Added unit test

tests/Doctrine/Tests/ORM/Functional/Ticket/DDC2692Test.php

@@ -0,0 +1,65 @@
+<?php
+
+namespace Doctrine\Tests\ORM\Functional\Ticket;
+
+use Doctrine\Common\EventSubscriber;
+use Doctrine\ORM\Event\PreFlushEventArgs;
+use Doctrine\ORM\Query\ResultSetMappingBuilder;
+use Doctrine\Common\Collections\ArrayCollection;
+
+/**
+ * @group
+ */
+class DDC2692Test extends \Doctrine\Tests\OrmFunctionalTestCase
+{
+    /**
+     * {@inheritDoc}
+     */
+    protected function setup()
+    {
+        parent::setup();
+
+        try {
+            $this->_schemaTool->createSchema(array(
+                $this->_em->getClassMetadata(__NAMESPACE__ . '\DDC2692Foo'),
+            ));
+        } catch(\Exception $e) {
+            return;
+        }
+        $this->_em->clear();
+    }
+
+    public function testListenerCalledOneOnPreFlush()
+    {
+        $listener = $this->getMock('Doctrine\Tests\ORM\Functional\Ticket\Listener', array('preFlush'));
+        $listener->expects($this->once())->method('preFlush');
+
+        $this->_em->getEventManager()->addEventSubscriber($listener);
+
+        $this->_em->persist(new DDC2692Foo);
+        $this->_em->persist(new DDC2692Foo);
+
+        $this->_em->flush();
+        $this->_em->clear();
+    }
+}
+/**
+ * @Entity @Table(name="ddc_2692_foo")
+ */
+class DDC2692Foo
+{
+    /** @Id @Column(type="integer") @GeneratedValue */
+    public $id;
+}
+
+class Listener implements EventSubscriber {
+
+    public function getSubscribedEvents() {
+        return array(\Doctrine\ORM\Events::preFlush);
+    }
+
+    public function preFlush(PreFlushEventArgs $args) {
+    }
+}
+
+