Index: tests/phpunit/includes/testcase.php
===================================================================
--- tests/phpunit/includes/testcase.php	(revision 29266)
+++ tests/phpunit/includes/testcase.php	(working copy)
@@ -11,7 +11,12 @@
 	protected $expected_doing_it_wrong = array();
 	protected $caught_doing_it_wrong = array();
 
-	protected static $hooks_saved = array();
+	protected static $hooks_saved = array(
+		'merged_filters' => array(),
+		'wp_actions' => array(),
+		'wp_current_filter' => array(),
+		'wp_filter' => array(),
+    );
 	protected static $ignore_files;
 
 	/**