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perf(benchmarks): benchmark measuring cost of decorators (fixes angular#1479)
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‎modules/angular2/src/dom/browser_adapter.es6‎

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@@ -102,7 +102,7 @@ export class BrowserDomAdapter extends GenericBrowserDomAdapter {
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nodeValue(node:Node):string {
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return node.nodeValue;
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}
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type(node:string) {
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type(node:Node) {
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return node.type;
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}
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content(node:HTMLElement):Node {

‎modules/benchmarks/e2e_test/costs_perf.es6‎

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var perfUtil = require('angular2/src/test_lib/perf_util');
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describe('ng2 cost benchmark', function () {
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var URL = 'benchmarks/src/costs/index.html';
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var benchmarkSize = 200;
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afterEach(perfUtil.verifyNoBrowserErrors);
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it('should log stats for baseline (plain components)', function(done) {
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perfUtil.runClickBenchmark({
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url: URL,
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buttons: ['#reset', '#createPlainComponents'],
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id: 'ng2.costs.baseline',
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params: [{
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name: 'size', value: 200, scale: 'linear'
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}]
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}).then(done, done.fail);
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});
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it('should log stats for components with decorators', function(done) {
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perfUtil.runClickBenchmark({
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url: URL,
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buttons: ['#reset', '#createComponentsWithDecorators'],
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id: 'ng2.costs.decorators',
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params: [{
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name: 'size', value: 200, scale: 'linear'
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}]
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}).then(done, done.fail);
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});
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});

‎modules/benchmarks/pubspec.yaml‎

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@@ -18,6 +18,7 @@ transformers:
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- angular2:
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entry_points:
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- web/src/compiler/compiler_benchmark.dart
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- web/src/costs/index.dart
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- web/src/di/di_benchmark.dart
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- web/src/element_injector/element_injector_benchmark.dart
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- web/src/largetable/largetable_benchmark.dart

‎modules/benchmarks/src/costs/index.html‎

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<!doctype html>
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<html>
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<body>
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<h2>Params</h2>
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<form>
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Size:
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<input type="number" name="size" placeholder="size" value="100">
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<br>
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<button>Apply</button>
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</form>
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<h2>Benchmarks</h2>
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<button id="reset">Reset</button>
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<table>
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<tr>
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<td>Baseline (plain components)</td>
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<td><button id="createPlainComponents">Run</button></td>
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</tr>
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<tr>
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<td>Cost of decorators</td>
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<td><button id="createComponentsWithDecorators">Run</button></td>
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</tr>
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</table>
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<app></app>
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$SCRIPTS$
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</body>
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</html>

‎modules/benchmarks/src/costs/index.js‎

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import {
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bootstrap,
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Component,
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Decorator,
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View
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} from 'angular2/angular2';
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import {LifeCycle} from 'angular2/src/core/life_cycle/life_cycle';
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import {List, ListWrapper} from 'angular2/src/facade/collection';
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import {reflector} from 'angular2/src/reflection/reflection';
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import {ReflectionCapabilities} from 'angular2/src/reflection/reflection_capabilities';
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import {getIntParameter, bindAction} from 'angular2/src/test_lib/benchmark_util';
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import {If, For} from 'angular2/directives';
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var testList = null;
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export function main() {
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reflector.reflectionCapabilities = new ReflectionCapabilities();
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var size = getIntParameter('size');
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testList = ListWrapper.createFixedSize(size);
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bootstrap(AppComponent).then((ref) => {
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var injector = ref.injector;
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var app:AppComponent = injector.get(AppComponent);
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var lifeCycle = injector.get(LifeCycle);
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bindAction('#reset', function() {
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app.reset();
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lifeCycle.tick();
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});
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// Baseline (plain components)
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bindAction('#createPlainComponents', function() {
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app.createPlainComponents();
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lifeCycle.tick();
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});
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// Components with decorators
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bindAction('#createComponentsWithDecorators', function() {
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app.createComponentsWithDecorators();
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lifeCycle.tick();
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});
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});
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}
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@Component({selector: 'app'})
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@View({
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directives: [If, For, DummyComponent, DummyDecorator],
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template: `
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<div *if="testingPlainComponents">
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<dummy *for="#i of list"></dummy>
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</div>
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<div *if="testingWithDecorators">
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<dummy dummy-decorator *for="#i of list"></dummy>
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</div>
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`
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})
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class AppComponent {
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list:List;
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testingPlainComponents:boolean;
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testingWithDecorators:boolean;
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constructor() {
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this.reset();
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}
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reset():void {
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this.list = [];
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this.testingPlainComponents = false;
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this.testingWithDecorators = false;
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}
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createPlainComponents():void {
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this.list = testList;
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this.testingPlainComponents = true;
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}
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createComponentsWithDecorators():void {
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this.list = testList;
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this.testingWithDecorators = true;
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}
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}
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@Component({selector: 'dummy'})
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@View({template: `<div></div>`})
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class DummyComponent {}
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@Decorator({selector: '[dummy-decorator]'})
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class DummyDecorator {}

‎modules/benchmarks/src/index.html‎

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<li>
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<a href="largetable/largetable_benchmark.html">Largetable benchmark</a>
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</li>
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<li>
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<a href="costs/index.html">Benchmarks measuring costs of things</a>
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</li>
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</ul>
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</body>
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</html>

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