - }, - { - "Padding", - []byte{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, - []byte{2, 2, 1, 2, 3, 4, 5, 6, 7, 8, 0, 0, 0, 0, 0, 0}, - "\x01\x02\x03\x04\x05\x06\x07\x08", - }, - { - "Empty", - []byte{}, - []byte{}, - "", - }, - } - - for _, test := range tests { - t.Run(test.name, func(t *testing.T) { - opts := NDPOptions(test.buf) - serializer := NDPOptionsSerializer{ - NDPTargetLinkLayerAddressOption(test.addr), - } - if got, want := int(serializer.Length()), len(test.expectedBuf); got != want { - t.Fatalf("got Length = %d, want = %d", got, want) - } - opts.Serialize(serializer) - if !bytes.Equal(test.buf, test.expectedBuf) { - t.Fatalf("got b = %d, want = %d", test.buf, test.expectedBuf) - } - - it, err := opts.Iter(true) - if err != nil { - t.Fatalf("got Iter = (_, %s), want = (_, nil)", err) - } - - if len(test.expectedBuf) > 0 { - next, done, err := it.Next() - if err != nil { - t.Fatalf("got Next = (_, _, %s), want = (_, _, nil)", err) - } - if done { - t.Fatal("got Next = (_, true, _), want = (_, false, _)") - } - if got := next.Type(); got != NDPTargetLinkLayerAddressOptionType { - t.Fatalf("got Type %= %d, want = %d", got, NDPTargetLinkLayerAddressOptionType) - } - tll := next.(NDPTargetLinkLayerAddressOption) - if got, want := []byte(tll), test.expectedBuf[2:]; !bytes.Equal(got, want) { - t.Fatalf("got Next = (%x, _, _), want = (%x, _, _)", got, want) - } - - if got, want := tll.EthernetAddress(), tcpip.LinkAddress(test.expectedBuf[2:][:EthernetAddressSize]); got != want { - t.Errorf("got tll.MACAddress = %s, want = %s", got, want) - } - } - - // Iterator should not return anything else. - next, done, err := it.Next() - if err != nil { - t.Errorf("got Next = (_, _, %s), want = (_, _, nil)", err) - } - if !done { - t.Error("got Next = (_, false, _), want = (_, true, _)") - } - if next != nil { - t.Errorf("got Next = (%x, _, _), want = (nil, _, _)", next) - } - }) - } -} - -// TestNDPPrefixInformationOption tests the field getters and serialization of a -// NDPPrefixInformation. -func TestNDPPrefixInformationOption(t *testing.T) { - b := []byte{ - 43, 127, - 1, 2, 3, 4, - 5, 6, 7, 8, - 5, 5, 5, 5, - 9, 10, 11, 12, - 13, 14, 15, 16, - 17, 18, 19, 20, - 21, 22, 23, 24, - } - - targetBuf := []byte{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1} - opts := NDPOptions(targetBuf) - serializer := NDPOptionsSerializer{ - NDPPrefixInformation(b), - } - opts.Serialize(serializer) - expectedBuf := []byte{ - 3, 4, 43, 64, - 1, 2, 3, 4, - 5, 6, 7, 8, - 0, 0, 0, 0, - 9, 10, 11, 12, - 13, 14, 15, 16, - 17, 18, 19, 20, - 21, 22, 23, 24, - } - if !bytes.Equal(targetBuf, expectedBuf) { - t.Fatalf("got targetBuf = %x, want = %x", targetBuf, expectedBuf) - } - - it, err := opts.Iter(true) - if err != nil { - t.Fatalf("got Iter = (_, %s), want = (_, nil)", err) - } - - next, done, err := it.Next() - if err != nil { - t.Fatalf("got Next = (_, _, %s), want = (_, _, nil)", err) - } - if done { - t.Fatal("got Next = (_, true, _), want = (_, false, _)") - } - if got := next.Type(); got != NDPPrefixInformationType { - t.Errorf("got Type = %d, want = %d", got, NDPPrefixInformationType) - } - - pi := next.(NDPPrefixInformation) - - if got := pi.Type(); got != 3 { - t.Errorf("got Type = %d, want = 3", got) - } - - if got := pi.Length(); got != 30 { - t.Errorf("got Length = %d, want = 30", got) - } - - if got := pi.PrefixLength(); got != 43 { - t.Errorf("got PrefixLength = %d, want = 43", got) - } - - if pi.OnLinkFlag() { - t.Error("got OnLinkFlag = true, want = false") - } - - if !pi.AutonomousAddressConfigurationFlag() { - t.Error("got AutonomousAddressConfigurationFlag = false, want = true") - } - - if got, want := pi.ValidLifetime(), 16909060*time.Second; got != want { - t.Errorf("got ValidLifetime = %d, want = %d", got, want) - } - - if got, want := pi.PreferredLifetime(), 84281096*time.Second; got != want { - t.Errorf("got PreferredLifetime = %d, want = %d", got, want) - } - - if got, want := pi.Prefix(), tcpip.Address("\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18"); got != want { - t.Errorf("got Prefix = %s, want = %s", got, want) - } - - // Iterator should not return anything else. - next, done, err = it.Next() - if err != nil { - t.Errorf("got Next = (_, _, %s), want = (_, _, nil)", err) - } - if !done { - t.Error("got Next = (_, false, _), want = (_, true, _)") - } - if next != nil { - t.Errorf("got Next = (%x, _, _), want = (nil, _, _)", next) - } -} - -func TestNDPRecursiveDNSServerOptionSerialize(t *testing.T) { - b := []byte{ - 9, 8, - 1, 2, 4, 8, - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, - } - targetBuf := []byte{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1} - expected := []byte{ - 25, 3, 0, 0, - 1, 2, 4, 8, - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, - } - opts := NDPOptions(targetBuf) - serializer := NDPOptionsSerializer{ - NDPRecursiveDNSServer(b), - } - if got, want := opts.Serialize(serializer), len(expected); got != want { - t.Errorf("got Serialize = %d, want = %d", got, want) - } - if !bytes.Equal(targetBuf, expected) { - t.Fatalf("got targetBuf = %x, want = %x", targetBuf, expected) - } - - it, err := opts.Iter(true) - if err != nil { - t.Fatalf("got Iter = (_, %s), want = (_, nil)", err) - } - - next, done, err := it.Next() - if err != nil { - t.Fatalf("got Next = (_, _, %s), want = (_, _, nil)", err) - } - if done { - t.Fatal("got Next = (_, true, _), want = (_, false, _)") - } - if got := next.Type(); got != NDPRecursiveDNSServerOptionType { - t.Errorf("got Type = %d, want = %d", got, NDPRecursiveDNSServerOptionType) - } - - opt, ok := next.(NDPRecursiveDNSServer) - if !ok { - t.Fatalf("next (type = %T) cannot be casted to an NDPRecursiveDNSServer", next) - } - if got := opt.Type(); got != 25 { - t.Errorf("got Type = %d, want = 31", got) - } - if got := opt.Length(); got != 22 { - t.Errorf("got Length = %d, want = 22", got) - } - if got, want := opt.Lifetime(), 16909320*time.Second; got != want { - t.Errorf("got Lifetime = %s, want = %s", got, want) - } - want := []tcpip.Address{ - "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f", - } - if got := opt.Addresses(); !cmp.Equal(got, want) { - t.Errorf("got Addresses = %v, want = %v", got, want) - } - - // Iterator should not return anything else. - next, done, err = it.Next() - if err != nil { - t.Errorf("got Next = (_, _, %s), want = (_, _, nil)", err) - } - if !done { - t.Error("got Next = (_, false, _), want = (_, true, _)") - } - if next != nil { - t.Errorf("got Next = (%x, _, _), want = (nil, _, _)", next) - } -} - -func TestNDPRecursiveDNSServerOption(t *testing.T) { - tests := []struct { - name string - buf []byte - lifetime time.Duration - addrs []tcpip.Address - }{ - { - "Valid1Addr", - []byte{ - 25, 3, 0, 0, - 0, 0, 0, 0, - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, - }, - 0, - []tcpip.Address{ - "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f", - }, - }, - { - "Valid2Addr", - []byte{ - 25, 5, 0, 0, - 0, 0, 0, 0, - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, - 17, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, - }, - 0, - []tcpip.Address{ - "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f", - "\x11\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x10", - }, - }, - { - "Valid3Addr", - []byte{ - 25, 7, 0, 0, - 0, 0, 0, 0, - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, - 17, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, - 17, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 17, - }, - 0, - []tcpip.Address{ - "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f", - "\x11\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x10", - "\x11\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x11", - }, - }, - } - - for _, test := range tests { - t.Run(test.name, func(t *testing.T) { - opts := NDPOptions(test.buf) - it, err := opts.Iter(true) - if err != nil { - t.Fatalf("got Iter = (_, %s), want = (_, nil)", err) - } - - // Iterator should get our option. - next, done, err := it.Next() - if err != nil { - t.Fatalf("got Next = (_, _, %s), want = (_, _, nil)", err) - } - if done { - t.Fatal("got Next = (_, true, _), want = (_, false, _)") - } - if got := next.Type(); got != NDPRecursiveDNSServerOptionType { - t.Fatalf("got Type %= %d, want = %d", got, NDPRecursiveDNSServerOptionType) - } - - opt, ok := next.(NDPRecursiveDNSServer) - if !ok { - t.Fatalf("next (type = %T) cannot be casted to an NDPRecursiveDNSServer", next) - } - if got := opt.Lifetime(); got != test.lifetime { - t.Errorf("got Lifetime = %d, want = %d", got, test.lifetime) - } - if got := opt.Addresses(); !cmp.Equal(got, test.addrs) { - t.Errorf("got Addresses = %v, want = %v", got, test.addrs) - } - - // Iterator should not return anything else. - next, done, err = it.Next() - if err != nil { - t.Errorf("got Next = (_, _, %s), want = (_, _, nil)", err) - } - if !done { - t.Error("got Next = (_, false, _), want = (_, true, _)") - } - if next != nil { - t.Errorf("got Next = (%x, _, _), want = (nil, _, _)", next) - } - }) - } -} - -// TestNDPOptionsIterCheck tests that Iter will return false if the NDPOptions -// the iterator was returned for is malformed. -func TestNDPOptionsIterCheck(t *testing.T) { - tests := []struct { - name string - buf []byte - expected error - }{ - { - "ZeroLengthField", - []byte{0, 0, 0, 0, 0, 0, 0, 0}, - ErrNDPOptZeroLength, - }, - { - "ValidTargetLinkLayerAddressOption", - []byte{2, 1, 1, 2, 3, 4, 5, 6}, - nil, - }, - { - "TooSmallTargetLinkLayerAddressOption", - []byte{2, 1, 1, 2, 3, 4, 5}, - ErrNDPOptBufExhausted, - }, - { - "ValidPrefixInformation", - []byte{ - 3, 4, 43, 64, - 1, 2, 3, 4, - 5, 6, 7, 8, - 0, 0, 0, 0, - 9, 10, 11, 12, - 13, 14, 15, 16, - 17, 18, 19, 20, - 21, 22, 23, 24, - }, - nil, - }, - { - "TooSmallPrefixInformation", - []byte{ - 3, 4, 43, 64, - 1, 2, 3, 4, - 5, 6, 7, 8, - 0, 0, 0, 0, - 9, 10, 11, 12, - 13, 14, 15, 16, - 17, 18, 19, 20, - 21, 22, 23, - }, - ErrNDPOptBufExhausted, - }, - { - "InvalidPrefixInformationLength", - []byte{ - 3, 3, 43, 64, - 1, 2, 3, 4, - 5, 6, 7, 8, - 0, 0, 0, 0, - 9, 10, 11, 12, - 13, 14, 15, 16, - }, - ErrNDPOptMalformedBody, - }, - { - "ValidTargetLinkLayerAddressWithPrefixInformation", - []byte{ - // Target Link-Layer Address. - 2, 1, 1, 2, 3, 4, 5, 6, - - // Prefix information. - 3, 4, 43, 64, - 1, 2, 3, 4, - 5, 6, 7, 8, - 0, 0, 0, 0, - 9, 10, 11, 12, - 13, 14, 15, 16, - 17, 18, 19, 20, - 21, 22, 23, 24, - }, - nil, - }, - { - "ValidTargetLinkLayerAddressWithPrefixInformationWithUnrecognized", - []byte{ - // Target Link-Layer Address. - 2, 1, 1, 2, 3, 4, 5, 6, - - // 255 is an unrecognized type. If 255 ends up - // being the type for some recognized type, - // update 255 to some other unrecognized value. - 255, 2, 1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 7, 8, - - // Prefix information. - 3, 4, 43, 64, - 1, 2, 3, 4, - 5, 6, 7, 8, - 0, 0, 0, 0, - 9, 10, 11, 12, - 13, 14, 15, 16, - 17, 18, 19, 20, - 21, 22, 23, 24, - }, - nil, - }, - { - "InvalidRecursiveDNSServerCutsOffAddress", - []byte{ - 25, 4, 0, 0, - 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, - 0, 1, 2, 3, 4, 5, 6, 7, - }, - ErrNDPOptMalformedBody, - }, - { - "InvalidRecursiveDNSServerInvalidLengthField", - []byte{ - 25, 2, 0, 0, - 0, 0, 0, 0, - 0, 1, 2, 3, 4, 5, 6, 7, 8, - }, - ErrNDPInvalidLength, - }, - { - "RecursiveDNSServerTooSmall", - []byte{ - 25, 1, 0, 0, - 0, 0, 0, - }, - ErrNDPOptBufExhausted, - }, - { - "RecursiveDNSServerMulticast", - []byte{ - 25, 3, 0, 0, - 0, 0, 0, 0, - 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, - }, - ErrNDPOptMalformedBody, - }, - { - "RecursiveDNSServerUnspecified", - []byte{ - 25, 3, 0, 0, - 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - }, - ErrNDPOptMalformedBody, - }, - } - - for _, test := range tests { - t.Run(test.name, func(t *testing.T) { - opts := NDPOptions(test.buf) - - if _, err := opts.Iter(true); err != test.expected { - t.Fatalf("got Iter(true) = (_, %v), want = (_, %v)", err, test.expected) - } - - // test.buf may be malformed but we chose not to check - // the iterator so it must return true. - if _, err := opts.Iter(false); err != nil { - t.Fatalf("got Iter(false) = (_, %s), want = (_, nil)", err) - } - }) - } -} - -// TestNDPOptionsIter tests that we can iterator over a valid NDPOptions. Note, -// this test does not actually check any of the option's getters, it simply -// checks the option Type and Body. We have other tests that tests the option -// field gettings given an option body and don't need to duplicate those tests -// here. -func TestNDPOptionsIter(t *testing.T) { - buf := []byte{ - // Target Link-Layer Address. - 2, 1, 1, 2, 3, 4, 5, 6, - - // 255 is an unrecognized type. If 255 ends up being the type - // for some recognized type, update 255 to some other - // unrecognized value. Note, this option should be skipped when - // iterating. - 255, 2, 1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 7, 8, - - // Prefix information. - 3, 4, 43, 64, - 1, 2, 3, 4, - 5, 6, 7, 8, - 0, 0, 0, 0, - 9, 10, 11, 12, - 13, 14, 15, 16, - 17, 18, 19, 20, - 21, 22, 23, 24, - } - - opts := NDPOptions(buf) - it, err := opts.Iter(true) - if err != nil { - t.Fatalf("got Iter = (_, %s), want = (_, nil)", err) - } - - // Test the first (Taret Link-Layer) option. - next, done, err := it.Next() - if err != nil { - t.Fatalf("got Next = (_, _, %s), want = (_, _, nil)", err) - } - if done { - t.Fatal("got Next = (_, true, _), want = (_, false, _)") - } - if got, want := []byte(next.(NDPTargetLinkLayerAddressOption)), buf[2:][:6]; !bytes.Equal(got, want) { - t.Errorf("got Next = (%x, _, _), want = (%x, _, _)", got, want) - } - if got := next.Type(); got != NDPTargetLinkLayerAddressOptionType { - t.Errorf("got Type = %d, want = %d", got, NDPTargetLinkLayerAddressOptionType) - } - - // Test the next (Prefix Information) option. - // Note, the unrecognized option should be skipped. - next, done, err = it.Next() - if err != nil { - t.Fatalf("got Next = (_, _, %s), want = (_, _, nil)", err) - } - if done { - t.Fatal("got Next = (_, true, _), want = (_, false, _)") - } - if got, want := next.(NDPPrefixInformation), buf[26:][:30]; !bytes.Equal(got, want) { - t.Errorf("got Next = (%x, _, _), want = (%x, _, _)", got, want) - } - if got := next.Type(); got != NDPPrefixInformationType { - t.Errorf("got Type = %d, want = %d", got, NDPPrefixInformationType) - } - - // Iterator should not return anything else. - next, done, err = it.Next() - if err != nil { - t.Errorf("got Next = (_, _, %s), want = (_, _, nil)", err) - } - if !done { - t.Error("got Next = (_, false, _), want = (_, true, _)") - } - if next != nil { - t.Errorf("got Next = (%x, _, _), want = (nil, _, _)", next) - } -} |