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package dhcpv4
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestOptUserClassToBytes(t *testing.T) {
opt := OptUserClass{
UserClasses: [][]byte{[]byte("linuxboot")},
}
data := opt.ToBytes()
expected := []byte{
77, // OPTION_USER_CLASS
10, // length
9, 'l', 'i', 'n', 'u', 'x', 'b', 'o', 'o', 't',
}
require.Equal(t, expected, data)
}
func TestParseOptUserClassMultiple(t *testing.T) {
expected := []byte{
77, 15,
9, 'l', 'i', 'n', 'u', 'x', 'b', 'o', 'o', 't',
4, 't', 'e', 's', 't',
}
opt, err := ParseOptUserClass(expected)
require.NoError(t, err)
require.Equal(t, len(opt.UserClasses), 2)
require.Equal(t, []byte("linuxboot"), opt.UserClasses[0])
require.Equal(t, []byte("test"), opt.UserClasses[1])
}
func TestParseOptUserClassNone(t *testing.T) {
expected := []byte{}
_, err := ParseOptUserClass(expected)
require.Error(t, err)
}
func TestParseOptUserClass(t *testing.T) {
expected := []byte{
77, 10, 9, 'l', 'i', 'n', 'u', 'x', 'b', 'o', 'o', 't',
}
opt, err := ParseOptUserClass(expected)
require.NoError(t, err)
require.Equal(t, 1, len(opt.UserClasses))
require.Equal(t, []byte("linuxboot"), opt.UserClasses[0])
}
func TestOptUserClassToBytesMultiple(t *testing.T) {
opt := OptUserClass{
UserClasses: [][]byte{
[]byte("linuxboot"),
[]byte("test"),
},
}
data := opt.ToBytes()
expected := []byte{
77, // OPTION_USER_CLASS
15, // length
9, 'l', 'i', 'n', 'u', 'x', 'b', 'o', 'o', 't',
4, 't', 'e', 's', 't',
}
require.Equal(t, expected, data)
}
func TestParseOptUserClassLongerThanLength(t *testing.T) {
expected := []byte{
77, 10, 9, 'l', 'i', 'n', 'u', 'x', 'b', 'o', 'o', 't', 'X',
}
opt, err := ParseOptUserClass(expected)
require.NoError(t, err)
require.Equal(t, 1, len(opt.UserClasses))
require.Equal(t, []byte("linuxboot"), opt.UserClasses[0])
}
func TestParseOptUserClassShorterThanLength(t *testing.T) {
expected := []byte{
77, 10, 10, 'l', 'i', 'n', 'u', 'x', 'b', 'o', 'o', 't',
}
_, err := ParseOptUserClass(expected)
require.Error(t, err)
}
func TestParseOptUserClassShorterTotalLength(t *testing.T) {
expected := []byte{
77, 11, 10, 'l', 'i', 'n', 'u', 'x', 'b', 'o', 'o', 't',
}
_, err := ParseOptUserClass(expected)
require.Error(t, err)
}
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