N°2651 rollback gitignore for lib tests dirs

Too dangerous ! We'll work properly on this but for 2.8

lib/symfony/framework-bundle/Tests/Functional/SerializerTest.php

@@ -0,0 +1,52 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bundle\FrameworkBundle\Tests\Functional;
+
+/**
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+class SerializerTest extends AbstractWebTestCase
+{
+    public function testDeserializeArrayOfObject()
+    {
+        static::bootKernel(['test_case' => 'Serializer']);
+        $container = static::$kernel->getContainer();
+
+        $result = $container->get('serializer')->deserialize('{"bars": [{"id": 1}, {"id": 2}]}', Foo::class, 'json');
+
+        $bar1 = new Bar();
+        $bar1->id = 1;
+        $bar2 = new Bar();
+        $bar2->id = 2;
+
+        $expected = new Foo();
+        $expected->bars = [$bar1, $bar2];
+
+        $this->assertEquals($expected, $result);
+    }
+}
+
+class Foo
+{
+    /**
+     * @var Bar[]
+     */
+    public $bars;
+}
+
+class Bar
+{
+    /**
+     * @var int
+     */
+    public $id;
+}