Move test to the right place and add assertions

That test was removed from "performance" group but we forgot to move it
to the correct namespace.

It was also not doing any assertion, which is quite bad.

More info:
- https://github.com/doctrine/doctrine2/issues/3333

tests/Doctrine/Tests/ORM/Functional/Ticket/DDC2602Test.php

@@ -1,62 +1,61 @@
 <?php
 
-namespace Doctrine\Tests\ORM\Performance;
+namespace Doctrine\Tests\ORM\Functional\Ticket;
 
 use Doctrine\Common\Collections\ArrayCollection;
 use Doctrine\ORM\Event\LifecycleEventArgs;
 use Doctrine\ORM\Events;
-use Doctrine\Tests\OrmPerformanceTestCase;
+use Doctrine\Tests\OrmFunctionalTestCase;
 
 /**
  * @group DDC-2602
  */
-class DDC2602Test extends OrmPerformanceTestCase
+class DDC2602Test extends OrmFunctionalTestCase
 {
-    protected function setUp()
+    protected function setUp() : void
     {
         parent::setUp();
 
         $this->_schemaTool->createSchema(
             [
-            $this->_em->getClassMetadata(DDC2602User::class),
-            $this->_em->getClassMetadata(DDC2602Biography::class),
-            $this->_em->getClassMetadata(DDC2602BiographyField::class),
-            $this->_em->getClassMetadata(DDC2602BiographyFieldChoice::class),
+                $this->_em->getClassMetadata(DDC2602User::class),
+                $this->_em->getClassMetadata(DDC2602Biography::class),
+                $this->_em->getClassMetadata(DDC2602BiographyField::class),
+                $this->_em->getClassMetadata(DDC2602BiographyFieldChoice::class),
             ]
         );
 
         $this->loadFixture();
     }
 
-    protected function tearDown()
+    protected function tearDown() : void
     {
         parent::tearDown();
 
         $this->_schemaTool->dropSchema(
             [
-            $this->_em->getClassMetadata(DDC2602User::class),
-            $this->_em->getClassMetadata(DDC2602Biography::class),
-            $this->_em->getClassMetadata(DDC2602BiographyField::class),
-            $this->_em->getClassMetadata(DDC2602BiographyFieldChoice::class),
+                $this->_em->getClassMetadata(DDC2602User::class),
+                $this->_em->getClassMetadata(DDC2602Biography::class),
+                $this->_em->getClassMetadata(DDC2602BiographyField::class),
+                $this->_em->getClassMetadata(DDC2602BiographyFieldChoice::class),
             ]
         );
     }
 
-    public function testIssue()
+    public function testPostLoadListenerShouldBeAbleToRunQueries() : void
     {
         $eventManager = $this->_em->getEventManager();
         $eventManager->addEventListener([Events::postLoad], new DDC2602PostLoadListener());
 
-        // Set maximum seconds this can run
-        $this->setMaxRunningTime(1);
+        $result = $this->_em->createQuery('SELECT u, b FROM Doctrine\Tests\ORM\Functional\Ticket\DDC2602User u JOIN u.biography b')
+                             ->getResult();
 
-        $this
-            ->_em
-            ->createQuery('SELECT u, b FROM Doctrine\Tests\ORM\Performance\DDC2602User u JOIN u.biography b')
-            ->getResult();
+        self::assertCount(2, $result);
+        self::assertCount(2, $result[0]->biography->fieldList);
+        self::assertCount(1, $result[1]->biography->fieldList);
     }
 
-    private function loadFixture()
+    private function loadFixture() : void
     {
         $user1                 = new DDC2602User();
         $user2                 = new DDC2602User();
@@ -127,7 +126,7 @@ class DDC2602Test extends OrmPerformanceTestCase
 
 class DDC2602PostLoadListener
 {
-    public function postLoad(LifecycleEventArgs $event)
+    public function postLoad(LifecycleEventArgs $event) : void
     {
         $entity = $event->getEntity();
 
@@ -138,7 +137,7 @@ class DDC2602PostLoadListener
         $entityManager = $event->getEntityManager();
         $query         = $entityManager->createQuery('
             SELECT f, fc
-              FROM Doctrine\Tests\ORM\Performance\DDC2602BiographyField f INDEX BY f.id
+              FROM Doctrine\Tests\ORM\Functional\Ticket\DDC2602BiographyField f INDEX BY f.id
               JOIN f.choiceList fc INDEX BY fc.id
         ');