From fa1c2ab68c091f39185116788f3960fb5be5a6a0 Mon Sep 17 00:00:00 2001
From: Thomas Pelletier <pelletier.thomas@gmail.com>
Date: Tue, 1 Dec 2015 14:02:02 +0100
Subject: [PATCH] Error when parsing an empty key

---
 keysparsing.go      | 3 +++
 keysparsing_test.go | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/keysparsing.go b/keysparsing.go
index 7535379..4deed81 100644
--- a/keysparsing.go
+++ b/keysparsing.go
@@ -70,6 +70,9 @@ func parseKey(key string) ([]string, error) {
 	if buffer.Len() > 0 {
 		groups = append(groups, buffer.String())
 	}
+	if len(groups) == 0 {
+		return nil, fmt.Errorf("empty key")
+	}
 	return groups, nil
 }
 
diff --git a/keysparsing_test.go b/keysparsing_test.go
index 2d5379f..ef7e2a5 100644
--- a/keysparsing_test.go
+++ b/keysparsing_test.go
@@ -42,3 +42,8 @@ func TestDottedKeyBasic(t *testing.T) {
 func TestBaseKeyPound(t *testing.T) {
 	testError(t, "hello#world", "invalid bare character: #")
 }
+
+func TestEmptyKey(t *testing.T) {
+	testError(t, "", "empty key")
+	testError(t, " ", "empty key")
+}