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package dhcpv4
import (
"net"
"testing"
"github.com/stretchr/testify/require"
)
func TestParseIPs(t *testing.T) {
var i IPs
data := []byte{
192, 168, 0, 10, // DNS #1
192, 168, 0, 20, // DNS #2
}
err := i.FromBytes(data)
require.NoError(t, err)
servers := []net.IP{
net.IP{192, 168, 0, 10},
net.IP{192, 168, 0, 20},
}
require.Equal(t, servers, []net.IP(i))
// Bad length
data = []byte{1, 1, 1}
err = i.FromBytes(data)
require.Error(t, err, "should get error from bad length")
// RFC2132 requires that at least one IP is specified for each IP field.
err = i.FromBytes([]byte{})
require.Error(t, err)
}
func TestOptDomainNameServer(t *testing.T) {
o := OptDNS(net.IPv4(192, 168, 0, 1), net.IPv4(192, 168, 0, 10))
require.Equal(t, OptionDomainNameServer, o.Code)
require.Equal(t, []byte{192, 168, 0, 1, 192, 168, 0, 10}, o.Value.ToBytes())
require.Equal(t, "Domain Name Server: 192.168.0.1, 192.168.0.10", o.String())
}
func TestGetDomainNameServer(t *testing.T) {
ips := []net.IP{
net.IP{192, 168, 0, 1},
net.IP{192, 168, 0, 10},
}
m, _ := New(WithOption(OptDNS(ips...)))
require.Equal(t, ips, m.DNS())
m, _ = New()
require.Nil(t, m.DNS())
}
func TestOptNTPServers(t *testing.T) {
o := OptNTPServers(net.IPv4(192, 168, 0, 1), net.IPv4(192, 168, 0, 10))
require.Equal(t, OptionNTPServers, o.Code)
require.Equal(t, []byte{192, 168, 0, 1, 192, 168, 0, 10}, o.Value.ToBytes())
require.Equal(t, "NTP Servers: 192.168.0.1, 192.168.0.10", o.String())
}
func TestGetNTPServers(t *testing.T) {
ips := []net.IP{
net.IP{192, 168, 0, 1},
net.IP{192, 168, 0, 10},
}
m, _ := New(WithOption(OptNTPServers(ips...)))
require.Equal(t, ips, m.NTPServers())
m, _ = New()
require.Nil(t, m.NTPServers())
}
func TestOptRouter(t *testing.T) {
o := OptRouter(net.IPv4(192, 168, 0, 1), net.IPv4(192, 168, 0, 10))
require.Equal(t, OptionRouter, o.Code)
require.Equal(t, []byte{192, 168, 0, 1, 192, 168, 0, 10}, o.Value.ToBytes())
require.Equal(t, "Router: 192.168.0.1, 192.168.0.10", o.String())
}
func TestGetRouter(t *testing.T) {
ips := []net.IP{
net.IP{192, 168, 0, 1},
net.IP{192, 168, 0, 10},
}
m, _ := New(WithOption(OptRouter(ips...)))
require.Equal(t, ips, m.Router())
m, _ = New()
require.Nil(t, m.Router())
}
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