angular-cn/modules/@angular/platform-browser/testing/perf_util.ts

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export {verifyNoBrowserErrors} from './e2e_util';
var benchpress = global['benchpress'];
var bind = benchpress.bind;
var Options = benchpress.Options;
export function runClickBenchmark(config) {
browser.ignoreSynchronization = !config.waitForAngular2;
var buttons = config.buttons.map(function(selector) { return $(selector); });
config.work = function() { buttons.forEach(function(button) { button.click(); }); };
return runBenchmark(config);
}
export function runBenchmark(config) {
return getScaleFactor(browser.params.benchmark.scaling)
.then(function(scaleFactor) {
var description = {};
var urlParams = [];
if (config.params) {
config.params.forEach(function(param) {
var name = param.name;
var value = applyScaleFactor(param.value, scaleFactor, param.scale);
urlParams.push(name + '=' + value);
description[name] = value;
});
}
var url = encodeURI(config.url + '?' + urlParams.join('&'));
return browser.get(url).then(function() {
return global['benchpressRunner'].sample({
id: config.id,
execute: config.work,
prepare: config.prepare,
microMetrics: config.microMetrics,
providers: [bind(Options.SAMPLE_DESCRIPTION).toValue(description)]
});
});
});
}
function getScaleFactor(possibleScalings) {
return browser.executeScript('return navigator.userAgent')
.then(function(userAgent: string) {
var scaleFactor = 1;
possibleScalings.forEach(function(entry) {
if (userAgent.match(entry.userAgent)) {
scaleFactor = entry.value;
}
});
return scaleFactor;
});
}
function applyScaleFactor(value, scaleFactor, method) {
if (method === 'log2') {
return value + Math.log(scaleFactor) / Math.LN2;
} else if (method === 'sqrt') {
return value * Math.sqrt(scaleFactor);
} else if (method === 'linear') {
return value * scaleFactor;
} else {
return value;
}
}