DevTools and Headless Chrome - The Automation Power-Couple

DEVTOOLS & HEADLESS CHROME: THE AUTOMATION POWER-COUPLE

Yonatan Mevorach {{company}} @cowchimp

”I can’t automate this” -- no one ever (after watching this talk)

Web Automation youtu.be/fsF7enQY8uI

Headless Browsers cbnd flic.kr/p/qnSPdN

Chrome

headless Chrome

headless Chrome

headless Firefox

Chrome DevTools

protocol Chrome DevTools

DevTools Embedding Frontendapp WebSockets ChromeAPI Headless Adapted from content by © Sami Kyöstilä, Google goo.gl/yQi9kZ

{ id: 1, method: "Runtime.evaluate", params: { expression: "1 + 1" } } DevTools Embedding Frontendapp ChromeAPI Headless Adapted from content by © Sami Kyöstilä, Google goo.gl/yQi9kZ

{ id: 1, method: "Runtime.evaluate", params: { expression: "1 + 1" } } DevTools Embedding Frontendapp ChromeAPI Headless { id: 1, result: { result: { type: "number", value: 2, description: "2" }, wasThrown: false } } Adapted from content by © Sami Kyöstilä, Google goo.gl/yQi9kZ

Accessibility Cache storage Animation Console CSS Device orientation DOM Emulation Heap profiler Inspector Page Application cache IO Profiler Service worker Database DOM debugger Debugger DOM storage IndexedDB Layer tree Rendering Input Memory Runtime Tracing Network Security Worker Adapted from content by © Sami Kyöstilä, Google goo.gl/yQi9kZ

DevTools Embedding client app DevTools Headlesstarget API Adapted from content by © Sami Kyöstilä, Google goo.gl/yQi9kZ

node --inspect index.js

headless protocol

chrome --headless --disable-gpu --remote-debugging-port=9222 https://devfest.gdg.org.ua

chrome --headless --disable-gpu --remote-debugging-port=9222 https://devfest.gdg.org.ua

chrome --headless --disable-gpu --remote-debugging-port=9222 https://devfest.gdg.org.ua

chrome --headless --disable-gpu --remote-debugging-port=9222 https://devfest.gdg.org.ua

chrome --headless --disable-gpu --remote-debugging-port=9222 https://devfest.gdg.org.ua

chrome --headless --disable-gpu --remote-debugging-port=9222 https://devfest.gdg.org.ua

DevTools Protocol Selenium Puppeteer

o pixabay.com/photo-175605

o pixabay.com/photo-175605

Recap! q goo.gl/j41BaC

tinyurl.com/ headless-talk @cowchimp blog.cowchimp.com

DEVTOOLS & HEADLESS CHROME: THE AUTOMATION POWER-COUPLE