How I can add placeholder in shortcode

function show_the_views_func( $atts ){
    $atts = shortcode_atts(
        array(
            'placeholder' => '',
        ), $atts 
    );

    $count = get_post_meta( get_the_ID(), 'views', true );

    return $count . $atts['placeholder'] . ' views';
}
add_shortcode( 'show-the-views', 'show_the_views_func' );
echo do_shortcode( '[show-the-views placeholder="test"]' );