I cannot get this to show only 5 post. It shows all the post listed in the category?

<div class="widgets" id="rd">
<h3>Test</h3>

<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>

<?php $my_query = new WP_Query('category_name=test-test&posts_per_page=5'); ?>
<ul>
<li><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></li>
</ul>

<?php wp_reset_query(); ?>

<?php endwhile; else: ?>
<p><?php _e('Sorry, no posts matched your criteria.'); ?></p>
<?php endif; ?>


</div>