Composer update

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

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

@@ -0,0 +1,56 @@
+<?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\FunctionContextPass;
+
+class FunctionContextPassTest extends CodeCleanerTestCase
+{
+    public function setUp()
+    {
+        $this->setPass(new FunctionContextPass());
+    }
+
+    /**
+     * @dataProvider validStatements
+     */
+    public function testProcessStatementPasses($code)
+    {
+        $this->parseAndTraverse($code);
+        $this->assertTrue(true);
+    }
+
+    public function validStatements()
+    {
+        return [
+            ['function foo() { yield; }'],
+            ['if (function(){ yield; })'],
+        ];
+    }
+
+    /**
+     * @dataProvider invalidYieldStatements
+     * @expectedException \Psy\Exception\FatalErrorException
+     */
+    public function testInvalidYield($code)
+    {
+        $this->parseAndTraverse($code);
+    }
+
+    public function invalidYieldStatements()
+    {
+        return [
+            ['yield'],
+            ['if (yield)'],
+        ];
+    }
+}