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

vendor/phpunit/phpunit-mock-objects/src/Framework/MockObject/Verifiable.php

@@ -0,0 +1,25 @@
+<?php
+/*
+ * This file is part of the PHPUnit_MockObject package.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Interface for classes which must verify a given expectation.
+ *
+ * @since Interface available since Release 1.0.0
+ */
+interface PHPUnit_Framework_MockObject_Verifiable
+{
+    /**
+     * Verifies that the current expectation is valid. If everything is OK the
+     * code should just return, if not it must throw an exception.
+     *
+     * @throws PHPUnit_Framework_ExpectationFailedException
+     */
+    public function verify();
+}