DomainSearchList: tests for FromBytes, ToBytes, and Getter

Signed-off-by: Chris Koch <chrisko@google.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/rfc1035label/label.go b/rfc1035label/label.go
index 042c17b..f727ec6 100644
--- a/rfc1035label/label.go
+++ b/rfc1035label/label.go
@@ -89,6 +89,10 @@ func FromBytes(data []byte) (*Labels, error) {
 	return &l, nil
 }
 
+// ErrBufferTooShort is returned when the label cannot be parsed due to a wrong
+// length or missing bytes.
+var ErrBufferTooShort = errors.New("rfc1035label: buffer too short")
+
 // fromBytes decodes a serialized stream and returns a list of labels
 func labelsFromBytes(buf []byte) ([]string, error) {
 	var (
@@ -132,7 +136,7 @@ func labelsFromBytes(buf []byte) ([]string, error) {
 			pos = off
 		} else {
 			if pos+length > len(buf) {
-				return nil, errors.New("rfc1035label: buffer too short")
+				return nil, ErrBufferTooShort
 			}
 			chunk = string(buf[pos : pos+length])
 			if label != "" {