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