--- /dev/null
+<?php
+/*
+ * This file is part of PHPUnit.
+ *
+ * (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.
+ */
+
+/**
+ * Extension to PHPUnit_Framework_AssertionFailedError to mark the special
+ * case of a test that printed output.
+ *
+ * @since Class available since Release 3.6.0
+ */
+class PHPUnit_Framework_OutputError extends PHPUnit_Framework_AssertionFailedError
+{
+}