我有这段代码，我想浏览页面底部所有可用的链接。单击它们后，我要确保打开的URL是正确的。我认为递归调用还为时过早。另一个问题是如何判断链接属于某个URL。

function links(browser, total_links) {
    if (total_links <= 0) {
        browser.end();
        return;
    }

    console.log("Number of links: " + total_links);
    console.log('Flag1');

         browser
            .waitForElementVisible('.bottom .socal>span:nth-child(' + total_links + ')', 1000, function () {

            console.log('Flag2');
            browser.execute('scrollIntoView(alignToBottom)')

            .moveToElement('.bottom .socal>span:nth-child(' + total_links + ')', 3, 3)
                .pause(3000)
                .click('.bottom .socal>span:nth-child(' + total_links + ') a', function () {
                    console.log('Flag3');
                    browser.keys(['\uE006'])
                    //  .assert.urlContains('facebook')
                    //.assert.urlEquals('https://www.facebook.com/unitel.ao/?fref=ts')
                            .window_handles(function (result) {
                            console.log('Flag4');
                            browser.assert.equal(result.value.length, 2, 'There should be two windows open.');
                            var handle_1 = result.value[0];
                            var handle_2 = result.value[1];
                            browser.switchWindow(handle_2, function () {
                                browser.closeWindow()
                                    .switchWindow(handle_1, function () {
                                        total_links = total_links - 1;
                                        links(browser, total_links);
                                    });
                            });
                         });

                    console.log('Flag5');
                });
            console.log('Flag6');   
        });
}

module.exports = {
    'Social links': function (browser) {
        var total_links;

        browser
            .url('http://m.unitel.ao/fit/')
            .execute(function () {
                    return document.querySelectorAll("ul.navbar-nav>li").length;
                },
                function (tags) {
                    total_links = tags.value;
                    links(browser, total_links);

                });

        //  .end();
    }
};