Manoj Kumar Kumar will discuss building test automation infrastructure using containers. He will cover continuous delivery, Selenium as a browser automation library, and using Selenium Grid to distribute tests across multiple browser instances. He will then discuss how using Docker containers can help address challenges with scaling tests and reduce costs compared to virtual machines. Manoj will demonstrate how to use the docker-selenium image to run a Selenium Grid hub and nodes within Docker containers.

1. MANOJ KUMAR KUMAR CONTAINER CAMP 2017-SYDNEY
BUILDING TEST-AUTOMATION INFRASTRUCTURE
VIA CONTAINERS

2. ABOUT ME
▸ Open source enthusiast
▸ Selenium member
▸ Author assertselenium.com
▸ Organizer seleniumconf.com
▸ Tweets: @manoj9788 | LinkedIn: manojkumar9788

3. CONTINUOUS DELIVERY
▸ It’s all about continuous delivery
Continuous Integration >
Continuous Testing >
Continuous Delivery

4. TEST AUTOMATION
▸ Browser Automation library
▸ A suite of tools
▸ JavaScript, Java, Python, C#, Ruby
▸ W3C candidate recommendation

5. SELENIUM-GRID
▸Hub
▸The intermediary and the manager
▸Allocates Test Slots to nodes
▸Takes instructions directly from client, and executes them remotely on nodes
▸Node
▸Registers itself to Hub listed in config
▸Communicates its config to the Hub at registration time:
▸Test Slots per browser
“Hey Hub, I have 1 Slot for Firefox, 5 for Chrome”
▸Receives JSON wire protocol instructions from the Hub
DISTRIBUTED TESTING

6. SELENIUM-GRID

7. CHALLENGES
▸ Tests start growing
▸ Parallelization reduces time
▸ VM’s are heavy and costly to maintain
Solution?
Docker Containers to rescue
‣ Light-weight
‣ All pre-requisites to run selenium tests are already packaged.
‣ Also for mobile..

8. https://github.com/SeleniumHQ/docker-selenium
Use Docker-compose to scale easily
DOCKER-SELENIUM

9. DOCKER-SELENIUM
▸ selenium/hub: Image for running a Selenium Grid Hub
▸ selenium/node-chrome: Selenium node with Chrome installed.
▸ selenium/node-firefox: Selenium node with Firefox installed.
▸ selenium/node-phantomjs: Selenium node with PhantomJS installed
▸ selenium/node-chrome-debug: Selenium node with Chrome installed and
runs a VNC server.
▸ selenium/node-firefox-debug: Selenium node with Firefox installed and runs
a VNC server.
All these images needs to be connected to a Selenium Grid Hub
DOCKER-SELENIUM IMAGES

10. https://github.com/manoj9788/kubernetes-docker-selenium - Star it! :)
Self-healing capability - helps restart the node when it goes down automatically, which helps in test
automation.
Scale containers - replicas
Use Helm package
$ helm install stable/selenium
KUBERNETES - SELENIUM