Ticket #19126: admin-menu-test.php

<?php

add_action( 'admin_bar_menu', 'test_admin_bar_menu', 500 );

function test_admin_bar_menu( &$wp_admin_bar ) {
        $url = admin_url( '/' );

        $menu = array( 'id' => 'test', 'title' => "Test", 'href' => $url );

        $wp_admin_bar->add_menu( $menu );
}