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|
package dhcpv6
import (
"bytes"
"testing"
)
func TestBytesToTransactionID(t *testing.T) {
// only the first three bytes should be used
tid, err := BytesToTransactionID([]byte{0x11, 0x22, 0x33, 0xaa})
if err != nil {
t.Fatal(err)
}
if tid == nil {
t.Fatal("Invalid Transaction ID. Should not be nil")
}
if *tid != 0x112233 {
t.Fatalf("Invalid Transaction ID. Expected 0x%x, got 0x%x", 0x112233, *tid)
}
}
func TestBytesToTransactionIDShortData(t *testing.T) {
// short sequence, less than three bytes
tid, err := BytesToTransactionID([]byte{0x11, 0x22})
if err == nil {
t.Fatal("Expected non-nil error, got nil instead")
}
if tid != nil {
t.Errorf("Expected nil Transaction ID, got %v instead", *tid)
}
}
func TestGenerateTransactionID(t *testing.T) {
tid, err := GenerateTransactionID()
if err != nil {
t.Fatal(err)
}
if tid == nil {
t.Fatal("Expected non-nil Transaction ID, got nil instead")
}
if *tid > 0xffffff {
// TODO this should be better tested by mocking the random generator
t.Fatalf("Invalid Transaction ID: should be smaller than 0xffffff. Got 0x%x instead", *tid)
}
}
func TestNewMessage(t *testing.T) {
d, err := NewMessage()
if err != nil {
t.Fatal(err)
}
if d == nil {
t.Fatal("Expected non-nil DHCPv6, got nil instead")
}
if d.messageType != SOLICIT {
t.Fatalf("Invalid message type. Expected %v, got %v", SOLICIT, d.messageType)
}
if d.transactionID == 0 {
t.Fatal("Invalid Transaction ID, expected non-zero, got zero")
}
if len(d.options) != 0 {
t.Fatalf("Invalid options: expected none, got %v", len(d.options))
}
}
func TestSettersAndGetters(t *testing.T) {
d := DHCPv6Message{}
// Message
d.SetMessage(SOLICIT)
msg := d.Type()
if msg != SOLICIT {
t.Fatalf("Invalid message type. Expected %v, got %v", SOLICIT, msg)
}
d.SetMessage(ADVERTISE)
msg = d.Type()
if msg != ADVERTISE {
t.Fatalf("Invalid message type. Expected %v, got %v", ADVERTISE, msg)
}
// TransactionID
d.SetTransactionID(12345)
tid := d.TransactionID()
if tid != 12345 {
t.Fatalf("Invalid Transaction ID. Expected %v, got %v", 12345, tid)
}
// Options
opts := d.Options()
if len(opts) != 0 {
t.Fatalf("Invalid Options. Expected empty array, got %v", opts)
}
opt := OptionGeneric{OptionCode: 0, OptionData: []byte{}}
d.SetOptions([]Option{&opt})
opts = d.Options()
if len(opts) != 1 {
t.Fatalf("Invalid Options. Expected one-element array, got %v", len(opts))
}
if _, ok := opts[0].(*OptionGeneric); !ok {
t.Fatalf("Invalid Options. Expected one OptionGeneric, got %v", opts[0])
}
}
func TestAddOption(t *testing.T) {
d := DHCPv6Message{}
opts := d.Options()
if len(opts) != 0 {
t.Fatalf("Invalid Options. Expected empty array, got %v", opts)
}
opt := OptionGeneric{OptionCode: 0, OptionData: []byte{}}
d.AddOption(&opt)
opts = d.Options()
if len(opts) != 1 {
t.Fatalf("Invalid Options. Expected one-element array, got %v", len(opts))
}
if _, ok := opts[0].(*OptionGeneric); !ok {
t.Fatalf("Invalid Options. Expected one OptionGeneric, got %v", opts[0])
}
}
func TestToBytes(t *testing.T) {
d := DHCPv6Message{}
d.SetMessage(SOLICIT)
d.SetTransactionID(0xabcdef)
opt := OptionGeneric{OptionCode: 0, OptionData: []byte{}}
d.AddOption(&opt)
toBytes := d.ToBytes()
expected := []byte{01, 0xab, 0xcd, 0xef, 0x00, 0x00, 0x00, 0x00}
if !bytes.Equal(toBytes, expected) {
t.Fatalf("Invalid ToBytes result. Expected %v, got %v", expected, toBytes)
}
}
func TestFromAndToBytes(t *testing.T) {
expected := []byte{01, 0xab, 0xcd, 0xef, 0x00, 0x00, 0x00, 0x00}
d, err := FromBytes(expected)
if err != nil {
t.Fatal(err)
}
toBytes := d.ToBytes()
if !bytes.Equal(toBytes, expected) {
t.Fatalf("Invalid ToBytes result. Expected %v, got %v", expected, toBytes)
}
}
// TODO test NewSolicit
// test String and Summary
|
