gerich-home/it-depends

var Benchmark = require('benchmark');
var itDepends = require('../../out/dist/it-depends.js');
var ko = require('knockout');

module.exports = function(updatesCount, subscribersCount) {
    Benchmark.prototype.args = {
        updatesCount: updatesCount,
        subscribersCount: subscribersCount,
        ko: ko,
        itDepends: itDepends
    };

    Benchmark.prototype.setup = function() {
        var updatesCount = this.args.updatesCount;
        var subscribersCount = this.args.subscribersCount;
        var ko = this.args.ko;
        var itDepends = this.args.itDepends;

        var initialValue = -1;

        function _noop() {
            return function() {};
        }
        
        var koobservable = ko.observable(initialValue);
        var idobservable = itDepends.value(initialValue);
        
        var kocomputed = ko.pureComputed(function() {
            return koobservable();
        });
        
        var idcomputed = itDepends.computed(function() {
            return idobservable();
        }).withNoArgs();

        for(var i = 0; i < subscribersCount; ++i) {
            kocomputed.subscribe(_noop());
        }

        for(var i = 0; i < subscribersCount; ++i) {
            idcomputed.onChange(_noop());
        }
    };
    
    var suite = new Benchmark.Suite('computed updated ' + updatesCount + ' times with ' + subscribersCount + ' subscribers');

    suite.add('knockout', function() {
        for (var j = 0; j < updatesCount; j++) {
            koobservable(j);
        }
    });

    suite.add('itDepends', function() {
        for (var j = 0; j < updatesCount; j++) {
            idobservable.write(j);
        }
    });

    return suite;
};