Problem width wp_customize

Hi I have used a theme customizer in my function file but when I try to insert the results in the template it doesn’t shows.
There is something wrong in the code ?

// Home Customizer
add_action('customize_register', 'marine_home_customizer' );

function marine_home_customizer($wp_customize) {
	$wp_customize->add_section('themename_color_scheme', array(
        'title'    => __('Home', 'marine'),
        'description' => '',
        'priority' => 120,
    ));

    //  =============================
    //  = Title               =
    //  =============================
    $wp_customize->add_setting('themename_theme_options[text_test]', array(
        'default'        => 'Titolo 2',
        'capability'     => 'edit_theme_options',
        'type'           => 'theme_mod',

    ));

    $wp_customize->add_control('themename_text_test', array(
        'label'      => __('Titolo', 'marine'),
        'section'    => 'themename_color_scheme',
        'settings'   => 'themename_theme_options[text_test]',
    ));
}

Template file

<?php echo get_theme_mod('text_test'); ?>