Add fieldset class needed by Zend\Form\FormTest::testPreserveEntities…

…BoundToCollectionAfterValidation

tests/ZendTest/Form/TestAsset/ProductCategoriesFieldset.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace ZendTest\Form\TestAsset;
+
+class ProductCategoriesFieldset extends ProductFieldset
+{
+    public function __construct() {
+        parent::__construct();
+
+        $template = new CategoryFieldset();
+
+        $this->add(array(
+            'name' => 'categories',
+            'type' => 'collection',
+            'options' => array(
+                'label' => 'Categories',
+                'should_create_template' => true,
+                'allow_add' => true,
+                'count' => 0,
+                'target_element' => $template,
+            ),
+        ));
+    }
+}