Add test case for #156

test-server/server.js

 
 })
 
-app.all('/err-body', (res, res) => {
+app.all('/cookie', (req, res) => {
+  res.cookie('cookieName',Math.random(), { maxAge: 900000, httpOnly: true });
+  res.end()
+})
+
+app.all('/err-body', (req, res) => {
   res.status(400)
   res.write({ data : Date.now() })
   res.end()