Simulating cookie responses

Although Mirage allows setting headers in a response, the XMLHttpRequest spec explicitly forbids access to Set-Cookie and Set-Cookie2 headers. As a result Mirage responses cannot set cookies via headers.

However, you can simulate receiving cookies from an ajax call at the browser level by setting them in a route function handler:'/users/login', ({ users }) => {
  // log in for 24 hours
  let now = new Date();
  let cookieExpiration = new Date(now.getTime() + (24 * 3600 * 1000));
  document.cookie=`remember_me=cookie-content-here;; path=/; expires=${cookieExpiration.toUTCString()};`;

  return users.find(1);

Your Ember client code will now have access to any cookies set using document.cookie.