Test WordPress Shortcode

<?php
function test_shortcode_shortcode( $atts, $content = null ) {
    extract( shortcode_atts( array(
        'test' => '1',
    ), $atts ) );
    return sprintf( '<a href="#%1$s" class="button">%1$s</a>', $test );
}
add_shortcode( 'test_shortcode', 'test_shortcode_shortcode' );