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package dhcpv6
import (
"bytes"
"errors"
"fmt"
"reflect"
"strings"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/u-root/uio/uio"
)
func TestBootFileParamLargeParameter(t *testing.T) {
param := []string{
"foo=bar",
strings.Repeat("a", 1<<16),
}
var m MessageOptions
m.Add(OptBootFileParam(param...))
want := append([]byte{
0, 60, // Boot File Param
0, 9, // length
0, 7,
}, []byte("foo=bar")...)
got := m.ToBytes()
if diff := cmp.Diff(want, got); diff != "" {
t.Errorf("ToBytes mismatch (-want, +got): %s", diff)
}
}
func joinBytes(p ...[]byte) []byte {
return bytes.Join(p, nil)
}
func TestBootFileParamParseAndGetter(t *testing.T) {
for i, tt := range []struct {
buf []byte
err error
want []string
}{
{
buf: joinBytes([]byte{
0, 60, // Boot File Param
0, 25, // length
0, 14,
}, []byte("root=/dev/sda1"), []byte{0, 7}, []byte("foo=bar")),
want: []string{"root=/dev/sda1", "foo=bar"},
},
{
buf: nil,
},
{
buf: []byte{0, 60, 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.BootFileParam(); !reflect.DeepEqual(got, tt.want) {
t.Errorf("BootFileParam = %v, want %v", got, tt.want)
}
if tt.want != nil {
var m MessageOptions
m.Add(OptBootFileParam(tt.want...))
got := m.ToBytes()
if diff := cmp.Diff(tt.buf, got); diff != "" {
t.Errorf("ToBytes mismatch (-want, +got): %s", diff)
}
}
})
}
}
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