forked from mikioh/ipaddr
/
prefix_test.go
589 lines (527 loc) · 21.5 KB
/
prefix_test.go
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// Copyright 2013 Mikio Hara. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE.
package ipaddr_test
import (
"bytes"
"math/big"
"net"
"reflect"
"sort"
"testing"
"github.com/mikioh/ipaddr"
)
type byAddrLen []ipaddr.Prefix
func (ps byAddrLen) Len() int { return len(ps) }
func (ps byAddrLen) Less(i, j int) bool {
n := ipaddr.Compare(&ps[i], &ps[j])
if n < 0 {
return true
}
if n > 0 {
return false
}
li, lj := ps[i].Len(), ps[j].Len()
if li < lj {
return true
}
if li > lj {
return false
}
return false
}
func (ps byAddrLen) Swap(i, j int) { ps[i], ps[j] = ps[j], ps[i] }
func toPrefix(s string) *ipaddr.Prefix {
if s == "" {
return nil
}
_, n, err := net.ParseCIDR(s)
if err != nil {
return nil
}
return ipaddr.NewPrefix(n)
}
func toPrefixes(ss []string) []ipaddr.Prefix {
if ss == nil {
return nil
}
var ps []ipaddr.Prefix
for _, s := range ss {
_, n, err := net.ParseCIDR(s)
if err != nil {
return nil
}
ps = append(ps, *ipaddr.NewPrefix(n))
}
return ps
}
var aggregateTests = []struct {
in, wants []string
}{
// IPv4 prefixes
{
[]string{"192.168.0.0/32", "192.168.0.1/32", "192.168.0.2/32", "192.168.0.3/32", "192.168.0.4/32", "192.168.0.0/32", "192.168.0.1/32"},
[]string{"192.168.0.0/30", "192.168.0.4/32"},
},
{
[]string{"192.168.0.0/22", "192.168.0.0/24", "192.168.1.0/24", "192.168.2.0/24", "192.168.3.0/24", "192.168.4.0/24"},
[]string{"192.168.0.0/22", "192.168.4.0/24"},
},
{
[]string{"192.168.0.0/24", "192.168.1.0/24"},
[]string{"192.168.0.0/23"},
},
{
[]string{"192.168.0.1/32", "192.168.0.1/32"},
[]string{"192.168.0.1/32"},
},
{
[]string{"192.168.0.0/24", "192.168.1.0/24", "192.168.2.0/25"},
[]string{"192.168.0.0/23", "192.168.2.0/25"},
},
{
[]string{"65.0.0.0/24", "128.0.0.0/24", "192.0.0.0/24"},
[]string{"65.0.0.0/24", "128.0.0.0/24", "192.0.0.0/24"},
},
{
[]string{"0.0.0.0/0", "192.0.0.0/24", "65.0.0.0/24"},
[]string{"0.0.0.0/0", "65.0.0.0/24", "192.0.0.0/24"},
},
{
[]string{"192.168.100.101/32", "192.168.100.102/31", "192.168.100.104/29", "192.168.100.112/28", "192.168.100.128/25", "192.168.101.0/32"},
[]string{"192.168.100.101/32", "192.168.100.102/31", "192.168.100.104/29", "192.168.100.112/28", "192.168.100.128/25", "192.168.101.0/32"},
},
{
[]string{"0.0.0.0/0", "0.0.0.0/0", "255.255.255.255/32", "255.255.255.255/32"},
[]string{"0.0.0.0/0", "255.255.255.255/32"},
},
// IPv6 prefixes
{
[]string{"2001:db8::/64", "2001:db8:0:1::/64", "2001:db8:0:2::/64", "2001:db8:0:3::/64", "2001:db8:0:4::/64", "2001:db8::/64", "2001:db8::1/64"},
[]string{"2001:db8::/62", "2001:db8:0:4::/64"},
},
{
[]string{"::/0", "2001:db8::/32", "ff30:1:2:3::/64"},
[]string{"::/0", "2001:db8::/32", "ff30:1:2:3::/64"},
},
{
[]string{"::/0", "::/0", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff/128", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff/128"},
[]string{"::/0", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff/128"},
},
}
func TestAggregate(t *testing.T) {
for i, tt := range aggregateTests {
in, orig, wants := toPrefixes(tt.in), toPrefixes(tt.in), toPrefixes(tt.wants)
sort.Sort(byAddrLen(wants))
out := ipaddr.Aggregate(in)
if !reflect.DeepEqual(out, wants) {
t.Errorf("#%d: got %v; want %v", i, out, wants)
}
if !reflect.DeepEqual(in, orig) {
t.Errorf("#%d: %v is corrupted; want %v", i, in, orig)
}
}
ipaddr.Aggregate(nil)
}
var compareTests = []struct {
in []ipaddr.Prefix
n int
}{
{toPrefixes([]string{"192.168.1.0/23", "192.168.1.0/24"}), -1},
{toPrefixes([]string{"192.168.1.0/24", "192.168.1.0/24"}), 0},
{toPrefixes([]string{"192.168.1.0/25", "192.168.1.0/24"}), +1},
{toPrefixes([]string{"192.168.0.0/24", "192.168.1.0/24"}), -1},
{toPrefixes([]string{"192.168.1.0/24", "192.168.1.0/24"}), 0},
{toPrefixes([]string{"192.168.2.0/24", "192.168.1.0/24"}), +1},
{toPrefixes([]string{"2001:db8:1::/47", "2001:db8:1::/48"}), -1},
{toPrefixes([]string{"2001:db8:1::/48", "2001:db8:1::/48"}), 0},
{toPrefixes([]string{"2001:db8:1::/49", "2001:db8:1::/48"}), +1},
{toPrefixes([]string{"2001:db8:1::/128", "2001:db8:1::1/128"}), -1},
{toPrefixes([]string{"2001:db8:1::1/128", "2001:db8:1::1/128"}), 0},
{toPrefixes([]string{"2001:db8:1::2/128", "2001:db8:1::1/128"}), +1},
{toPrefixes([]string{"192.168.0.1/24", "2001:db8:1::1/64"}), -1},
{toPrefixes([]string{"2001:db8:1::1/64", "192.168.0.1/24"}), +1},
}
func TestCompare(t *testing.T) {
for i, tt := range compareTests {
if n := ipaddr.Compare(&tt.in[0], &tt.in[1]); n != tt.n {
t.Errorf("#%d: got %v for %v; want %v", i, n, tt.in, tt.n)
}
}
}
var summarizeTests = []struct {
first, last string
wants []string
}{
// IPv4 prefixes
{
"192.168.0.0", "192.168.0.255",
[]string{"192.168.0.0/24"},
},
{
"1.2.3.4", "5.6.7.8",
[]string{"1.2.3.4/30", "1.2.3.8/29", "1.2.3.16/28", "1.2.3.32/27", "1.2.3.64/26", "1.2.3.128/25", "1.2.4.0/22", "1.2.8.0/21", "1.2.16.0/20", "1.2.32.0/19", "1.2.64.0/18", "1.2.128.0/17", "1.3.0.0/16", "1.4.0.0/14", "1.8.0.0/13", "1.16.0.0/12", "1.32.0.0/11", "1.64.0.0/10", "1.128.0.0/9", "2.0.0.0/7", "4.0.0.0/8", "5.0.0.0/14", "5.4.0.0/15", "5.6.0.0/22", "5.6.4.0/23", "5.6.6.0/24", "5.6.7.0/29", "5.6.7.8/32"},
},
{
"255.255.255.255", "255.255.255.255",
[]string{"255.255.255.255/32"},
},
{
"0.0.0.0", "255.255.255.255",
[]string{"0.0.0.0/0"},
},
{
"0.0.0.1", "255.255.255.254",
[]string{"0.0.0.1/32", "0.0.0.2/31", "0.0.0.4/30", "0.0.0.8/29", "0.0.0.16/28", "0.0.0.32/27", "0.0.0.64/26", "0.0.0.128/25", "0.0.1.0/24", "0.0.2.0/23", "0.0.4.0/22", "0.0.8.0/21", "0.0.16.0/20", "0.0.32.0/19", "0.0.64.0/18", "0.0.128.0/17", "0.1.0.0/16", "0.2.0.0/15", "0.4.0.0/14", "0.8.0.0/13", "0.16.0.0/12", "0.32.0.0/11", "0.64.0.0/10", "0.128.0.0/9", "1.0.0.0/8", "2.0.0.0/7", "4.0.0.0/6", "8.0.0.0/5", "16.0.0.0/4", "32.0.0.0/3", "64.0.0.0/2", "128.0.0.0/2", "192.0.0.0/3", "224.0.0.0/4", "240.0.0.0/5", "248.0.0.0/6", "252.0.0.0/7", "254.0.0.0/8", "255.0.0.0/9", "255.128.0.0/10", "255.192.0.0/11", "255.224.0.0/12", "255.240.0.0/13", "255.248.0.0/14", "255.252.0.0/15", "255.254.0.0/16", "255.255.0.0/17", "255.255.128.0/18", "255.255.192.0/19", "255.255.224.0/20", "255.255.240.0/21", "255.255.248.0/22", "255.255.252.0/23", "255.255.254.0/24", "255.255.255.0/25", "255.255.255.128/26", "255.255.255.192/27", "255.255.255.224/28", "255.255.255.240/29", "255.255.255.248/30", "255.255.255.252/31", "255.255.255.254/32"},
},
// IPv6 prefixes
{
"2001::", "2001:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
[]string{"2001::/16"},
},
{
"2001:db8:1::", "2001:db8:2::",
[]string{"2001:db8:1::/48", "2001:db8:2::/128"},
},
{
"ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
[]string{"ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff/128"},
},
{
"::", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
[]string{"::/0"},
},
{
"::1", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffe",
[]string{"::1/128", "::2/127", "::4/126", "::8/125", "::10/124", "::20/123", "::40/122", "::80/121", "::100/120", "::200/119", "::400/118", "::800/117", "::1000/116", "::2000/115", "::4000/114", "::8000/113", "::1:0/112", "::2:0/111", "::4:0/110", "::8:0/109", "::10:0/108", "::20:0/107", "::40:0/106", "::80:0/105", "::100:0/104", "::200:0/103", "::400:0/102", "::800:0/101", "::1000:0/100", "::2000:0/99", "::4000:0/98", "::8000:0/97", "::1:0:0/96", "::2:0:0/95", "::4:0:0/94", "::8:0:0/93", "::10:0:0/92", "::20:0:0/91", "::40:0:0/90", "::80:0:0/89", "::100:0:0/88", "::200:0:0/87", "::400:0:0/86", "::800:0:0/85", "::1000:0:0/84", "::2000:0:0/83", "::4000:0:0/82", "::8000:0:0/81", "::1:0:0:0/80", "::2:0:0:0/79", "::4:0:0:0/78", "::8:0:0:0/77", "::10:0:0:0/76", "::20:0:0:0/75", "::40:0:0:0/74", "::80:0:0:0/73", "::100:0:0:0/72", "::200:0:0:0/71", "::400:0:0:0/70", "::800:0:0:0/69", "::1000:0:0:0/68", "::2000:0:0:0/67", "::4000:0:0:0/66", "::8000:0:0:0/65", "0:0:0:1::/64", "0:0:0:2::/63", "0:0:0:4::/62", "0:0:0:8::/61", "0:0:0:10::/60", "0:0:0:20::/59", "0:0:0:40::/58", "0:0:0:80::/57", "0:0:0:100::/56", "0:0:0:200::/55", "0:0:0:400::/54", "0:0:0:800::/53", "0:0:0:1000::/52", "0:0:0:2000::/51", "0:0:0:4000::/50", "0:0:0:8000::/49", "0:0:1::/48", "0:0:2::/47", "0:0:4::/46", "0:0:8::/45", "0:0:10::/44", "0:0:20::/43", "0:0:40::/42", "0:0:80::/41", "0:0:100::/40", "0:0:200::/39", "0:0:400::/38", "0:0:800::/37", "0:0:1000::/36", "0:0:2000::/35", "0:0:4000::/34", "0:0:8000::/33", "0:1::/32", "0:2::/31", "0:4::/30", "0:8::/29", "0:10::/28", "0:20::/27", "0:40::/26", "0:80::/25", "0:100::/24", "0:200::/23", "0:400::/22", "0:800::/21", "0:1000::/20", "0:2000::/19", "0:4000::/18", "0:8000::/17", "1::/16", "2::/15", "4::/14", "8::/13", "10::/12", "20::/11", "40::/10", "80::/9", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ff00/121", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ff80/122", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffc0/123", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffe0/124", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:fff0/125", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:fff8/126", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffc/127", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:fffe/128", "ffff:ffff:ffff:ffff:ffff:ffff:ffff::/113", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:8000/114", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:c000/115", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:e000/116", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:f000/117", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:f800/118", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:fc00/119", "ffff:ffff:ffff:ffff:ffff:ffff:ffff:fe00/120", "ffff:ffff:ffff:ffff:ffff:ffff:ff00::/105", "ffff:ffff:ffff:ffff:ffff:ffff:ff80::/106", "ffff:ffff:ffff:ffff:ffff:ffff:ffc0::/107", "ffff:ffff:ffff:ffff:ffff:ffff:ffe0::/108", "ffff:ffff:ffff:ffff:ffff:ffff:fff0::/109", "ffff:ffff:ffff:ffff:ffff:ffff:fff8::/110", "ffff:ffff:ffff:ffff:ffff:ffff:fffc::/111", "ffff:ffff:ffff:ffff:ffff:ffff:fffe::/112", "ffff:ffff:ffff:ffff:ffff:ffff::/97", "ffff:ffff:ffff:ffff:ffff:ffff:8000::/98", "ffff:ffff:ffff:ffff:ffff:ffff:c000::/99", "ffff:ffff:ffff:ffff:ffff:ffff:e000::/100", "ffff:ffff:ffff:ffff:ffff:ffff:f000::/101", "ffff:ffff:ffff:ffff:ffff:ffff:f800::/102", "ffff:ffff:ffff:ffff:ffff:ffff:fc00::/103", "ffff:ffff:ffff:ffff:ffff:ffff:fe00::/104", "ffff:ffff:ffff:ffff:ffff:ff00::/89", "ffff:ffff:ffff:ffff:ffff:ff80::/90", "ffff:ffff:ffff:ffff:ffff:ffc0::/91", "ffff:ffff:ffff:ffff:ffff:ffe0::/92", "ffff:ffff:ffff:ffff:ffff:fff0::/93", "ffff:ffff:ffff:ffff:ffff:fff8::/94", "ffff:ffff:ffff:ffff:ffff:fffc::/95", "ffff:ffff:ffff:ffff:ffff:fffe::/96", "ffff:ffff:ffff:ffff:ffff::/81", "ffff:ffff:ffff:ffff:ffff:8000::/82", "ffff:ffff:ffff:ffff:ffff:c000::/83", "ffff:ffff:ffff:ffff:ffff:e000::/84", "ffff:ffff:ffff:ffff:ffff:f000::/85", "ffff:ffff:ffff:ffff:ffff:f800::/86", "ffff:ffff:ffff:ffff:ffff:fc00::/87", "ffff:ffff:ffff:ffff:ffff:fe00::/88", "ffff:ffff:ffff:ffff:ff00::/73", "ffff:ffff:ffff:ffff:ff80::/74", "ffff:ffff:ffff:ffff:ffc0::/75", "ffff:ffff:ffff:ffff:ffe0::/76", "ffff:ffff:ffff:ffff:fff0::/77", "ffff:ffff:ffff:ffff:fff8::/78", "ffff:ffff:ffff:ffff:fffc::/79", "ffff:ffff:ffff:ffff:fffe::/80", "ffff:ffff:ffff:ffff::/65", "ffff:ffff:ffff:ffff:8000::/66", "ffff:ffff:ffff:ffff:c000::/67", "ffff:ffff:ffff:ffff:e000::/68", "ffff:ffff:ffff:ffff:f000::/69", "ffff:ffff:ffff:ffff:f800::/70", "ffff:ffff:ffff:ffff:fc00::/71", "ffff:ffff:ffff:ffff:fe00::/72", "ffff:ffff:ffff:ff00::/57", "ffff:ffff:ffff:ff80::/58", "ffff:ffff:ffff:ffc0::/59", "ffff:ffff:ffff:ffe0::/60", "ffff:ffff:ffff:fff0::/61", "ffff:ffff:ffff:fff8::/62", "ffff:ffff:ffff:fffc::/63", "ffff:ffff:ffff:fffe::/64", "ffff:ffff:ffff::/49", "ffff:ffff:ffff:8000::/50", "ffff:ffff:ffff:c000::/51", "ffff:ffff:ffff:e000::/52", "ffff:ffff:ffff:f000::/53", "ffff:ffff:ffff:f800::/54", "ffff:ffff:ffff:fc00::/55", "ffff:ffff:ffff:fe00::/56", "ffff:ffff:ff00::/41", "ffff:ffff:ff80::/42", "ffff:ffff:ffc0::/43", "ffff:ffff:ffe0::/44", "ffff:ffff:fff0::/45", "ffff:ffff:fff8::/46", "ffff:ffff:fffc::/47", "ffff:ffff:fffe::/48", "ffff:ffff::/33", "ffff:ffff:8000::/34", "ffff:ffff:c000::/35", "ffff:ffff:e000::/36", "ffff:ffff:f000::/37", "ffff:ffff:f800::/38", "ffff:ffff:fc00::/39", "ffff:ffff:fe00::/40", "ffff:ff00::/25", "ffff:ff80::/26", "ffff:ffc0::/27", "ffff:ffe0::/28", "ffff:fff0::/29", "ffff:fff8::/30", "ffff:fffc::/31", "ffff:fffe::/32", "ffff::/17", "ffff:8000::/18", "ffff:c000::/19", "ffff:e000::/20", "ffff:f000::/21", "ffff:f800::/22", "ffff:fc00::/23", "ffff:fe00::/24", "ff00::/9", "ff80::/10", "ffc0::/11", "ffe0::/12", "fff0::/13", "fff8::/14", "fffc::/15", "fffe::/16", "100::/8", "200::/7", "400::/6", "800::/5", "1000::/4", "2000::/3", "4000::/2", "8000::/2", "c000::/3", "e000::/4", "f000::/5", "f800::/6", "fc00::/7", "fe00::/8"},
},
}
func TestSummarize(t *testing.T) {
for i, tt := range summarizeTests {
fip := net.ParseIP(tt.first)
if fip == nil {
t.Fatalf("non-IP address: %s", tt.first)
}
lip := net.ParseIP(tt.last)
if lip == nil {
t.Fatalf("non-IP address: %s", tt.last)
}
wants := toPrefixes(tt.wants)
sort.Sort(byAddrLen(wants))
out := ipaddr.Summarize(fip, lip)
if !reflect.DeepEqual(out, wants) {
t.Errorf("#%d: got %v; want %v", i, out, wants)
}
}
ipaddr.Summarize(nil, nil)
}
var supernetTests = []struct {
in []string
want string
}{
// IPv4 prefixes
{
[]string{"192.168.0.0/24", "192.168.1.0/24"},
"192.168.0.0/23",
},
{
[]string{"192.168.0.0/24", "192.168.1.0/24", "192.168.2.0/25"},
"192.168.0.0/22",
},
{
[]string{"118.168.101.0/27", "70.168.100.0/17", "102.168.103.0/26"},
"64.0.0.0/2",
},
{
[]string{"10.40.101.1/32", "10.40.102.1/32", "11.40.103.1/32"},
"10.0.0.0/7",
},
{
[]string{"192.168.200.0/24", "192.168.0.0/24", "192.168.1.0/24", "192.168.2.0/24", "192.168.100.0/24"},
"192.168.0.0/16",
},
// IPv4 prefixes, no supernet
{
[]string{"128.0.0.0/24", "192.0.0.0/24", "65.0.0.0/24"},
"",
},
{
[]string{"0.0.0.0/0", "192.0.0.0/24", "65.0.0.0/24"},
"",
},
// IPv6 prefixes
{
[]string{"2001:db8:1::/32", "2001:db8:2::/39"},
"2001:db8::/32",
},
{
[]string{"2013:db8:1::1/64", "192.168.0.1/24", "2013:db8:2::1/64"},
"2013:db8::/46",
},
// IPv6 prefixes, no supernet
{
[]string{"8001:db8:1::/34", "2013:db8:2::/32"},
"",
},
{
[]string{"2013:db8:1::1/64", "192.168.0.1/24", "8001:db8:1::1/64"},
"",
},
{
[]string{"192.168.0.1/24", "2013:db8:1::1/64", "192.168.1.1/24"},
"192.168.0.0/23",
},
{
[]string{"192.168.0.1/24", "2013:db8:1::1/64", "1.1.1.1/24"},
"",
},
}
func TestSupernet(t *testing.T) {
for i, tt := range supernetTests {
in, orig := toPrefixes(tt.in), toPrefixes(tt.in)
want := toPrefix(tt.want)
out := ipaddr.Supernet(in)
if !reflect.DeepEqual(out, want) {
t.Errorf("#%d: got %v; want %v", i, out, want)
}
if !reflect.DeepEqual(in, orig) {
t.Errorf("#%d: %v is corrupted; want %v", i, in, orig)
}
}
ipaddr.Supernet(nil)
}
var prefixBinaryMarshalerUnmarshalerTests = []struct {
in, tmp string
want []byte
}{
{"0.0.0.0/0", "1.2.3.4/32", []byte{0}},
{"192.0.0.0/7", "5.6.7.8/32", []byte{7, 192}},
{"192.168.0.0/23", "0.0.0.0/0", []byte{23, 192, 168, 0}},
{"::/0", "2001:db8::/8", []byte{0}},
{"2001::/8", "2001:db8::/8", []byte{8, 0x20}},
{"2001:db8:0:cafe:babe::/66", "::/0", []byte{66, 0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0xca, 0xfe, 0x80}},
{"2001:db8:0:cafe:babe::3/127", "::/0", []byte{127, 0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0xca, 0xfe, 0xba, 0xbe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}},
}
func TestPrefixBinaryMarshalerUnmarshaler(t *testing.T) {
for i, tt := range prefixBinaryMarshalerUnmarshalerTests {
p1 := toPrefix(tt.in)
out, err := p1.MarshalBinary()
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(out, tt.want) {
t.Errorf("#%d: got %v; want %v", i, out, tt.want)
}
p2 := toPrefix(tt.tmp)
if err := p2.UnmarshalBinary(tt.want); err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(p2, p1) {
t.Errorf("#%d: got %v; want %v", i, p2, p1)
}
}
}
var prefixContainsTests = []struct {
in string
ip net.IP
want bool
}{
{"192.168.0.0/24", net.ParseIP("192.168.0.1"), true},
{"192.168.0.0/24", net.ParseIP("192.168.1.1"), false},
{"2001:db8:f001::/48", net.ParseIP("2001:db8:f001::1"), true},
{"2001:db8:f001::/48", net.ParseIP("2001:db8:f002::1"), false},
}
func TestPrefixContains(t *testing.T) {
for i, tt := range prefixContainsTests {
p := toPrefix(tt.in)
if out := p.Contains(tt.ip); out != tt.want {
t.Errorf("#%d: got %v; want %v", i, out, tt.want)
}
}
}
var prefixExcludeTests = []struct {
in, excl string
}{
{"10.0.0.0/8", "10.1.0.0/16"},
{"192.168.1.0/24", "192.168.1.0/32"},
{"2001:db8:f001::/48", "2001:db8:f001:f002::/56"},
{"2001:db8:f001:f002::/64", "2001:db8:f001:f002::cafe/128"},
}
func TestPrefixExclude(t *testing.T) {
for i, tt := range prefixExcludeTests {
p, excl := toPrefix(tt.in), toPrefix(tt.excl)
ps := p.Exclude(excl)
if len(ps) != excl.Len()-p.Len() {
for _, p := range ps {
t.Logf("subnet: %v", p)
}
t.Errorf("#%d: got %v; want %v", i, len(ps), excl.Len()-p.Len())
}
diff, sum := big.NewInt(0), big.NewInt(0)
diff.Sub(p.NumNodes(), excl.NumNodes())
for _, p := range ps {
sum.Add(sum, p.NumNodes())
}
if diff.String() != sum.String() {
for _, p := range ps {
t.Logf("subnet: %v", p)
}
t.Errorf("#%d: got %v; want %v", i, sum.String(), diff.String())
}
}
}
var prefixLastTests = []struct {
in string
l int
ip, lip net.IP
}{
{"192.168.255.255/16", 16, net.ParseIP("192.168.0.0"), net.ParseIP("192.168.255.255")},
{"192.168.0.255/24", 24, net.ParseIP("192.168.0.0"), net.ParseIP("192.168.0.255")},
{"2001:db8:0:0:1:2:3:cafe/64", 64, net.ParseIP("2001:db8::"), net.ParseIP("2001:db8::ffff:ffff:ffff:ffff")},
{"2001:db8::ca7e/121", 121, net.ParseIP("2001:db8::ca00"), net.ParseIP("2001:db8::ca7f")},
}
func TestPrefixLast(t *testing.T) {
for i, tt := range prefixLastTests {
p := toPrefix(tt.in)
if !p.IP.Equal(tt.ip) {
t.Errorf("#%d: got %v; want %v", i, p.IP, tt.ip)
}
if p.Len() != tt.l {
t.Errorf("#%d: got %v; want %v", i, p.Len(), tt.l)
}
if !p.Last().Equal(tt.lip) {
t.Errorf("#%d: got %v; want %v", i, p.Last(), tt.lip)
}
}
}
var prefixMaskTests = []struct {
in string
m net.IPMask
}{
{"192.168.255.255/16", net.CIDRMask(16, ipaddr.IPv4PrefixLen)},
{"2001:db8::/64", net.CIDRMask(64, ipaddr.IPv6PrefixLen)},
}
func TestPrefixMask(t *testing.T) {
inverse := func(s net.IPMask) net.IPMask {
d := make(net.IPMask, len(s))
for i := range s {
d[i] = ^s[i]
}
return d
}
for i, tt := range prefixMaskTests {
p := toPrefix(tt.in)
if bytes.Compare(p.Mask, tt.m) != 0 {
t.Errorf("#%d: got %v; want %v", i, p.Mask, tt.m)
}
m := inverse(tt.m)
if bytes.Compare(p.Hostmask(), m) != 0 {
t.Errorf("#%d: got %v; want %v", i, p.Hostmask(), m)
}
}
}
var prefixNumNodesTests = []struct {
in string
n *big.Int
}{
{"192.168.0.0/0", big.NewInt(1 << 32)},
{"192.168.0.0/16", big.NewInt(1 << 16)},
{"192.168.0.0/32", big.NewInt(1)},
{"2001:db8::/0", new(big.Int).Exp(big.NewInt(2), big.NewInt(128), nil)},
{"2001:db8::/32", new(big.Int).Exp(big.NewInt(2), big.NewInt(96), nil)},
{"2001:db8::/64", new(big.Int).Exp(big.NewInt(2), big.NewInt(64), nil)},
{"2001:db8::/96", new(big.Int).Exp(big.NewInt(2), big.NewInt(32), nil)},
{"2001:db8::/128", new(big.Int).Exp(big.NewInt(2), big.NewInt(0), nil)},
}
func TestPrefixNumNodes(t *testing.T) {
for i, tt := range prefixNumNodesTests {
p := toPrefix(tt.in)
if p.NumNodes().String() != tt.n.String() {
t.Errorf("#%d: got %v; want %v", i, p.NumNodes().String(), tt.n.String())
}
}
}
var prefixOverlapsTests = []struct {
in string
others []string
want bool
}{
{"192.168.0.0/24", []string{"192.168.0.0/25", "192.168.0.64/26"}, true},
{"192.168.0.0/26", []string{"192.168.1.112/28", "192.168.1.128/28"}, false},
{"2001:db8:f001::/48", []string{"2001:db8:f001:4000::/49", "2001:db8:f001:8000::/49"}, true},
{"2001:db8:f001::/48", []string{"2001:db8:f002:4000::/49", "2001:db8:f002:8000::/49"}, false},
}
func TestPrefixOverlaps(t *testing.T) {
for i, tt := range prefixOverlapsTests {
p1 := toPrefix(tt.in)
others := toPrefixes(tt.others)
p2 := ipaddr.Supernet(others)
if out := p1.Overlaps(p2); out != tt.want {
t.Errorf("#%d: got %v; want %v", i, out, tt.want)
}
if out := p2.Overlaps(p1); out != tt.want {
t.Errorf("#%d: got %v; want %v", i, out, tt.want)
}
}
}
var prefixSubnetsTests = []struct {
in string
l int
n int
}{
{"0.0.0.0/29", 29, 2},
{"192.168.254.128/25", 25, 4},
{"2001:db8::/65", 65, 8},
{"2001:db8::/51", 51, 9},
{"2001:db8::/32", 32, 1},
{"2001:db8::/13", 13, 7},
{"2001:db8::/64", 64, 3},
{"2001:db8::/61", 61, 5},
{"2001:db8::80/121", 121, 6},
}
func TestPrefixSubnets(t *testing.T) {
for i, tt := range prefixSubnetsTests {
p := toPrefix(tt.in)
ps := p.Subnets(tt.n)
if len(ps) != 1<<uint(tt.n) {
t.Errorf("#%d: got %v; want %v", i, len(ps), 1<<uint(tt.n))
}
for _, p := range ps {
if p.Len() != tt.l+tt.n {
t.Errorf("#%d: got %v; want %v", i, p.Len(), tt.l+tt.n)
}
}
if super := ipaddr.Supernet(ps); super == nil {
for _, p := range ps {
t.Logf("subnet: %v", p)
}
t.Errorf("#%d: got %v; want %v", i, super, p)
}
}
}
var prefixTextMarshalerUnmarshalerTests = []struct {
in, tmp string
out []byte
}{
{"192.168.0.0/24", "0.0.0.0/0", []byte("192.168.0.0/24")},
{"2001:db8::cafe/127", "::/0", []byte("2001:db8::cafe/127")},
}
func TestPrefixTextMarshalerUnmarshaler(t *testing.T) {
for i, tt := range prefixTextMarshalerUnmarshalerTests {
p1 := toPrefix(tt.in)
out, err := p1.MarshalText()
if err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(out, tt.out) {
t.Errorf("#%d: got %v; want %v", i, out, tt.out)
}
p2 := toPrefix(tt.tmp)
if err := p2.UnmarshalText(tt.out); err != nil {
t.Fatal(err)
}
if !reflect.DeepEqual(p2, p1) {
t.Errorf("#%d: got %v; want %v", i, p2, p1)
}
}
}