Added a session id.

tests/step_defs/page.py

@@ -3,6 +3,7 @@
 from urllib import request
 from urllib.error import HTTPError
 
+
 class Page:
     """Class for getting an individual page."""
 
@@ -13,10 +14,17 @@ class Page:
     def request_url(self, url):
         """Make a page request."""
         try:
-            self.res = request.urlopen(url)
+            page = request.urlopen(url)
         except HTTPError as err:
             self.res = err
+        else:
+            with page:
+                self.res = page
 
     def get_status_code(self):
         """Return the status code."""
         return self.res.status
+
+    def get_header(self, header):
+        """Did a session id get set."""
+        return self.res.headers[header]