Gangadhar gangadharjannu

End-to-end Testing with Shadow DOM

As the web component specs continue to be developed, there has been little information on how to test them. In particular the /deep/ combinator has been deprecated in Shadow DOM 1.0. This is particularly painful since most end-to-end testing frameworks rely on elements being discoverable by XPath or calls to querySelector. Elements in Shadow DOM are selectable by neither.

WebDriver.io

Webdriver.io has the standard actions by selectors, but also allows browser executable scripts to return an element

Use curl to get the JSON response for the latest release
Use grep to find the line containing file URL
Use cut and tr to extract the URL
Use wget to download it

curl -s https://api.github.com/repos/jgm/pandoc/releases/latest \
| grep "browser_download_url.*deb" \
| cut -d : -f 2,3 \
| tr -d \" \

Small script for development + builds with browserify.

Uses loose-envify for faster inlining and cross-env to handle windows/unix shells.

Dev features:

fast rebuilds w/ watchify, LiveReload, syntax errors in DOM, etc.

Build features:

uglify, simple dead code elimination, optimized bundle.

	copied from https://devcenter.heroku.com/articles/ssl-certificate-self

	install go and openssl

	mac os x: brew install go openssl

	Generate private key and certificate signing request

	openssl genrsa -des3 -passout pass:x -out server.pass.key 2048
	openssl rsa -passin pass:x -in server.pass.key -out server.key

	// App
	import { Component } from '@angular/core';

	@Component({
	selector: 'app',
	template: '<span>{{ sayHello() }}</span>',
	})
	export class App {
	public name: string = 'John';

	- Open Automator
	- File -> New -> Service
	- Change "Service Receives" to "files or folders" in "Finder"
	- Add a "Run Shell Script" action
	- Change "Pass input" to "as arguments"
	- Paste the following in the shell script box: open -n -b "com.microsoft.VSCode" --args "$*"
	- Save it as something like "Open in Visual Studio Code"

	<link rel="import" href="../../bower_components/polymer/polymer.html">

	<link rel="import" href="../../bower_components/iron-ajax/iron-ajax.html">
	<link rel="import" href="../../bower_components/paper-input/paper-input.html">

	<dom-module id="ajax-multiple">
	<template>
	<section id="content">
	<paper-input id="post" label="Post" value="{{title}}" on-blur="resolve">
	</paper-input>

	# overwrite master with contents of feature branch (feature > master)
	git checkout feature # source name
	git merge -s ours master # target name
	git checkout master # target name
	git merge feature # source name

	var fs = require('fs');
	var httpProxy = require('http-proxy');
	var http = require('http');
	var https = require('https');
	var express = require('express');
	var app = express();

	app.use(function (req, res, next) {
	console.log(req);
	if (req.url === '/') {

	// Get all users
	var url = "http://localhost:8080/api/v1/users";
	var xhr = new XMLHttpRequest()
	xhr.open('GET', url, true)
	xhr.onload = function () {
	var users = JSON.parse(xhr.responseText);
	if (xhr.readyState == 4 && xhr.status == "200") {
	console.table(users);
	} else {
	console.error(users);