N°2651 rollback gitignore for lib tests dirs

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

lib/symfony/web-profiler-bundle/Tests/Resources/IconTest.php

@@ -0,0 +1,30 @@
+<?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\WebProfilerBundle\Tests\Resources;
+
+use PHPUnit\Framework\TestCase;
+
+class IconTest extends TestCase
+{
+    /**
+     * @dataProvider provideIconFilePaths
+     */
+    public function testIconFileContents($iconFilePath)
+    {
+        $this->assertRegExp('~<svg xmlns="http://www.w3.org/2000/svg" width="\d+" height="\d+" viewBox="0 0 \d+ \d+">.*</svg>~s', file_get_contents($iconFilePath), sprintf('The SVG metadata of the %s icon is different than expected (use the same as the other icons).', $iconFilePath));
+    }
+
+    public function provideIconFilePaths()
+    {
+        return array_map(function ($filePath) { return (array) $filePath; }, glob(__DIR__.'/../../Resources/views/Icon/*.svg'));
+    }
+}