Ernie Bello ebello

Testing ES6 React components with Gulp + Mocha + Istanbul

Recipe to test your ES6 React components.

$ npm install gulp gulp-util gulp-mocha gulp-istanbul isparta run-sequence babel jsdom

Note: You must name all your files .js, even if they contains JSX, or istanbul will not instrument them.

The Problem

If you have installed the standalone Command Line Tools for XCode on your Mac (i.e. without having XCode.app installed), some of these tools can get a bit confused due to a couple of oversights on Apple's part in finalising the setup.

Note: all commands below will need to be run from an Administrator account, or by an account with appropriate permission in /etc/sudoers.

The Solution

1. Failing to Find Frameworks

Sometime when compiling against the preinstalled Frameworks (e.g. Ruby or Python), various tools will inexplicable fail to find header files that are quite clearly there. This is caused by the fact that no XCode has been selected for the command-line tools. Wait, I hear you cry, I don't have XCode installed! Indeed, but you nonetheless need to select one, and point it somewhere where the command line tools exist, like so

	<head>
	<script>
	if (window.localStorage && window.localStorage._tk_cache) {
	document.documentElement.classList.add('wf-active');
	var script = document.createElement('script');
	script.innerHTML = localStorage._tk_cache + ";(function () {var timeout = setTimeout(function () {document.documentElement.classList.remove('wf-active');}, 300); Typekit.load({ async: false, active: function () { clearTimeout(timeout); }});})();";
	document.head.appendChild(script);
	}
	window._tk_onload = function () {
	var req = new XMLHttpRequest()

	/*
	Given the following html
	<nav>
	<ul>
	<li class="home"><a>Home</a></li>
	<li class="about"><a>About</a></li>
	<li class="blog"><a>Blog</a></li>
	<li class="contact"><a>Contact</a></li>
	</ul>
	</nav>

	using System;
	using System.Collections.Concurrent;
	using System.IO;
	using System.Linq;
	using System.Net;
	using System.Net.Http.Formatting;
	using System.Net.Http.Headers;
	using System.Text;
	using System.Threading.Tasks;
	using RazorEngine;

	Modernizr.load(
	[ '//platform.twitter.com/widgets.js'
	, '//apis.google.com/js/plusone.js'
	, { test: document.getElementById('facebook-jssdk')
	, nope: '//connect.facebook.net/en_US/all.js#xfbml=1'
	}
	]);

	/* When Using Modernizr, the above replaces all the social includes below

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	Version 2, December 2004

	Copyright (C) 2011 Jed Schmidt <http://jed.is>

	Everyone is permitted to copy and distribute verbatim or modified
	copies of this license document, and changing it is allowed as long
	as the name is changed.

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE

	Surround these with : e.g. :calling:

	+1
	-1
	bulb
	calling
	clap
	cop
	email
	feet

	// SomePage.aspx.cs (ASPX codebehind) function

	[System.Web.Services.WebMethod()]
	[System.Web.Script.Services.ScriptMethod()]
	public static string GetSomeObjects(string id)
	{
	//TODO: get stuff here
	}

	/*
	* Fabrizio Calderan, twitter @fcalderan, 2010.11.02
	* I had an idea: could Inception movie be explained by a few javascript closures
	* and variable resolution scope (just for fun)?
	*
	* Activate javascript console =)
	*/

	<script>
	console.group("inception movie");