waitForUrlToChangeTo.js

/**
 * @name waitForUrlToChangeTo
 * @description Wait until the URL changes to match a provided regex
 * @param {RegExp} urlRegex wait until the URL changes to match this regex
 * @returns {!webdriver.promise.Promise} Promise
 */
function waitForUrlToChangeTo(urlRegex) {
    var currentUrl;

    return browser.getCurrentUrl().then(function storeCurrentUrl(url) {
            currentUrl = url;
        }
    ).then(function waitForUrlToChangeTo() {
            return browser.wait(function waitForUrlToChangeTo() {
                return browser.getCurrentUrl().then(function compareCurrentUrl(url) {
                    return urlRegex.test(url);
                }, function() {
                    return waitForUrlToChangeTo();
                });
            });
        }
    );
}