gerich-home/it-depends

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

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

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

        var initialValue = -1;

        function _noop() {
            return function() {};
        }
        
        function setupKnockout() {
            var x = [];
            for (var j = 0; j < dependenciesCount; j++) {
                x.push(ko.observable(-1));
            }

            var a = ko.pureComputed(function() {
                var z = 0;
                for (var j = 0; j < dependenciesCount; j++) {
                    z += x[j]();
                }
                return z;
            });

            var b = ko.pureComputed(function() {
                return a();
            });

            var c = ko.pureComputed(function() {
                return a();
            });

            var d = ko.observable(initialValue);

            var e = ko.pureComputed(function() {
                return d() % 2 == 0 ? b() : c();
            });

            var s = e.subscribe(function(){
                
            });
            
            return d;
        }
        
        function setupitDepends() {
            var x = [];
            for (var j = 0; j < dependenciesCount; j++) {
                x.push(itDepends.value(-1));
            }

            var a = itDepends.computed(function() {
                var z = 0;
                for (var j = 0; j < dependenciesCount; j++) {
                    z += x[j]();
                }
                return z;
            });

            var b = itDepends.computed(function() {
                return a();
            });

            var c = itDepends.computed(function() {
                return a();
            });

            var d = itDepends.value(-1);

            var e = itDepends.computed(function() {
                return d() % 2 == 0 ? b() : c();
            });

            var s = e.onChange(function(){
                
            });
            
            return d;
        }
        
        var koobservable = setupKnockout();
        var idobservable = setupitDepends();
    };
    
    var suite = new Benchmark.Suite('computed diamond updated ' + updatesCount + ' times with ' + dependenciesCount + ' hidden dependencies');

    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;
};