sharp/tests/random.js

/*jslint node: true */
'use strict';

var sharp = require('../index');
var path = require('path');
var imagemagick = require('imagemagick');
var gm = require('gm');
var assert = require('assert');
var Benchmark = require('benchmark');

var fixturesPath = path.join(__dirname, 'fixtures');
var inputJpg = path.join(fixturesPath, '2569067123_aca715a2ee_o.jpg'); // http://www.flickr.com/photos/grizdave/2569067123/
var outputJpg = path.join(fixturesPath, 'output.jpg');

var min = 320;
var max = 960;

var randomDimension = function() {
  return Math.random() * (max - min) + min;
};

new Benchmark.Suite('random').add('imagemagick', {
	defer: true,
	fn: function(deferred) {
		imagemagick.resize({
			srcPath: inputJpg,
			dstPath: outputJpg,
			quality: 0.8,
			width: randomDimension(),
			height: randomDimension()
		}, function(err) {
			if (err) {
				throw err;
			} else {
				deferred.resolve();
			}
		});
	}
}).add('gm', {
	defer: true,
	fn: function(deferred) {
		gm(inputJpg).resize(randomDimension(), randomDimension()).quality(80).toBuffer(function (err, buffer) {
			if (err) {
				throw err;
			} else {
				assert.notStrictEqual(null, buffer);
				deferred.resolve();
			}
		});
	}
}).add('sharp', {
	defer: true,
	fn: function(deferred) {
		sharp(inputJpg).resize(randomDimension(), randomDimension()).toBuffer(function(err, buffer) {
			if (err) {
				throw err;
			} else {
				assert.notStrictEqual(null, buffer);
				deferred.resolve();
			}
		});
	}
}).on('cycle', function(event) {
  console.log(String(event.target));
}).on('complete', function() {
  var winner = this.filter('fastest').pluck('name');
  assert.strictEqual('sharp', String(winner), 'sharp was slower than ' + winner);
	console.dir(sharp.cache());
}).run();