classnames/benchmarks/run.js

var fixtures = [
	{
		description: 'strings',
		args: ['one', 'two', 'three'],
		expected: 'one two three'
	},
	{
		description: 'object',
		args: [{ one: true, two: true, three: false }],
		expected: 'one two'
	},
	{
		description: 'strings, object',
		args: ['one', 'two', { four: true, three: false }],
		expected: 'one two four'
	},
	{
		description: 'mix',
		args: ['one', { two: true, three: false }, { four: 'four', five: true }, 6, {}],
		expected: 'one two four five 6'
	},
	{
		description: 'arrays',
		args: [['one', 'two'], ['three'], ['four', ['five']], [{ six: true }, { seven: false }]],
		expected: 'one two three four five six'
	}
];

var local = require('../');
var dedupe = require('../dedupe');
var localPackage = require('../package.json');

try {
	var npm = require('classnames');
	var npmDedupe = require('classnames/dedupe');
	var npmPackage = require('./node_modules/classnames/package.json');
} catch (e) {
	console.log('There was an error loading the benchmark classnames package.\n' +
		'Please make sure you have run `npm install` in ./benchmarks\n');
	process.exit(0);
}

if (localPackage.version !== npmPackage.version) {
	console.log('Your local version (' + localPackage.version + ') does not match the installed version (' + npmPackage.version + ')\n\n' +
		'Please run `npm update` in ./benchmarks to ensure you are benchmarking\n' +
		'the latest version of this package.\n');
	process.exit(0);
}

var assert = require('assert');
var benchmark = require('benchmark');

function sortClasses (str) {
	return str.split(' ').sort().join(' ');
}

fixtures.forEach(function (f) {
	// sort assertions because dedupe returns results in a different order
	assert.equal(sortClasses(local.apply(null, f.args)), sortClasses(f.expected));
	assert.equal(sortClasses(dedupe.apply(null, f.args)), sortClasses(f.expected));
	assert.equal(sortClasses(npm.apply(null, f.args)), sortClasses(f.expected));
	assert.equal(sortClasses(npmDedupe.apply(null, f.args)), sortClasses(f.expected));

	var suite = new benchmark.Suite();

	suite.add('local#' + f.description, function () {
		local.apply(null, f.args);
	});

	suite.add('  npm#' + f.description, function () {
		npm.apply(null, f.args);
	});

	suite.add('local/dedupe#' + f.description, function () {
		dedupe.apply(null, f.args);
	});

	suite.add('  npm/dedupe#' + f.description, function () {
		npmDedupe.apply(null, f.args);
	});

	// after each cycle
	suite.on('cycle', function (event) {
		console.log('*', String(event.target));
	});

	// other handling
	suite.on('complete', function () {
		console.log('\n> Fastest is' + (' ' + this.filter('fastest').pluck('name').join(' | ')).replace(/\s+/, ' ') + '\n');
	});

	suite.on('error', function (event) {
		throw event.target.error;
	});

	suite.run();
});