JavaScript for-in Loop Stuck

I'm writing this looping test in Mocha, trying to get it to visit a url taken from sitesObj, do a test, then repeat with the others. The only problem is the url variable is "https://www.example.com/about" throughout all of the tests.

In short: test.describe(site... is working in the loop, but driver.get(url... is not.

My code is below. Any help is very much appreciated!

//Driver + test setup
var sitesObj = {
    "Homepage": "https://www.example.com",
    "About Page": "https://www.example.com/about"
}

for (site in sitesObj) {
    var cid;
    var pageName = site;
    var url = sitesObj[site];

    test.describe(site + ' CID Cookie Set Test', function() {

        test.beforeEach(function(done) {
            //Driver stuff
            cid = Math.random().toString(36).substring(2, 6);

            console.log(url + '?cid=' + cid);  //URL is ALWAYS ...site.com/about... 
            driver.get(url + '?cid=' + cid);   //URL is ALWAYS ...site.com/about...

            driver.manage().timeouts().implicitlyWait(10000);
            done();
        });

        //afterEach, quit, done
        //Test 1, done
        //Test 2, done
    });
}