Zombiejs empty HTML

Question

I'm deploying a Zombiejs application to Openshift, but Zombie seems to be unable to fetch the HTML.

I have an object (called Poker) that maintains the headless browser and does things with it. One of the methods, called init, logs in to a website and returns the "initialized" browser.

Poker.prototype.init = function (email, password, ip) {
  var self = this;
  var browser;

  // Have to use the ip that Openshift provides
  // See SO question http://goo.gl/n2TfMC
  if (ip) {
    browser = Zombie.create({
      'localAddress': ip
    });
  } else {
    browser = Zombie.create();
  }

  return new Promise(function (resolve, reject) {
    browser
      .visit('http://some.login/page')
      .then(function () {
        // Some debugging stuff :p
        console.log('body: ');
        console.log(browser.html('body'));

        // Fill in the credentials
        browser.fill('email', email);
        browser.fill('password', password);
        return browser.pressButton('Log In');
      })
      .done(function() {
        // Logged in, new page loaded
        // Check if login was successful
        var title = browser.text('title');
        console.log(title);
      });
  });
}

The console remains empty after printing body:, anden Zombie attempts to fill in the email address, I receive this error:

Possibly unhandled TypeError: Cannot use 'in' operator to search for 'compareDocumentPosition' in null
    at /var/lib/openshift/[app-id]/app-root/runtime/repo/node_modules/zombie/node_modules/jsdom/node_modules/nwmatcher/src/nwmatcher-noqsa.js:267:43
    at module.exports (/var/lib/openshift/[app-id]/app-root/runtime/repo/node_modules/zombie/node_modules/jsdom/node_modules/nwmatcher/src/nwmatcher-noqsa.js:37:7)
    at addNwmatcher (/var/lib/openshift/[app-id]/app-root/runtime/repo/node_modules/zombie/node_modules/jsdom/lib/jsdom/selectors/index.js:6:27)
    at HTMLDocument.<anonymous> (/var/lib/openshift/[app-id]/app-root/runtime/repo/node_modules/zombie/node_modules/jsdom/lib/jsdom/selectors/index.js:18:29)
    at HTMLDocument.querySelectorAll (/var/lib/openshift/[app-id]/app-root/runtime/repo/node_modules/zombie/node_modules/jsdom/lib/jsdom/level1/core.js:63:53)
    at Browser.queryAll (/var/lib/openshift/[app-id]/app-root/runtime/repo/node_modules/zombie/lib/zombie/browser.js:348:26)
    at Browser.field (/var/lib/openshift/[app-id]/app-root/runtime/repo/node_modules/zombie/lib/zombie/browser.js:591:17)
    at Browser._findOption (/var/lib/openshift/[app-id]/app-root/runtime/repo/node_modules/zombie/lib/zombie/browser.js:662:18)
    at Browser.select (/var/lib/openshift/[app-id]/app-root/runtime/repo/node_modules/zombie/lib/zombie/browser.js:692:19)
    at /var/lib/openshift/[app-id]/app-root/runtime/repo/poker.js:61:17

After I saw this, I tried to visit a different page (Google) through Zombie, but it returned empty HTML as well.

I took a look at some other StackOverflow questions about the compareDocumentPosition error, but I think the one I'm having is related to deployment on Openshift rather than an issue with the HTML of the page I'm visiting.

I'm using Node.js v0.10.25 and Zombie v2.2.1.

Answer 1

Are you sure the variable "browser" you are trying to work with is an Object, that error can occur if the variable is a string.

Answer 2

Can it be a CORS problem? .login is not a valid TLD and rules vary per TLD.