var data = [ {
name : "a",
field : 1
}, {
name : "a",
field : 2
}, {
name : "a",
field : 3
}, {
name : "b",
field : 4
}, {
name : "b",
field : 5
} ];
test('COUNT, AGV and SUM grouped by name', function() {
var res = _.aggregateBy(data, "name", {
"count" : "field",
"sum" : "field",
"avg" : "field"
});
equal(res.a.count_field, 3);
equal(res.b.count_field, 2);
equal(res.a.avg_field, 2);
equal(res.b.avg_field, 4.5);
equal(res.a.sum_field, 6);
equal(res.b.sum_field, 9);
});
test('COUNT, AGV and SUM', function () {
var res = _.aggregate(data, {"count": "field", "sum":"field", "avg":"field"});
equal(res.count_field,5);
equal(res.avg_field,3);
equal(res.sum_field,15);
});