global.test1 = '';

app.get('/test1', function(req, res)
{
    global.test1 = '';
    global.test1 += '1';
    global.test1 += '2';
    global.test1 += '3';
    global.test1 += '4';
    global.test1 += '5';

    if (global.test1 != '12345')
    {
        console.log('not match: ' + global.test1);
    }

    res.end(global.test1.toString());
});

global.test2 = '';

app.get('/test2', function(req, res)
{
    global.test2 = '';

    var i = 0;
    var interval;

    var append = function()
    {
        i += 1;
        global.test2 += i.toString();

        if (i == 10)
        {
            clearInterval(interval);
            if (global.test2 != '12345678910')
            {
                console.log('not match: ' + global.test2);
            }

            res.end(global.test2);
        }
    };

    interval = setInterval(append, 1);
});