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package dhcpv4
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestOptClassIdentifierInterfaceMethods(t *testing.T) {
o := OptClassIdentifier{Identifier: "foo"}
require.Equal(t, OptionClassIdentifier, o.Code(), "Code")
require.Equal(t, 3, o.Length(), "Length")
require.Equal(t, []byte{byte(OptionClassIdentifier), 3, 'f', 'o', 'o'}, o.ToBytes(), "ToBytes")
}
func TestParseOptClassIdentifier(t *testing.T) {
data := []byte{byte(OptionClassIdentifier), 4, 't', 'e', 's', 't'} // DISCOVER
o, err := ParseOptClassIdentifier(data)
require.NoError(t, err)
require.Equal(t, &OptClassIdentifier{Identifier: "test"}, o)
// Short byte stream
data = []byte{byte(OptionClassIdentifier)}
_, err = ParseOptClassIdentifier(data)
require.Error(t, err, "should get error from short byte stream")
// Wrong code
data = []byte{54, 2, 1, 1}
_, err = ParseOptClassIdentifier(data)
require.Error(t, err, "should get error from wrong code")
// Bad length
data = []byte{byte(OptionClassIdentifier), 6, 1, 1, 1}
_, err = ParseOptClassIdentifier(data)
require.Error(t, err, "should get error from bad length")
}
func TestOptClassIdentifierString(t *testing.T) {
o := OptClassIdentifier{Identifier: "testy test"}
require.Equal(t, "Class Identifier -> testy test", o.String())
}
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