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package dhcpv6
import (
"errors"
"fmt"
"reflect"
"testing"
"time"
"github.com/google/go-cmp/cmp"
"github.com/u-root/uio/uio"
)
func TestElapsedTimeParseAndGetter(t *testing.T) {
for i, tt := range []struct {
buf []byte
err error
want time.Duration
}{
{
buf: []byte{
0, 8, // Elapsed Time option
0, 2, // length
0, 2,
},
want: 20 * time.Millisecond,
},
{
buf: []byte{
0, 8, // Elapsed Time option
0, 1, // length
0,
},
err: uio.ErrBufferTooShort,
},
{
buf: []byte{
0, 8, // Elapsed Time option
0, 3, // length
0, 2, 2,
},
err: uio.ErrUnreadBytes,
},
{
buf: []byte{0, 8, 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.ElapsedTime(); !reflect.DeepEqual(got, tt.want) {
t.Errorf("ElapsedTime = %v, want %v", got, tt.want)
}
if tt.err == nil {
var m MessageOptions
m.Add(OptElapsedTime(tt.want))
got := m.ToBytes()
if diff := cmp.Diff(tt.buf, got); diff != "" {
t.Errorf("ToBytes mismatch (-want, +got): %s", diff)
}
}
})
}
}
func TestOptElapsedTimeString(t *testing.T) {
opt := OptElapsedTime(100 * time.Millisecond)
expected := "Elapsed Time: 100ms"
if optString := opt.String(); optString != expected {
t.Fatalf("Invalid elapsed time string. Expected %v, got %v", expected, optString)
}
}
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