Composer update

* updated Laravel to v5.6.38
* Added laravel tinker in dev dependencies

vendor/psy/psysh/test/CodeCleaner/MagicConstantsPassTest.php

@@ -0,0 +1,39 @@
+<?php
+
+/*
+ * This file is part of Psy Shell.
+ *
+ * (c) 2012-2018 Justin Hileman
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Psy\Test\CodeCleaner;
+
+use Psy\CodeCleaner\MagicConstantsPass;
+
+class MagicConstantsPassTest extends CodeCleanerTestCase
+{
+    public function setUp()
+    {
+        $this->setPass(new MagicConstantsPass());
+    }
+
+    /**
+     * @dataProvider magicConstants
+     */
+    public function testProcess($from, $to)
+    {
+        $this->assertProcessesAs($from, $to);
+    }
+
+    public function magicConstants()
+    {
+        return [
+            ['__DIR__;', 'getcwd();'],
+            ['__FILE__;', "'';"],
+            ['___FILE___;', '___FILE___;'],
+        ];
+    }
+}