Hooking Docker With Selenium
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Docker allows packaging an application and its dependencies into a standardized unit for software development. This document discusses using Docker with Selenium to run automated UI tests. It provides commands for running Docker, describes downloading Selenium images and running a grid/nodes. A demo project shows connecting tests to a Dockerized grid. Challenges include legacy apps with dependencies and latency issues for some Docker commands when using Boot2Docker on Windows/Mac instead of Linux.
Hooking Docker With Selenium
- 1. Integrate Docker With Selenium- C#- Mbunit framework
- 2. Agenda What is Docker Advantages Frequently used Commands How to hook Docker into Selenium? Demo Challenges
- 3. What is Docker?? An open source tool that can package an application and its dependencies such as libraries in a virtual container Can run on any Linux server Automates the deployment of applications inside software containers YouTube Video: https://www.youtube.com/watch?v=pGYAg7TMmp0
- 4. Advantages No longer need a virtual machine spin up for each application Greater portability (Solves the problem of Shipping code from one machine to another) Lesser resources Virtual Machines Vs Docker
- 5. Boot2Docker Commands: Docker sits on top of Linux kernel and inorder to access it from Windows or Mac OS , we need to install boot2docker Download Location: ◦ https://github.com/boot2docker/windows-installer/releases
- 6. Docker Commands Once the boot2docker VM is up and running , you can use the below commands Command list: https://docs.docker.com/reference/commandline/run/
- 7. Hook Docker into Selenium Download the Images to your local: Hub (Server): docker pull selenium/hub:latest Nodes (Browsers): docker pull selenium/node-chrome:2.44.0 docker pull selenium/node-chrome:2.45.0 docker pull selenium/node-chrome:latest Export the images to an archive(.tar file) if needed ◦ docker save -o ~/Downloads/docker_selenium_hub.tar selenium/hub ◦ docker save –o ~/Downloads/docker_selenium_node_chrome.2.46.0.tar selenium/node-chrome:2.46.0 Load the images from the .tar file ◦ docker load --input ~/Downloads/docker_selenium_hub.tar All these images are maintained by Selenium development team https://github.com/SeleniumHQ/docker-selenium https://hub.docker.com/
- 8. Running the Selenium Grid/Node Start your Selenium Grid (Registering the Hub and the Nodes) ◦ docker run -d -p 4444:4444 --name selenium-hub selenium/hub ◦ docker run -d --link selenium-hub:hub selenium/node- chrome:2.45.0 Verify if your grid is running ◦ bootdocker ip (192.168.59.103) ◦ http://192.168.59.103:4444/grid/console
- 9. Demo Run a Sample UI acceptance test by pointing the hub address to be boot2docker ip address Github: Project Url https://github.com/sujithvakathanam/Do cker-C--MbunitFramweork-for-UI- acceptance-Test
- 10. Challenges Legacy app with too many dependencies and complexities may not be suitable Still in the Early phase Latency between boot2docker and Linux kernel ◦ Eg:Starting or Stopping or Removing a container do have latency issues
- 11. Q & A???
Editor's Notes
- #6: Docker sits on top of linux kernal. Boot2 docker is a lightweight linux distribution made to run Docker Containers. It runs completely from RAM Environment Variables: Name: DOCKER_CERT_PATH Value: C:\Users\XXX\.boot2docker\certs\boot2docker-vm Name: DOCKER_HOST Value: tcp://192.168.59.103:2376 Name:DOCKER_TLS_VERIFY Value: 1