Return null on key not found

Author: Jacob Christiansen

lib/Store/Redis.php

@@ -37,6 +37,10 @@ public function get($type, $key)
         $redisKey = "{$this->prefix}.$type.$key";
         $value = $this->redis->get($redisKey);
 
+        if (is_null($value)) {
+            return null;
+        }
+
         return unserialize($value);
     }
 

test/Store/RedisTest.php

@@ -126,7 +126,7 @@ public function testGetNonExistingKey()
             $res = $store->get('test', 'nokey');
 
             $this->assertEquals('simpleSAMLphp.test.nokey', Predis\Client::$getKey);
-            $this->assertFalse($res);
+            $this->assertNull($res);
         }
 
         public function testDeleteKey()