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package util
import (
"net"
"testing"
)
func parseCIDR(n string) *net.IPNet {
_, parsedNet, _ := net.ParseCIDR(n)
return parsedNet
}
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)
}
})
}
}
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