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package dhcpv6
import (
"net"
"testing"
"github.com/stretchr/testify/require"
)
func TestParseOptDNSRecursiveNameServer(t *testing.T) {
data := []byte{
0x2a, 0x03, 0x28, 0x80, 0xff, 0xfe, 0x00, 0x0c, 0xfa, 0xce, 0xb0, 0x0c, 0x00, 0x00, 0x00, 0x35,
}
expected := []net.IP{
net.IP(data),
}
opt, err := ParseOptDNSRecursiveNameServer(data)
require.NoError(t, err)
require.Equal(t, opt.NameServers, expected)
require.Equal(t, opt.Length(), 16)
}
func TestOptDNSRecursiveNameServerToBytes(t *testing.T) {
ns1 := net.ParseIP("2a03:2880:fffe:c:face:b00c:0:35")
ns2 := net.ParseIP("2001:4860:4860::8888")
nameservers := []net.IP{ns1, ns2}
expected := []byte{
0, 23, // DNS_RECURSIVE_NAME_SERVER
0, 32, // length
}
expected = append(expected, []byte(ns1)...)
expected = append(expected, []byte(ns2)...)
opt := OptDNSRecursiveNameServer{NameServers: nameservers}
require.Equal(t, opt.ToBytes(), expected)
}
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