BLUEBUTTON-608 Robust userinfo logic in testclient (#702)

* Robust userinfo logic in testclient

- prevents errors when patient doesn't have records.

apps/testclient/views.py

@@ -42,10 +42,15 @@ def callback(request):
             response['token_response'][k] = v
         else:
             response['token_response'][k] = ' '.join(v)
+    userinfo_uri = request.session['userinfo_uri']
+    try:
+        userinfo = oas.get(userinfo_uri).json()
+    except Exception:
+        userinfo = {'patient': token.get('patient', None)}
+
+    request.session['patient'] = userinfo.get('patient', None)
 
-    userinfo = oas.get(request.session['userinfo_uri']).json()
     response['userinfo'] = userinfo
-    request.session['patient'] = userinfo['patient']
 
     response['oidc_discovery_uri'] = host + \
         reverse('openid-configuration')