PhantomJS test script for window.location

location.js

var page = require('webpage').create();
var base = phantom.args[0];
var path = phantom.args[1];
var expected = phantom.args[2];

page.onNavigationRequested = function(url, navigationType, navigationLocked, isMainFrame) {
    console.log('Navigation requested: ' + navigationType + '; ' + url);
    if (!page.testStarted) {
        return;
    }
    if (url === expected) {
        console.log('PASS');
        phantom.exit();
    }
};

page.open(base, function(status) {
    page.testStarted = true;
    console.log('window.location = ' + path);
    page.evaluate(function(path) {
        window.location = path;
    }, path);
});

setTimeout(function() {
    console.log('FAIL: navigation to ' + path + ' never happened');
    phantom.exit(1);
}, 5000);

Yeah, just tried with PhantomJS 1.9.7 (with google.com and github.com), and it indeed doesn't work. Do you have an idea how to get around this?