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|
package util
import (
"fmt"
"net"
"reflect"
"testing"
)
func parseCIDR(n string) *net.IPNet {
_, parsedNet, _ := net.ParseCIDR(n)
return parsedNet
}
func TestNextSubnet(t *testing.T) {
type args struct {
subnet *net.IPNet
}
tests := []struct {
name string
args args
want *net.IPNet
wantErr bool
}{
{"class b", args{subnet: parseCIDR("192.168.0.0/16")}, parseCIDR("192.169.0.0/16"), false},
{"class c", args{subnet: parseCIDR("192.168.1.0/24")}, parseCIDR("192.168.2.0/24"), false},
}
for _, tt := range tests {
test := tt
t.Run(test.name, func(t *testing.T) {
got, err := NextSubnet(test.args.subnet)
if (err != nil) != test.wantErr {
t.Errorf("NextSubnet() error = %v, wantErr %v", err, test.wantErr)
return
}
if !reflect.DeepEqual(got, test.want) {
t.Errorf("NextSubnet() got = %v, want %v", got, test.want)
}
})
}
}
func TestFirstIPInSubnet(t *testing.T) {
tests := []struct {
name string
args *net.IPNet
want net.IP
wantErr bool
}{
{"class b", parseCIDR("192.168.0.0/16"), net.ParseIP("192.168.0.1"), false},
{"class c", parseCIDR("192.168.1.0/24"), net.ParseIP("192.168.1.1"), false},
{"cidr /23", parseCIDR("192.168.0.0/23"), net.ParseIP("192.168.0.1"), false},
{"cidr /25", parseCIDR("192.168.1.0/25"), net.ParseIP("192.168.1.1"), false},
{"cidr /26", parseCIDR("172.16.1.128/26"), net.ParseIP("172.16.1.129"), false},
{"class a", parseCIDR("10.0.0.0/8"), net.ParseIP("10.0.0.1"), false},
{"cidr /32", parseCIDR("192.168.255.4/32"), net.ParseIP("192.168.255.4"), false},
{"cidr /31", parseCIDR("192.168.255.4/31"), net.ParseIP("192.168.255.5"), false},
}
for _, tt := range tests {
test := tt
t.Run(test.name, func(t *testing.T) {
got, err := FirstIPInSubnet(test.args)
if (err != nil) != test.wantErr {
t.Errorf("FirstIPInSubnet() error = %v, wantErr %v", err, test.wantErr)
return
}
if !got.Equal(test.want) {
t.Errorf("FirstIPInSubnet() got = %v, want %v", got, test.want)
}
})
}
}
func TestLastIPInSubnet(t *testing.T) {
tests := []struct {
name string
args *net.IPNet
want net.IP
wantErr bool
}{
{"class b", parseCIDR("192.168.0.0/16"), net.ParseIP("192.168.255.255"), false},
{"class c", parseCIDR("192.168.1.0/24"), net.ParseIP("192.168.1.255"), false},
{"cidr /23", parseCIDR("192.168.0.0/23"), net.ParseIP("192.168.1.255"), false},
{"cidr /25", parseCIDR("192.168.1.0/25"), net.ParseIP("192.168.1.127"), false},
{"cidr /26", parseCIDR("172.16.1.128/26"), net.ParseIP("172.16.1.191"), false},
{"class a", parseCIDR("10.0.0.0/8"), net.ParseIP("10.255.255.255"), false},
{"cidr /32", parseCIDR("192.168.255.4/32"), net.ParseIP("192.168.255.4"), false},
{"cidr /31", parseCIDR("192.168.255.4/31"), net.ParseIP("192.168.255.5"), false},
}
for _, tt := range tests {
test := tt
t.Run(test.name, func(t *testing.T) {
got, err := LastIPInSubnet(test.args)
if (err != nil) != test.wantErr {
t.Errorf("LastIPInSubnet() error = %v, wantErr %v", err, test.wantErr)
return
}
if !got.Equal(test.want) {
t.Errorf("LastIPInSubnet() got = %v, want %v", got, test.want)
}
})
}
}
func TestGetRandomIPv6Subnet(t *testing.T) {
for i := 0; i < 1000; i++ {
t.Run(fmt.Sprintf("GetRandomIPv6Subnet %d", i), func(t *testing.T) {
sub, err := GetRandomIPv6Subnet()
if err != nil {
t.Errorf("GetRandomIPv6Subnet() error should be nil: %v", err)
return
}
if sub.IP.To4() != nil {
t.Errorf("ip %s is not an ipv6 address", sub.IP)
}
if sub.IP[0] != 0xfd {
t.Errorf("ipv6 %s does not start with fd", sub.IP)
}
ones, bytes := sub.Mask.Size()
if ones != 64 || bytes != 128 {
t.Errorf("wrong network mask %v, it should be /64", sub.Mask)
}
})
}
}
|
