Index: tests/phpunit/tests/db.php
===================================================================
--- tests/phpunit/tests/db.php	(revision 29696)
+++ tests/phpunit/tests/db.php	(working copy)
@@ -444,7 +444,7 @@
 	 */
 	function test_empty_where_on_update() {
 		global $wpdb;
-		$show = $wpdb->show_errors(false);
+		$suppress = $wpdb->suppress_errors( true );
 		$wpdb->update( $wpdb->posts, array( 'post_name' => 'burrito' ), array() );
 
 		$expected1 = "UPDATE `{$wpdb->posts}` SET `post_name` = 'burrito' WHERE ";
@@ -456,6 +456,6 @@
 		$expected2 = "UPDATE `{$wpdb->posts}` SET `post_name` = 'burrito' WHERE `post_status` = 'taco'";
 		$this->assertEmpty( $wpdb->last_error );
 		$this->assertEquals( $expected2, $wpdb->last_query );
-		$wpdb->show_errors( $show );
+		$wpdb->suppress_errors( $suppress );
 	}
 }