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- goog.setTestOnly('goog.testing.PerformanceTimer');
- goog.provide('goog.testing.PerformanceTimer');
- goog.provide('goog.testing.PerformanceTimer.Task');
- goog.require('goog.array');
- goog.require('goog.async.Deferred');
- goog.require('goog.math');
- goog.testing.PerformanceTimer = function(opt_numSamples, opt_timeoutInterval) {
-
- this.numSamples_ = opt_numSamples || 10;
-
- this.timeoutInterval_ = opt_timeoutInterval || 5000;
-
- this.discardOutliers_ = false;
- };
- goog.testing.PerformanceTimer.now_ = function() {
-
- return !goog.DEBUG && window.performance && window.performance.now ?
- window.performance.now() :
- goog.now();
- };
- goog.testing.PerformanceTimer.prototype.getNumSamples = function() {
- return this.numSamples_;
- };
- goog.testing.PerformanceTimer.prototype.setNumSamples = function(numSamples) {
- this.numSamples_ = numSamples;
- };
- goog.testing.PerformanceTimer.prototype.getTimeoutInterval = function() {
- return this.timeoutInterval_;
- };
- goog.testing.PerformanceTimer.prototype.setTimeoutInterval = function(
- timeoutInterval) {
- this.timeoutInterval_ = timeoutInterval;
- };
- goog.testing.PerformanceTimer.prototype.setDiscardOutliers = function(discard) {
- this.discardOutliers_ = discard;
- };
- goog.testing.PerformanceTimer.prototype.isDiscardOutliers = function() {
- return this.discardOutliers_;
- };
- goog.testing.PerformanceTimer.prototype.run = function(testFn) {
- return this.runTask(
- new goog.testing.PerformanceTimer.Task(
- (testFn)));
- };
- goog.testing.PerformanceTimer.prototype.runTask = function(task) {
- var samples = [];
- var testStart = goog.testing.PerformanceTimer.now_();
- var totalRunTime = 0;
- var testFn = task.getTest();
- var setUpFn = task.getSetUp();
- var tearDownFn = task.getTearDown();
- for (var i = 0; i < this.numSamples_ && totalRunTime <= this.timeoutInterval_;
- i++) {
- setUpFn();
- var sampleStart = goog.testing.PerformanceTimer.now_();
- testFn();
- var sampleEnd = goog.testing.PerformanceTimer.now_();
- tearDownFn();
- samples[i] = sampleEnd - sampleStart;
- totalRunTime = sampleEnd - testStart;
- }
- return this.finishTask_(samples);
- };
- goog.testing.PerformanceTimer.prototype.finishTask_ = function(samples) {
- if (this.discardOutliers_ && samples.length > 2) {
- goog.array.remove(samples, Math.min.apply(null, samples));
- goog.array.remove(samples, Math.max.apply(null, samples));
- }
- return goog.testing.PerformanceTimer.createResults(samples);
- };
- goog.testing.PerformanceTimer.prototype.runAsyncTask = function(task) {
- var samples = [];
- var testStart = goog.testing.PerformanceTimer.now_();
- var testFn = task.getTest();
- var setUpFn = task.getSetUp();
- var tearDownFn = task.getTearDown();
-
-
-
- var result = new goog.async.Deferred();
- this.runAsyncTaskSample_(
- testFn, setUpFn, tearDownFn, result, samples, testStart);
- return result;
- };
- goog.testing.PerformanceTimer.prototype.runAsyncTaskSample_ = function(
- testFn, setUpFn, tearDownFn, result, samples, testStart) {
- var timer = this;
- timer.handleOptionalDeferred_(setUpFn, function() {
- var sampleStart = goog.testing.PerformanceTimer.now_();
- timer.handleOptionalDeferred_(testFn, function() {
- var sampleEnd = goog.testing.PerformanceTimer.now_();
- timer.handleOptionalDeferred_(tearDownFn, function() {
- samples.push(sampleEnd - sampleStart);
- var totalRunTime = sampleEnd - testStart;
- if (samples.length < timer.numSamples_ &&
- totalRunTime <= timer.timeoutInterval_) {
- timer.runAsyncTaskSample_(
- testFn, setUpFn, tearDownFn, result, samples, testStart);
- } else {
- result.callback(timer.finishTask_(samples));
- }
- });
- });
- });
- };
- goog.testing.PerformanceTimer.prototype.handleOptionalDeferred_ = function(
- deferredFactory, continuationFunction) {
- var deferred = deferredFactory();
- if (deferred) {
- deferred.addCallback(continuationFunction);
- } else {
- continuationFunction();
- }
- };
- goog.testing.PerformanceTimer.createResults = function(samples) {
- return {
- 'average': goog.math.average.apply(null, samples),
- 'count': samples.length,
- 'maximum': Math.max.apply(null, samples),
- 'minimum': Math.min.apply(null, samples),
- 'standardDeviation': goog.math.standardDeviation.apply(null, samples),
- 'total': goog.math.sum.apply(null, samples)
- };
- };
- goog.testing.PerformanceTimer.TestFunction;
- goog.testing.PerformanceTimer.Task = function(test) {
-
- this.test_ = test;
- };
- goog.testing.PerformanceTimer.Task.prototype.setUp_ = goog.nullFunction;
- goog.testing.PerformanceTimer.Task.prototype.tearDown_ = goog.nullFunction;
- goog.testing.PerformanceTimer.Task.prototype.getTest = function() {
- return this.test_;
- };
- goog.testing.PerformanceTimer.Task.prototype.withSetUp = function(setUp) {
- this.setUp_ = setUp;
- return this;
- };
- goog.testing.PerformanceTimer.Task.prototype.getSetUp = function() {
- return this.setUp_;
- };
- goog.testing.PerformanceTimer.Task.prototype.withTearDown = function(tearDown) {
- this.tearDown_ = tearDown;
- return this;
- };
- goog.testing.PerformanceTimer.Task.prototype.getTearDown = function() {
- return this.tearDown_;
- };
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