CustomTestPost

add_action( 'init', 'create_post_type' );

function create_post_type ( )
{
  register_post_type( 'CustomTestPost',
   array
   (
      'labels' => array
      (
        'name' => 'Custom Test Post',
        'singular_name' => 'Custom Test Post'
      ),
      'public' => true
    )
  );
}