N°2651 rollback gitignore for lib tests dirs

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

lib/symfony/cache/Tests/Adapter/PhpArrayAdapterWithFallbackTest.php

@@ -0,0 +1,49 @@
+<?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\Cache\Tests\Adapter;
+
+use Symfony\Component\Cache\Adapter\FilesystemAdapter;
+use Symfony\Component\Cache\Adapter\PhpArrayAdapter;
+
+/**
+ * @group time-sensitive
+ */
+class PhpArrayAdapterWithFallbackTest extends AdapterTestCase
+{
+    protected $skippedTests = [
+        'testGetItemInvalidKeys' => 'PhpArrayAdapter does not throw exceptions on invalid key.',
+        'testGetItemsInvalidKeys' => 'PhpArrayAdapter does not throw exceptions on invalid key.',
+        'testHasItemInvalidKeys' => 'PhpArrayAdapter does not throw exceptions on invalid key.',
+        'testDeleteItemInvalidKeys' => 'PhpArrayAdapter does not throw exceptions on invalid key.',
+        'testDeleteItemsInvalidKeys' => 'PhpArrayAdapter does not throw exceptions on invalid key.',
+        'testPrune' => 'PhpArrayAdapter just proxies',
+    ];
+
+    protected static $file;
+
+    public static function setUpBeforeClass()
+    {
+        self::$file = sys_get_temp_dir().'/symfony-cache/php-array-adapter-test.php';
+    }
+
+    protected function tearDown()
+    {
+        if (file_exists(sys_get_temp_dir().'/symfony-cache')) {
+            FilesystemAdapterTest::rmdir(sys_get_temp_dir().'/symfony-cache');
+        }
+    }
+
+    public function createCachePool($defaultLifetime = 0)
+    {
+        return new PhpArrayAdapter(self::$file, new FilesystemAdapter('php-array-fallback', $defaultLifetime));
+    }
+}