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package dhcpv4
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestParseOptionGeneric(t *testing.T) {
// Empty bytestream produces error
_, err := ParseOptionGeneric([]byte{})
require.Error(t, err, "error from empty bytestream")
}
func TestOptionGenericCode(t *testing.T) {
o := OptionGeneric{
OptionCode: OptionDHCPMessageType,
Data: []byte{byte(MessageTypeDiscover)},
}
require.Equal(t, OptionDHCPMessageType, o.Code())
}
func TestOptionGenericData(t *testing.T) {
o := OptionGeneric{
OptionCode: OptionNameServer,
Data: []byte{192, 168, 0, 1},
}
require.Equal(t, []byte{192, 168, 0, 1}, o.Data)
}
func TestOptionGenericToBytes(t *testing.T) {
o := OptionGeneric{
OptionCode: OptionDHCPMessageType,
Data: []byte{byte(MessageTypeDiscover)},
}
serialized := o.ToBytes()
expected := []byte{53, 1, 1}
require.Equal(t, expected, serialized)
}
func TestOptionGenericToBytesZeroOptions(t *testing.T) {
o := OptionGeneric{OptionCode: OptionEnd}
serialized := o.ToBytes()
expected := []byte{255}
require.Equal(t, expected, serialized)
o = OptionGeneric{OptionCode: OptionPad}
serialized = o.ToBytes()
expected = []byte{0}
require.Equal(t, expected, serialized)
}
func TestOptionGenericString(t *testing.T) {
o := OptionGeneric{
OptionCode: OptionDHCPMessageType,
Data: []byte{byte(MessageTypeDiscover)},
}
require.Equal(t, "DHCP Message Type -> [1]", o.String())
}
func TestOptionGenericStringUnknown(t *testing.T) {
o := OptionGeneric{
OptionCode: 102, // Returend option code.
Data: []byte{byte(MessageTypeDiscover)},
}
require.Equal(t, "Unknown -> [1]", o.String())
}
func TestOptionGenericLength(t *testing.T) {
filename := "/path/to/file"
o := OptionGeneric{
OptionCode: OptionBootfileName,
Data: []byte(filename),
}
require.Equal(t, len(filename), o.Length())
}
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