A really basic Phantom.js test.

basicphantomtest.js

// Run with phantomjs test.js http://whatever.com
// var chai = require('./node_modules/chai/index.js');

var page = require('webpage').create();
var system = require('system');

if (system.args.length === 1) {
    console.log('Usage: test.js <some URL>');
    phantom.exit();
}

var assert = function assert(condition, message) {
  if (!condition) {
    console.log('Assertion failed:', message);
  }
};

var t = Date.now();
var address = system.args[1];

page.open(address, function onPageOpened(status) {
  if (status !== 'success') {
    console.log('FAIL to load the address');
  }
  else {
    t = Date.now() - t;
    console.log('Loading time ' + t + ' msec');

    frontPageSuite(page);
  }
  phantom.exit();
});

function frontPageSuite(page) {
    var loginLink = page.evaluate(function findLoginLink() {
      return document.querySelector('a[href="/something/login"]');
    });
    assert(loginLink, 'Login link exists.');

    page.onLoadFinished = function(status){
      console.log('hey');
    }
    page.sendEvent('click', loginLink.offsetLeft + 20, loginLink.offsetTop + 20);
};