foo.js

tape('index feature', function(t) {
    var range = [];
    for (var i = 1; i < 100; i++) range.push(i);
    range.forEach(function(i) {
        t.test('addFeature', function(tt) {
            addFeature(conf.street, {
                id:i,
                properties: {
                    'carmen:text':'Main Street',
                    'carmen:zxy':['6/14/18'],
                    'carmen:center':[-100,60],
                    'carmen:score': 2
                }
            }, function() {
                tt.end();
            });
        });
    });
    t.end();
});