Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/symfony/process/Tests/PhpProcessTest.php

@@ -0,0 +1,49 @@
+<?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\Process\Tests;
+
+use Symfony\Component\Process\PhpExecutableFinder;
+use Symfony\Component\Process\PhpProcess;
+
+class PhpProcessTest extends \PHPUnit_Framework_TestCase
+{
+    public function testNonBlockingWorks()
+    {
+        $expected = 'hello world!';
+        $process = new PhpProcess(<<<PHP
+<?php echo '$expected';
+PHP
+        );
+        $process->start();
+        $process->wait();
+        $this->assertEquals($expected, $process->getOutput());
+    }
+
+    public function testCommandLine()
+    {
+        $process = new PhpProcess(<<<PHP
+<?php echo 'foobar';
+PHP
+        );
+
+        $f = new PhpExecutableFinder();
+        $commandLine = $f->find();
+
+        $this->assertSame($commandLine, $process->getCommandLine(), '::getCommandLine() returns the command line of PHP before start');
+
+        $process->start();
+        $this->assertSame($commandLine, $process->getCommandLine(), '::getCommandLine() returns the command line of PHP after start');
+
+        $process->wait();
+        $this->assertSame($commandLine, $process->getCommandLine(), '::getCommandLine() returns the command line of PHP after wait');
+    }
+}