Peter pbaio

The Ultimate Unit Testing Cheat-sheet

Sinon Chai
Chai
Sinon

Dustin Moskovitz is a cofounder of Asana, and was a co-founder of Facebook. Here are some of his favorite books.

Many thanks to Dustin for this list.

On Consciousness

Douglas R. Hofstadter

Godel, Escher, Bach: An Eternal Golden Braid

ANNOUNCEMENT

I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!

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This article has been given a more permanent home on my blog. Also, since it was first written, the development of the Promises/A+ specification has made the original emphasis on Promises/A seem somewhat outdated.

You're Missing the Point of Promises

Promises are a software abstraction that makes working with asynchronous operations much more pleasant. In the most basic definition, your code will move from continuation-passing style:

getTweetsFor("domenic", function (err, results) {
 // the rest of your code goes here.

Node.js core does its best to treat every platform equally. Even if most Node developers use OS X day to day, some use Windows, and most everyone deploys to Linux or Solaris. So it's important to keep your code portable between platforms, whether you're writing a library or an application.

Predictably, most cross-platform issues come from Windows. Things just work differently there! But if you're careful, and follow some simple best practices, your code can run just as well on Windows systems.

Paths and URLs

On Windows, paths are constructed with backslashes instead of forward slashes. So if you do your directory manipulation

	import React from "react";
	import { render } from "react-dom";

	const ParentComponent = React.createClass({
	getDefaultProps: function() {
	console.log("ParentComponent - getDefaultProps");
	},
	getInitialState: function() {
	console.log("ParentComponent - getInitialState");
	return { text: "" };

	/* require XLSX */
	var XLSX = require('XLSX')

	function datenum(v, date1904) {
	if(date1904) v+=1462;
	var epoch = Date.parse(v);
	return (epoch - new Date(Date.UTC(1899, 11, 30))) / (24 * 60 * 60 * 1000);
	}

	function sheet_from_array_of_arrays(data, opts) {

	'use strict';
	var gulp = require('gulp');
	var gutil = require('gulp-util');
	var del = require('del');
	var uglify = require('gulp-uglify');
	var gulpif = require('gulp-if');
	var exec = require('child_process').exec;


	var notify = require('gulp-notify');

	<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
	<html>
	<head>
	<link rel="stylesheet" href="http://code.jquery.com/qunit/git/qunit.css" type="text/css" media="screen" />

	<!-- when.js Promises implementation -->
	<script src="https://raw.github.com/cujojs/when/master/when.js"></script>

	<!-- Unit testing and mocking framework -->
	<script type="text/javascript" src="http://code.jquery.com/qunit/git/qunit.js"></script>