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zombie.js-troubleshoot(7) -- Troubleshooting guide

The Dump

Get the browser to dump its current state. You'll be able to see the current document URL, history, cookies, local/session storage, and portion of the current page:

browser.dump()

URL: http://localhost:3003/here/#there

History:
  1. http://localhost:3003/here
  2: http://localhost:3003/here/#there

Cookies:
  session=e62ab205; domain=localhost; path=/here

Storage:
  localhost:3003 session:
    day = Monday

Document:
  <html>
    <head>
      <script src="/jquery.js"></script>
      <script src="/sammy.js"></script>
      <script src="/app.js"></script>
  </head>
    <body>
    ...

The actual report will have much more information.

Debugging

When running in debug mode, Zombie.js will spit out messages to the console. These could help you see what's going on as your tests execute, especially useful around stuff that happens in the background, like XHR requests.

To turn debugging on/off set browser.debug to true/false. You can also set this option when creating a new Browser object (the constructor takes an options argument), or for the duration of a single call to visit (the second argument being the options).

For example:

zombie.visit("http://thedead", { debug: true}, function(err, browser) {
  if (err)
    throw(err.message);
  ... 
});

If you're working on the code and you want to add more debug statements, call browser.log with any sequence of arguments (same as console.log), or with a function. In the later case, it will call the function only when debugging is turned on, and spit the value returned from the console.

For example:

browser.log("Currently visiting", browser.location);
browser.log(function() {
  return "Currently visiting " + browser.location;
});

Request/response

Each window keeps a trail of every resource request it makes (to load the page itself, scripts, XHR requests, etc). You can inspect these by obtaining the window.resources array and looking into it.

For example:

window.resources.dump()

The browser object provides the convenient methods lastRequest, lastResponse and lastError that return, respectively, the request, response and error associated with the last resources loaded by the current window.