Update AggregateIdentifier.php

Miliooo · Oct 26, 2015 · 2676aa7 · 2676aa7
1 parent 41444ff
commit 2676aa7
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/Identifier/AggregateIdentifier.php b/src/Identifier/AggregateIdentifier.php
@@ -19,6 +19,10 @@ abstract class AggregateIdentifier
      */
     final public function __construct($identifier)
     {
+        if (!is_string($identifier)) {
+            throw new \InvalidArgumentException('expected string');
+        }
+
         $this->identifier = $identifier;
     }