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package dhcpv6
import (
"errors"
"fmt"
"reflect"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/stretchr/testify/require"
"github.com/u-root/uio/uio"
)
func TestVendorClassParseAndGetter(t *testing.T) {
for i, tt := range []struct {
buf []byte
err error
want []*OptVendorClass
}{
{
buf: []byte{
0, 16, // Vendor Class
0, 14, // length
0, 0, 0, 16,
0, 4,
'S', 'L', 'A', 'M',
0, 2,
'h', 'h',
},
want: []*OptVendorClass{
&OptVendorClass{
EnterpriseNumber: 16,
Data: [][]byte{[]byte("SLAM"), []byte("hh")},
},
},
},
{
buf: []byte{
0, 16,
0, 0,
},
err: uio.ErrBufferTooShort,
},
{
buf: []byte{
0, 16,
0, 4,
0, 0, 0, 6,
},
err: uio.ErrBufferTooShort,
},
{
buf: []byte{0, 16, 0},
err: uio.ErrUnreadBytes,
},
} {
t.Run(fmt.Sprintf("%d", i), func(t *testing.T) {
var mo MessageOptions
if err := mo.FromBytes(tt.buf); !errors.Is(err, tt.err) {
t.Errorf("FromBytes = %v, want %v", err, tt.err)
}
if got := mo.VendorClasses(); !reflect.DeepEqual(got, tt.want) {
t.Errorf("VendorClass = %v, want %v", got, tt.want)
}
for _, v := range tt.want {
if got := mo.VendorClass(v.EnterpriseNumber); !reflect.DeepEqual(got, v.Data) {
t.Errorf("VendorClass(%d) = %v, want %v", v.EnterpriseNumber, got, v.Data)
}
}
if got := mo.VendorClass(100); got != nil {
t.Errorf("VendorClass(100) = %v, want nil", got)
}
if tt.want != nil {
var m MessageOptions
for _, o := range tt.want {
m.Add(o)
}
got := m.ToBytes()
if diff := cmp.Diff(tt.buf, got); diff != "" {
t.Errorf("ToBytes mismatch (-want, +got): %s", diff)
}
}
})
}
}
func TestOptVendorClassString(t *testing.T) {
data := []byte{
0xaa, 0xbb, 0xcc, 0xdd, // EnterpriseNumber
0, 9, 'l', 'i', 'n', 'u', 'x', 'b', 'o', 'o', 't',
0, 4, 't', 'e', 's', 't',
}
var opt OptVendorClass
err := opt.FromBytes(data)
require.NoError(t, err)
str := opt.String()
require.Contains(
t,
str,
"EnterpriseNumber=2864434397",
"String() should contain the enterprisenum",
)
require.Contains(
t,
str,
"Data=[linuxboot, test]",
"String() should contain the list of vendor classes",
)
}
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