N°2651 rollback gitignore for lib tests dirs

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

lib/symfony/http-kernel/Tests/DataCollector/DataCollectorTest.php

@@ -0,0 +1,38 @@
+<?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\Component\HttpKernel\Tests\DataCollector;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpKernel\Tests\Fixtures\DataCollector\CloneVarDataCollector;
+use Symfony\Component\VarDumper\Cloner\VarCloner;
+
+class DataCollectorTest extends TestCase
+{
+    public function testCloneVarStringWithScheme()
+    {
+        $c = new CloneVarDataCollector('scheme://foo');
+        $c->collect(new Request(), new Response());
+        $cloner = new VarCloner();
+
+        $this->assertEquals($cloner->cloneVar('scheme://foo'), $c->getData());
+    }
+
+    public function testCloneVarExistingFilePath()
+    {
+        $c = new CloneVarDataCollector([$filePath = tempnam(sys_get_temp_dir(), 'clone_var_data_collector_')]);
+        $c->collect(new Request(), new Response());
+
+        $this->assertSame($filePath, $c->getData()[0]);
+    }
+}