Page Template still pulls in side bar.

Hi guys,
I am trying to create a new page template that doesn’t show anything except header and footer and the content, then I want to maybe add some custom HTML within the two.

I have put my “test.php” page template within my child theme and selected it when creating a new page but when I came to running the new page it still pulls in the left Side Bar (which I don’t want). This is the code and I believe it should work after reading and watching lots of tutorials ect. This is the code:

<?php
/*
Template Name: test
*/

?>

<?php get_header(); ?>

<?php the_content(); ?>

<?php get_footer(); ?>

Am I missing something? any help would be greatly received!

Thanks in advance!!