libgo/go/net/ip_test.go

   1 // Copyright 2009 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package net
   6
   7 import (
   8         "reflect"
   9         "runtime"
  10         "testing"
  11 )
  12
  13 var parseIPTests = []struct {
  14         in  string
  15         out IP
  16 }{
  17         {"127.0.1.2", IPv4(127, 0, 1, 2)},
  18         {"127.0.0.1", IPv4(127, 0, 0, 1)},
  19         {"127.0.0.256", nil},
  20         {"abc", nil},
  21         {"123:", nil},
  22         {"::ffff:127.0.0.1", IPv4(127, 0, 0, 1)},
  23         {"2001:4860:0:2001::68", IP{0x20, 0x01, 0x48, 0x60, 0, 0, 0x20, 0x01, 0, 0, 0, 0, 0, 0, 0x00, 0x68}},
  24         {"::ffff:4a7d:1363", IPv4(74, 125, 19, 99)},
  25         {"fe80::1%lo0", nil},
  26         {"fe80::1%911", nil},
  27         {"", nil},
  28 }
  29
  30 func TestParseIP(t *testing.T) {
  31         for _, tt := range parseIPTests {
  32                 if out := ParseIP(tt.in); !reflect.DeepEqual(out, tt.out) {
  33                         t.Errorf("ParseIP(%q) = %v, want %v", tt.in, out, tt.out)
  34                 }
  35         }
  36 }
  37
  38 var ipStringTests = []struct {
  39         in  IP
  40         out string // see RFC 5952
  41 }{
  42         {IP{0x20, 0x1, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0x1, 0x23, 0, 0x12, 0, 0x1}, "2001:db8::123:12:1"},
  43         {IP{0x20, 0x1, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x1}, "2001:db8::1"},
  44         {IP{0x20, 0x1, 0xd, 0xb8, 0, 0, 0, 0x1, 0, 0, 0, 0x1, 0, 0, 0, 0x1}, "2001:db8:0:1:0:1:0:1"},
  45         {IP{0x20, 0x1, 0xd, 0xb8, 0, 0x1, 0, 0, 0, 0x1, 0, 0, 0, 0x1, 0, 0}, "2001:db8:1:0:1:0:1:0"},
  46         {IP{0x20, 0x1, 0, 0, 0, 0, 0, 0, 0, 0x1, 0, 0, 0, 0, 0, 0x1}, "2001::1:0:0:1"},
  47         {IP{0x20, 0x1, 0xd, 0xb8, 0, 0, 0, 0, 0, 0x1, 0, 0, 0, 0, 0, 0}, "2001:db8:0:0:1::"},
  48         {IP{0x20, 0x1, 0xd, 0xb8, 0, 0, 0, 0, 0, 0x1, 0, 0, 0, 0, 0, 0x1}, "2001:db8::1:0:0:1"},
  49         {IP{0x20, 0x1, 0xD, 0xB8, 0, 0, 0, 0, 0, 0xA, 0, 0xB, 0, 0xC, 0, 0xD}, "2001:db8::a:b:c:d"},
  50         {nil, "<nil>"},
  51 }
  52
  53 func TestIPString(t *testing.T) {
  54         for _, tt := range ipStringTests {
  55                 if out := tt.in.String(); out != tt.out {
  56                         t.Errorf("IP.String(%v) = %q, want %q", tt.in, out, tt.out)
  57                 }
  58         }
  59 }
  60
  61 var ipMaskTests = []struct {
  62         in   IP
  63         mask IPMask
  64         out  IP
  65 }{
  66         {IPv4(192, 168, 1, 127), IPv4Mask(255, 255, 255, 128), IPv4(192, 168, 1, 0)},
  67         {IPv4(192, 168, 1, 127), IPMask(ParseIP("255.255.255.192")), IPv4(192, 168, 1, 64)},
  68         {IPv4(192, 168, 1, 127), IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffe0")), IPv4(192, 168, 1, 96)},
  69         {IPv4(192, 168, 1, 127), IPv4Mask(255, 0, 255, 0), IPv4(192, 0, 1, 0)},
  70         {ParseIP("2001:db8::1"), IPMask(ParseIP("ffff:ff80::")), ParseIP("2001:d80::")},
  71         {ParseIP("2001:db8::1"), IPMask(ParseIP("f0f0:0f0f::")), ParseIP("2000:d08::")},
  72 }
  73
  74 func TestIPMask(t *testing.T) {
  75         for _, tt := range ipMaskTests {
  76                 if out := tt.in.Mask(tt.mask); out == nil || !tt.out.Equal(out) {
  77                         t.Errorf("IP(%v).Mask(%v) = %v, want %v", tt.in, tt.mask, out, tt.out)
  78                 }
  79         }
  80 }
  81
  82 var ipMaskStringTests = []struct {
  83         in  IPMask
  84         out string
  85 }{
  86         {IPv4Mask(255, 255, 255, 240), "fffffff0"},
  87         {IPv4Mask(255, 0, 128, 0), "ff008000"},
  88         {IPMask(ParseIP("ffff:ff80::")), "ffffff80000000000000000000000000"},
  89         {IPMask(ParseIP("ef00:ff80::cafe:0")), "ef00ff800000000000000000cafe0000"},
  90         {nil, "<nil>"},
  91 }
  92
  93 func TestIPMaskString(t *testing.T) {
  94         for _, tt := range ipMaskStringTests {
  95                 if out := tt.in.String(); out != tt.out {
  96                         t.Errorf("IPMask.String(%v) = %q, want %q", tt.in, out, tt.out)
  97                 }
  98         }
  99 }
 100
 101 var parseCIDRTests = []struct {
 102         in  string
 103         ip  IP
 104         net *IPNet
 105         err error
 106 }{
 107         {"135.104.0.0/32", IPv4(135, 104, 0, 0), &IPNet{IP: IPv4(135, 104, 0, 0), Mask: IPv4Mask(255, 255, 255, 255)}, nil},
 108         {"0.0.0.0/24", IPv4(0, 0, 0, 0), &IPNet{IP: IPv4(0, 0, 0, 0), Mask: IPv4Mask(255, 255, 255, 0)}, nil},
 109         {"135.104.0.0/24", IPv4(135, 104, 0, 0), &IPNet{IP: IPv4(135, 104, 0, 0), Mask: IPv4Mask(255, 255, 255, 0)}, nil},
 110         {"135.104.0.1/32", IPv4(135, 104, 0, 1), &IPNet{IP: IPv4(135, 104, 0, 1), Mask: IPv4Mask(255, 255, 255, 255)}, nil},
 111         {"135.104.0.1/24", IPv4(135, 104, 0, 1), &IPNet{IP: IPv4(135, 104, 0, 0), Mask: IPv4Mask(255, 255, 255, 0)}, nil},
 112         {"::1/128", ParseIP("::1"), &IPNet{IP: ParseIP("::1"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"))}, nil},
 113         {"abcd:2345::/127", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2345::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffe"))}, nil},
 114         {"abcd:2345::/65", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2345::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff:8000::"))}, nil},
 115         {"abcd:2345::/64", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2345::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:ffff::"))}, nil},
 116         {"abcd:2345::/63", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2345::"), Mask: IPMask(ParseIP("ffff:ffff:ffff:fffe::"))}, nil},
 117         {"abcd:2345::/33", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2345::"), Mask: IPMask(ParseIP("ffff:ffff:8000::"))}, nil},
 118         {"abcd:2345::/32", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2345::"), Mask: IPMask(ParseIP("ffff:ffff::"))}, nil},
 119         {"abcd:2344::/31", ParseIP("abcd:2344::"), &IPNet{IP: ParseIP("abcd:2344::"), Mask: IPMask(ParseIP("ffff:fffe::"))}, nil},
 120         {"abcd:2300::/24", ParseIP("abcd:2300::"), &IPNet{IP: ParseIP("abcd:2300::"), Mask: IPMask(ParseIP("ffff:ff00::"))}, nil},
 121         {"abcd:2345::/24", ParseIP("abcd:2345::"), &IPNet{IP: ParseIP("abcd:2300::"), Mask: IPMask(ParseIP("ffff:ff00::"))}, nil},
 122         {"2001:DB8::/48", ParseIP("2001:DB8::"), &IPNet{IP: ParseIP("2001:DB8::"), Mask: IPMask(ParseIP("ffff:ffff:ffff::"))}, nil},
 123         {"2001:DB8::1/48", ParseIP("2001:DB8::1"), &IPNet{IP: ParseIP("2001:DB8::"), Mask: IPMask(ParseIP("ffff:ffff:ffff::"))}, nil},
 124         {"192.168.1.1/255.255.255.0", nil, nil, &ParseError{"CIDR address", "192.168.1.1/255.255.255.0"}},
 125         {"192.168.1.1/35", nil, nil, &ParseError{"CIDR address", "192.168.1.1/35"}},
 126         {"2001:db8::1/-1", nil, nil, &ParseError{"CIDR address", "2001:db8::1/-1"}},
 127         {"", nil, nil, &ParseError{"CIDR address", ""}},
 128 }
 129
 130 func TestParseCIDR(t *testing.T) {
 131         for _, tt := range parseCIDRTests {
 132                 ip, net, err := ParseCIDR(tt.in)
 133                 if !reflect.DeepEqual(err, tt.err) {
 134                         t.Errorf("ParseCIDR(%q) = %v, %v; want %v, %v", tt.in, ip, net, tt.ip, tt.net)
 135                 }
 136                 if err == nil && (!tt.ip.Equal(ip) || !tt.net.IP.Equal(net.IP) || !reflect.DeepEqual(net.Mask, tt.net.Mask)) {
 137                         t.Errorf("ParseCIDR(%q) = %v, {%v, %v}; want %v, {%v, %v}", tt.in, ip, net.IP, net.Mask, tt.ip, tt.net.IP, tt.net.Mask)
 138                 }
 139         }
 140 }
 141
 142 var ipNetContainsTests = []struct {
 143         ip  IP
 144         net *IPNet
 145         ok  bool
 146 }{
 147         {IPv4(172, 16, 1, 1), &IPNet{IP: IPv4(172, 16, 0, 0), Mask: CIDRMask(12, 32)}, true},
 148         {IPv4(172, 24, 0, 1), &IPNet{IP: IPv4(172, 16, 0, 0), Mask: CIDRMask(13, 32)}, false},
 149         {IPv4(192, 168, 0, 3), &IPNet{IP: IPv4(192, 168, 0, 0), Mask: IPv4Mask(0, 0, 255, 252)}, true},
 150         {IPv4(192, 168, 0, 4), &IPNet{IP: IPv4(192, 168, 0, 0), Mask: IPv4Mask(0, 255, 0, 252)}, false},
 151         {ParseIP("2001:db8:1:2::1"), &IPNet{IP: ParseIP("2001:db8:1::"), Mask: CIDRMask(47, 128)}, true},
 152         {ParseIP("2001:db8:1:2::1"), &IPNet{IP: ParseIP("2001:db8:2::"), Mask: CIDRMask(47, 128)}, false},
 153         {ParseIP("2001:db8:1:2::1"), &IPNet{IP: ParseIP("2001:db8:1::"), Mask: IPMask(ParseIP("ffff:0:ffff::"))}, true},
 154         {ParseIP("2001:db8:1:2::1"), &IPNet{IP: ParseIP("2001:db8:1::"), Mask: IPMask(ParseIP("0:0:0:ffff::"))}, false},
 155 }
 156
 157 func TestIPNetContains(t *testing.T) {
 158         for _, tt := range ipNetContainsTests {
 159                 if ok := tt.net.Contains(tt.ip); ok != tt.ok {
 160                         t.Errorf("IPNet(%v).Contains(%v) = %v, want %v", tt.net, tt.ip, ok, tt.ok)
 161                 }
 162         }
 163 }
 164
 165 var ipNetStringTests = []struct {
 166         in  *IPNet
 167         out string
 168 }{
 169         {&IPNet{IP: IPv4(192, 168, 1, 0), Mask: CIDRMask(26, 32)}, "192.168.1.0/26"},
 170         {&IPNet{IP: IPv4(192, 168, 1, 0), Mask: IPv4Mask(255, 0, 255, 0)}, "192.168.1.0/ff00ff00"},
 171         {&IPNet{IP: ParseIP("2001:db8::"), Mask: CIDRMask(55, 128)}, "2001:db8::/55"},
 172         {&IPNet{IP: ParseIP("2001:db8::"), Mask: IPMask(ParseIP("8000:f123:0:cafe::"))}, "2001:db8::/8000f1230000cafe0000000000000000"},
 173 }
 174
 175 func TestIPNetString(t *testing.T) {
 176         for _, tt := range ipNetStringTests {
 177                 if out := tt.in.String(); out != tt.out {
 178                         t.Errorf("IPNet.String(%v) = %q, want %q", tt.in, out, tt.out)
 179                 }
 180         }
 181 }
 182
 183 var cidrMaskTests = []struct {
 184         ones int
 185         bits int
 186         out  IPMask
 187 }{
 188         {0, 32, IPv4Mask(0, 0, 0, 0)},
 189         {12, 32, IPv4Mask(255, 240, 0, 0)},
 190         {24, 32, IPv4Mask(255, 255, 255, 0)},
 191         {32, 32, IPv4Mask(255, 255, 255, 255)},
 192         {0, 128, IPMask{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
 193         {4, 128, IPMask{0xf0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
 194         {48, 128, IPMask{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
 195         {128, 128, IPMask{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}},
 196         {33, 32, nil},
 197         {32, 33, nil},
 198         {-1, 128, nil},
 199         {128, -1, nil},
 200 }
 201
 202 func TestCIDRMask(t *testing.T) {
 203         for _, tt := range cidrMaskTests {
 204                 if out := CIDRMask(tt.ones, tt.bits); !reflect.DeepEqual(out, tt.out) {
 205                         t.Errorf("CIDRMask(%v, %v) = %v, want %v", tt.ones, tt.bits, out, tt.out)
 206                 }
 207         }
 208 }
 209
 210 var (
 211         v4addr         = IP{192, 168, 0, 1}
 212         v4mappedv6addr = IP{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xff, 0xff, 192, 168, 0, 1}
 213         v6addr         = IP{0x20, 0x1, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0x1, 0x23, 0, 0x12, 0, 0x1}
 214         v4mask         = IPMask{255, 255, 255, 0}
 215         v4mappedv6mask = IPMask{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 255, 255, 255, 0}
 216         v6mask         = IPMask{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0}
 217         badaddr        = IP{192, 168, 0}
 218         badmask        = IPMask{255, 255, 0}
 219         v4maskzero     = IPMask{0, 0, 0, 0}
 220 )
 221
 222 var networkNumberAndMaskTests = []struct {
 223         in  IPNet
 224         out IPNet
 225 }{
 226         {IPNet{IP: v4addr, Mask: v4mask}, IPNet{IP: v4addr, Mask: v4mask}},
 227         {IPNet{IP: v4addr, Mask: v4mappedv6mask}, IPNet{IP: v4addr, Mask: v4mask}},
 228         {IPNet{IP: v4mappedv6addr, Mask: v4mappedv6mask}, IPNet{IP: v4addr, Mask: v4mask}},
 229         {IPNet{IP: v4mappedv6addr, Mask: v6mask}, IPNet{IP: v4addr, Mask: v4maskzero}},
 230         {IPNet{IP: v4addr, Mask: v6mask}, IPNet{IP: v4addr, Mask: v4maskzero}},
 231         {IPNet{IP: v6addr, Mask: v6mask}, IPNet{IP: v6addr, Mask: v6mask}},
 232         {IPNet{IP: v6addr, Mask: v4mappedv6mask}, IPNet{IP: v6addr, Mask: v4mappedv6mask}},
 233         {in: IPNet{IP: v6addr, Mask: v4mask}},
 234         {in: IPNet{IP: v4addr, Mask: badmask}},
 235         {in: IPNet{IP: v4mappedv6addr, Mask: badmask}},
 236         {in: IPNet{IP: v6addr, Mask: badmask}},
 237         {in: IPNet{IP: badaddr, Mask: v4mask}},
 238         {in: IPNet{IP: badaddr, Mask: v4mappedv6mask}},
 239         {in: IPNet{IP: badaddr, Mask: v6mask}},
 240         {in: IPNet{IP: badaddr, Mask: badmask}},
 241 }
 242
 243 func TestNetworkNumberAndMask(t *testing.T) {
 244         for _, tt := range networkNumberAndMaskTests {
 245                 ip, m := networkNumberAndMask(&tt.in)
 246                 out := &IPNet{IP: ip, Mask: m}
 247                 if !reflect.DeepEqual(&tt.out, out) {
 248                         t.Errorf("networkNumberAndMask(%v) = %v, want %v", tt.in, out, &tt.out)
 249                 }
 250         }
 251 }
 252
 253 var splitJoinTests = []struct {
 254         host string
 255         port string
 256         join string
 257 }{
 258         {"www.google.com", "80", "www.google.com:80"},
 259         {"127.0.0.1", "1234", "127.0.0.1:1234"},
 260         {"::1", "80", "[::1]:80"},
 261         {"fe80::1%lo0", "80", "[fe80::1%lo0]:80"},
 262         {"localhost%lo0", "80", "[localhost%lo0]:80"},
 263         {"", "0", ":0"},
 264
 265         {"google.com", "https%foo", "google.com:https%foo"}, // Go 1.0 behavior
 266         {"127.0.0.1", "", "127.0.0.1:"},                     // Go 1.0 behaviour
 267         {"www.google.com", "", "www.google.com:"},           // Go 1.0 behaviour
 268 }
 269
 270 var splitFailureTests = []struct {
 271         hostPort string
 272         err      string
 273 }{
 274         {"www.google.com", "missing port in address"},
 275         {"127.0.0.1", "missing port in address"},
 276         {"[::1]", "missing port in address"},
 277         {"[fe80::1%lo0]", "missing port in address"},
 278         {"[localhost%lo0]", "missing port in address"},
 279         {"localhost%lo0", "missing port in address"},
 280
 281         {"::1", "too many colons in address"},
 282         {"fe80::1%lo0", "too many colons in address"},
 283         {"fe80::1%lo0:80", "too many colons in address"},
 284
 285         {"localhost%lo0:80", "missing brackets in address"},
 286
 287         // Test cases that didn't fail in Go 1.0
 288
 289         {"[foo:bar]", "missing port in address"},
 290         {"[foo:bar]baz", "missing port in address"},
 291         {"[foo]bar:baz", "missing port in address"},
 292
 293         {"[foo]:[bar]:baz", "too many colons in address"},
 294
 295         {"[foo]:[bar]baz", "unexpected '[' in address"},
 296         {"foo[bar]:baz", "unexpected '[' in address"},
 297
 298         {"foo]bar:baz", "unexpected ']' in address"},
 299 }
 300
 301 func TestSplitHostPort(t *testing.T) {
 302         for _, tt := range splitJoinTests {
 303                 if host, port, err := SplitHostPort(tt.join); host != tt.host || port != tt.port || err != nil {
 304                         t.Errorf("SplitHostPort(%q) = %q, %q, %v; want %q, %q, nil", tt.join, host, port, err, tt.host, tt.port)
 305                 }
 306         }
 307         for _, tt := range splitFailureTests {
 308                 if _, _, err := SplitHostPort(tt.hostPort); err == nil {
 309                         t.Errorf("SplitHostPort(%q) should have failed", tt.hostPort)
 310                 } else {
 311                         e := err.(*AddrError)
 312                         if e.Err != tt.err {
 313                                 t.Errorf("SplitHostPort(%q) = _, _, %q; want %q", tt.hostPort, e.Err, tt.err)
 314                         }
 315                 }
 316         }
 317 }
 318
 319 func TestJoinHostPort(t *testing.T) {
 320         for _, tt := range splitJoinTests {
 321                 if join := JoinHostPort(tt.host, tt.port); join != tt.join {
 322                         t.Errorf("JoinHostPort(%q, %q) = %q; want %q", tt.host, tt.port, join, tt.join)
 323                 }
 324         }
 325 }
 326
 327 var ipAddrFamilyTests = []struct {
 328         in  IP
 329         af4 bool
 330         af6 bool
 331 }{
 332         {IPv4bcast, true, false},
 333         {IPv4allsys, true, false},
 334         {IPv4allrouter, true, false},
 335         {IPv4zero, true, false},
 336         {IPv4(224, 0, 0, 1), true, false},
 337         {IPv4(127, 0, 0, 1), true, false},
 338         {IPv4(240, 0, 0, 1), true, false},
 339         {IPv6unspecified, false, true},
 340         {IPv6loopback, false, true},
 341         {IPv6interfacelocalallnodes, false, true},
 342         {IPv6linklocalallnodes, false, true},
 343         {IPv6linklocalallrouters, false, true},
 344         {ParseIP("ff05::a:b:c:d"), false, true},
 345         {ParseIP("fe80::1:2:3:4"), false, true},
 346         {ParseIP("2001:db8::123:12:1"), false, true},
 347 }
 348
 349 func TestIPAddrFamily(t *testing.T) {
 350         for _, tt := range ipAddrFamilyTests {
 351                 if af := tt.in.To4() != nil; af != tt.af4 {
 352                         t.Errorf("verifying IPv4 address family for %q = %v, want %v", tt.in, af, tt.af4)
 353                 }
 354                 if af := len(tt.in) == IPv6len && tt.in.To4() == nil; af != tt.af6 {
 355                         t.Errorf("verifying IPv6 address family for %q = %v, want %v", tt.in, af, tt.af6)
 356                 }
 357         }
 358 }
 359
 360 var ipAddrScopeTests = []struct {
 361         scope func(IP) bool
 362         in    IP
 363         ok    bool
 364 }{
 365         {IP.IsUnspecified, IPv4zero, true},
 366         {IP.IsUnspecified, IPv4(127, 0, 0, 1), false},
 367         {IP.IsUnspecified, IPv6unspecified, true},
 368         {IP.IsUnspecified, IPv6interfacelocalallnodes, false},
 369         {IP.IsLoopback, IPv4(127, 0, 0, 1), true},
 370         {IP.IsLoopback, IPv4(127, 255, 255, 254), true},
 371         {IP.IsLoopback, IPv4(128, 1, 2, 3), false},
 372         {IP.IsLoopback, IPv6loopback, true},
 373         {IP.IsLoopback, IPv6linklocalallrouters, false},
 374         {IP.IsMulticast, IPv4(224, 0, 0, 0), true},
 375         {IP.IsMulticast, IPv4(239, 0, 0, 0), true},
 376         {IP.IsMulticast, IPv4(240, 0, 0, 0), false},
 377         {IP.IsMulticast, IPv6linklocalallnodes, true},
 378         {IP.IsMulticast, IP{0xff, 0x05, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, true},
 379         {IP.IsMulticast, IP{0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, false},
 380         {IP.IsLinkLocalMulticast, IPv4(224, 0, 0, 0), true},
 381         {IP.IsLinkLocalMulticast, IPv4(239, 0, 0, 0), false},
 382         {IP.IsLinkLocalMulticast, IPv6linklocalallrouters, true},
 383         {IP.IsLinkLocalMulticast, IP{0xff, 0x05, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, false},
 384         {IP.IsLinkLocalUnicast, IPv4(169, 254, 0, 0), true},
 385         {IP.IsLinkLocalUnicast, IPv4(169, 255, 0, 0), false},
 386         {IP.IsLinkLocalUnicast, IP{0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, true},
 387         {IP.IsLinkLocalUnicast, IP{0xfe, 0xc0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, false},
 388         {IP.IsGlobalUnicast, IPv4(240, 0, 0, 0), true},
 389         {IP.IsGlobalUnicast, IPv4(232, 0, 0, 0), false},
 390         {IP.IsGlobalUnicast, IPv4(169, 254, 0, 0), false},
 391         {IP.IsGlobalUnicast, IP{0x20, 0x1, 0xd, 0xb8, 0, 0, 0, 0, 0, 0, 0x1, 0x23, 0, 0x12, 0, 0x1}, true},
 392         {IP.IsGlobalUnicast, IP{0xfe, 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, false},
 393         {IP.IsGlobalUnicast, IP{0xff, 0x05, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, false},
 394 }
 395
 396 func name(f interface{}) string {
 397         return runtime.FuncForPC(reflect.ValueOf(f).Pointer()).Name()
 398 }
 399
 400 func TestIPAddrScope(t *testing.T) {
 401         for _, tt := range ipAddrScopeTests {
 402                 if ok := tt.scope(tt.in); ok != tt.ok {
 403                         t.Errorf("%s(%q) = %v, want %v", name(tt.scope), tt.in, ok, tt.ok)
 404                 }
 405         }
 406 }