mirror of https://github.com/kubernetes/kops.git
139 lines
3.1 KiB
Go
139 lines
3.1 KiB
Go
// Copyright 2012 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package ipv4
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import (
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"bytes"
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"encoding/binary"
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"net"
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"reflect"
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"runtime"
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"strings"
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"testing"
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)
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type headerTest struct {
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wireHeaderFromKernel [HeaderLen]byte
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wireHeaderToKernel [HeaderLen]byte
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wireHeaderFromTradBSDKernel [HeaderLen]byte
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wireHeaderFromFreeBSD10Kernel [HeaderLen]byte
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wireHeaderToTradBSDKernel [HeaderLen]byte
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*Header
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}
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var headerLittleEndianTest = headerTest{
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// TODO(mikio): Add platform dependent wire header formats when
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// we support new platforms.
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wireHeaderFromKernel: [HeaderLen]byte{
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0x45, 0x01, 0xbe, 0xef,
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0xca, 0xfe, 0x45, 0xdc,
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0xff, 0x01, 0xde, 0xad,
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172, 16, 254, 254,
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192, 168, 0, 1,
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},
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wireHeaderToKernel: [HeaderLen]byte{
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0x45, 0x01, 0xbe, 0xef,
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0xca, 0xfe, 0x45, 0xdc,
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0xff, 0x01, 0xde, 0xad,
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172, 16, 254, 254,
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192, 168, 0, 1,
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},
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wireHeaderFromTradBSDKernel: [HeaderLen]byte{
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0x45, 0x01, 0xdb, 0xbe,
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0xca, 0xfe, 0xdc, 0x45,
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0xff, 0x01, 0xde, 0xad,
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172, 16, 254, 254,
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192, 168, 0, 1,
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},
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wireHeaderFromFreeBSD10Kernel: [HeaderLen]byte{
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0x45, 0x01, 0xef, 0xbe,
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0xca, 0xfe, 0xdc, 0x45,
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0xff, 0x01, 0xde, 0xad,
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172, 16, 254, 254,
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192, 168, 0, 1,
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},
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wireHeaderToTradBSDKernel: [HeaderLen]byte{
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0x45, 0x01, 0xef, 0xbe,
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0xca, 0xfe, 0xdc, 0x45,
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0xff, 0x01, 0xde, 0xad,
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172, 16, 254, 254,
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192, 168, 0, 1,
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},
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Header: &Header{
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Version: Version,
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Len: HeaderLen,
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TOS: 1,
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TotalLen: 0xbeef,
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ID: 0xcafe,
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Flags: DontFragment,
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FragOff: 1500,
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TTL: 255,
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Protocol: 1,
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Checksum: 0xdead,
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Src: net.IPv4(172, 16, 254, 254),
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Dst: net.IPv4(192, 168, 0, 1),
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},
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}
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func TestMarshalHeader(t *testing.T) {
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tt := &headerLittleEndianTest
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if nativeEndian != binary.LittleEndian {
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t.Skip("no test for non-little endian machine yet")
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}
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b, err := tt.Header.Marshal()
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if err != nil {
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t.Fatal(err)
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}
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var wh []byte
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switch runtime.GOOS {
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case "darwin", "dragonfly", "netbsd":
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wh = tt.wireHeaderToTradBSDKernel[:]
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case "freebsd":
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if freebsdVersion < 1000000 {
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wh = tt.wireHeaderToTradBSDKernel[:]
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} else {
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wh = tt.wireHeaderFromFreeBSD10Kernel[:]
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}
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default:
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wh = tt.wireHeaderToKernel[:]
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}
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if !bytes.Equal(b, wh) {
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t.Fatalf("got %#v; want %#v", b, wh)
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}
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}
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func TestParseHeader(t *testing.T) {
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tt := &headerLittleEndianTest
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if nativeEndian != binary.LittleEndian {
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t.Skip("no test for big endian machine yet")
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}
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var wh []byte
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switch runtime.GOOS {
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case "darwin", "dragonfly", "netbsd":
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wh = tt.wireHeaderFromTradBSDKernel[:]
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case "freebsd":
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if freebsdVersion < 1000000 {
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wh = tt.wireHeaderFromTradBSDKernel[:]
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} else {
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wh = tt.wireHeaderFromFreeBSD10Kernel[:]
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}
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default:
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wh = tt.wireHeaderFromKernel[:]
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}
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h, err := ParseHeader(wh)
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if err != nil {
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t.Fatal(err)
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}
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if !reflect.DeepEqual(h, tt.Header) {
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t.Fatalf("got %#v; want %#v", h, tt.Header)
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}
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s := h.String()
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if strings.Contains(s, ",") {
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t.Fatalf("should be space-separated values: %s", s)
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}
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}
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