Add Composer autoloading functions and PHPStan for testing

vendor/symfony/console/Tester/ApplicationTester.php

@@ -0,0 +1,77 @@
+<?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\Console\Tester;
+
+use Symfony\Component\Console\Application;
+use Symfony\Component\Console\Input\ArrayInput;
+
+/**
+ * Eases the testing of console applications.
+ *
+ * When testing an application, don't forget to disable the auto exit flag:
+ *
+ *     $application = new Application();
+ *     $application->setAutoExit(false);
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class ApplicationTester
+{
+    use TesterTrait;
+
+    private $application;
+    private $input;
+    private $statusCode;
+
+    public function __construct(Application $application)
+    {
+        $this->application = $application;
+    }
+
+    /**
+     * Executes the application.
+     *
+     * Available options:
+     *
+     *  * interactive:               Sets the input interactive flag
+     *  * decorated:                 Sets the output decorated flag
+     *  * verbosity:                 Sets the output verbosity flag
+     *  * capture_stderr_separately: Make output of stdOut and stdErr separately available
+     *
+     * @param array $input   An array of arguments and options
+     * @param array $options An array of options
+     *
+     * @return int The command exit code
+     */
+    public function run(array $input, $options = [])
+    {
+        $this->input = new ArrayInput($input);
+        if (isset($options['interactive'])) {
+            $this->input->setInteractive($options['interactive']);
+        }
+
+        $shellInteractive = getenv('SHELL_INTERACTIVE');
+
+        if ($this->inputs) {
+            $this->input->setStream(self::createStream($this->inputs));
+            putenv('SHELL_INTERACTIVE=1');
+        }
+
+        $this->initOutput($options);
+
+        $this->statusCode = $this->application->run($this->input, $this->output);
+
+        putenv($shellInteractive ? "SHELL_INTERACTIVE=$shellInteractive" : 'SHELL_INTERACTIVE');
+
+        return $this->statusCode;
+    }
+}