Adding Info to Post ONLY if it has meta_value?

I’m trying to get information to appear for posts that only have a meta_value of ‘test’ within the WordPress database. I tried the code below but nothing happens.

<?php get_user_meta($user_id, $key, $single);  ?>
 <?php if ( $the_query = new WP_Query( array( 'meta_value' => 'Test' ) );) : ?>
 <p>trest</p>
   <?php endif; ?>

I searched Google but wasn’t able to find something that worked ?? thanks!