Index: tests/phpunit/tests/customize/widgets.php
===================================================================
--- tests/phpunit/tests/customize/widgets.php	(revision 31370)
+++ tests/phpunit/tests/customize/widgets.php	(working copy)
@@ -38,6 +38,7 @@
 		parent::tearDown();
 		$this->manager = null;
 		unset( $GLOBALS['wp_customize'] );
+		unset( $GLOBALS['wp_scripts'] );
 	}
 
 	function set_customized_post_data( $customized ) {