selenium-grid-standalone-docker

An approach to run selenium UI tests on a standalone grid, using docker image specific to a browser e.g. chrome, firefox etc.

Uses image: https://hub.docker.com/r/selenium/standalone-firefox

Pre-requisites:

Docker
Docker Desktop (not mandatory, but recommended to start stop the daemon engine)
Start the docker engine

Refer: https://docs.docker.com/engine/install/

Steps to run:

Approach 1 (recommended):

A single command to download an image from docker hub, create a container, start the container with port mapping.

docker run -d -p 4444:4444 selenium/standalone-firefox

-d to run container in detached mode
-p 4444:4444 port mapping of local port to docker port
selenium/standalone-firefox name of the image to use to run the container, for chrome use selenium/standalone-chrome

To use a custome name for the container: docker run -d -p 4444:4444 --name selgrid selenium/standalone-firefox

Approach 2 (multi-step, for learning purposes):

Step by step approach to download image, create container, start container.

docker pull selenium/standalone-firefox

docker create selenium/standalone-firefox

docker start <name or id of container>

Use approach 1 or 2 to spin up the containers and then go to MainTest to run the sample tests. Add more tests, edit browser configs in DriverSetup. Following dependencies are already included:

Selenium 4
TestNG 7

After execution:

docker stop <name or id of container>

docker rm <name or id of container>

Note: all above steps can also be done from Docker Desktop client.

Other useful docker commands:

docker container ps - list running containers

docker container ps -a - list running and stopped containers

docker container logs <name or id of container> - when running in detached mode, to see container logs

docker exec -ti <name or id of container> /bin/bash - shell into running container to run commands on container's terminal. -t - allocates pseudo tty (unix terminology) -i - keeps std in open

venkat2789/selenium-grid-standalone-docker