Update Composer, update everything

vendor/symfony/config/Tests/Resource/ComposerResourceTest.php

@@ -0,0 +1,47 @@
+<?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\Config\Tests\Resource;
+
+use Composer\Autoload\ClassLoader;
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\Config\Resource\ComposerResource;
+
+class ComposerResourceTest extends TestCase
+{
+    public function testGetVendor()
+    {
+        $res = new ComposerResource();
+
+        $r = new \ReflectionClass(ClassLoader::class);
+        $found = false;
+
+        foreach ($res->getVendors() as $vendor) {
+            if ($vendor && 0 === strpos($r->getFileName(), $vendor)) {
+                $found = true;
+                break;
+            }
+        }
+
+        $this->assertTrue($found);
+    }
+
+    public function testSerializeUnserialize()
+    {
+        $res = new ComposerResource();
+        $ser = unserialize(serialize($res));
+
+        $this->assertTrue($res->isFresh(0));
+        $this->assertTrue($ser->isFresh(0));
+
+        $this->assertEquals($res, $ser);
+    }
+}