Add data-testid to test relevant elements (fixes #244)

Change-Id: Id908e38f01e426543ed98975544204a9a632294d
diff --git a/t/page.t b/t/page.t
index 5fb2129..123a720 100644
--- a/t/page.t
+++ b/t/page.t
@@ -35,6 +35,8 @@
   ->header_is('X-Content-Type-Options', 'nosniff')
   ->header_is('Access-Control-Allow-Methods','GET, POST, OPTIONS')
   ->header_is('X-XSS-Protection', '1; mode=block')
+  ->element_exists('*[data-testid=home]')
+  ->element_exists('*[data-testid=tour-start]')
   ;
 
 # Test additions