Add tests

bookwyrm/templates/annual_summary/layout.html

@@ -59,6 +59,7 @@
         </div>
     </div>
 
+    {% if book_pages_lowest and book_pages_highest %}
     <div class="columns is-mobile is-align-items-center mt-5">
         <div class="column is-2 is-offset-1">
             <a href="{{ book_pages_lowest.local_path }}">{% include 'snippets/book_cover.html' with book=book_pages_lowest cover_class='is-w-auto-tablet is-h-l-mobile' %}</a>
@@ -103,6 +104,7 @@
             </p>
         </div>
     </div>
+    {% endif %}
 
     <div class="columns">
         <div class="column is-one-fifth is-offset-two-fifths">