From 1b1689bdeaa4f0af9af1444bbba446eccd4359a6 Mon Sep 17 00:00:00 2001
From: Alexandre Gaigalas <alexandre@gaigalas.net>
Date: Fri, 16 Jan 2015 02:34:15 -0200
Subject: [PATCH] AbstractRelated is accepts '' as valid by default

---
 library/Rules/AbstractRelated.php                  |  3 ++-
 tests/library/Respect/Validation/Rules/KeyTest.php | 10 ++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/library/Rules/AbstractRelated.php b/library/Rules/AbstractRelated.php
index 0eb776d3d..9f9472b91 100644
--- a/library/Rules/AbstractRelated.php
+++ b/library/Rules/AbstractRelated.php
@@ -66,10 +66,11 @@ public function check($input)
     public function validate($input)
     {
         $hasReference = $this->hasReference($input);
+
         if ($this->mandatory && !$hasReference) {
             return false;
         }
 
-        return $this->decision('validate', $hasReference, $input);
+        return $this->decision('validate', $hasReference, $input) || $this->getReferenceValue($input) === '';
     }
 }
diff --git a/tests/library/Respect/Validation/Rules/KeyTest.php b/tests/library/Respect/Validation/Rules/KeyTest.php
index 001b787ed..0d07b90e2 100644
--- a/tests/library/Respect/Validation/Rules/KeyTest.php
+++ b/tests/library/Respect/Validation/Rules/KeyTest.php
@@ -13,6 +13,16 @@ public function testArrayWithPresentKeyShouldReturnTrue()
         $this->assertTrue($validator->validate($obj));
     }
 
+    public function testArrayWithEmptyKeyShouldReturnTrue()
+    {
+        $validator = new Key('someEmptyKey');
+        $obj = array();
+        $obj['someEmptyKey'] = '';
+        $this->assertTrue($validator->assert($obj));
+        $this->assertTrue($validator->check($obj));
+        $this->assertTrue($validator->validate($obj));
+    }
+
     /**
      * @expectedException Respect\Validation\Exceptions\KeyException
      */