Post on 08-Jan-2017
transcript
TESTING AS A CONTAINERUSING DOCKER CONTAINERS TO DELIVER TESTING AT SPEED
IRFAN AHMAD
CONTENTS
▸ Challenges :Testing and Delivery
▸ Docker and Friends
▸ Testing : In Containers ,On Containers
▸ Demo
▸ Docker In Practise
CHALLENGES : TESTING AND DELIVERY
WHY WE FAIL TO TEST?
45%
15%5%
35%
▸ Slow deployments
▸ Slow test and setup
▸ Ineffective tests
▸ Not needed
MATRIX FROM HELL - SHIP GOODS?
MATRIX FROM HELL - SHIP SOFTWARE?
MATRIX FROM HELL -SOLVED
SOFTWARE TRENDS
CONATINERS
A CONTAINER IS AN ENTIRE ISOLATED PORTABLE RUNTIME ENVIRONMENT: AN APPLICATION, PLUS ALL ITS DEPENDENCIES, LIBRARIES AND OTHER BINARIES, AND CONFIGURATION FILES NEEDED TO RUN IT, BUNDLED INTO ONE PACKAGE.
WHAT ARE CONTAINERS?
CONTAINERS VS VM
DOCKER▸ Docker is an open platform for developers and
sysadmins to build, ship, and run distributed applications.
INSIDE DOCKER ▸ Docker Image :static snapshot of the containers’
configuration.
▸ Docker Engine: a lightweight runtime and robust tooling that builds and runs your Docker containers.
▸ Docker Registry :a repository of images
DOCKER HUB
DOCKER TOOLBOX
HOW COMPONENTS FITS TOGETHER
DOCKER LIFECYCLE
HOW DOCKER WORKS
DOCKER RUNDOCKER LOOKS
FOR LOCAL IMAGES
IS IT INSTALLED
DOCKER LOOKS FOR IMAGES
FROM REGISTRY
NO
IS IT INSTALLED
DOCKER DOWNLOADS THE
IMAGE
IMAGE INSTALLED LOCALLY
DOCKER CREATES NEW
CONTAINER AND STARTS
PROGRAM
CONTAINER IS RUNNING
YES
DOCKER COMMANDS
DOCKERFILE▸ configuration file with build instructions for
Docker images
DOCKER-COMPOSE ▸ Compose is a tool for defining and running
multi-container Docker applications
▸ Compose is great for :
▸ development
▸ testing
▸ environments setup
▸ CI workflows
EXAMPLE
TESTING: IN CONTAINERS, ON CONTAINERS
DOCKER USE CASES
TRENDS IN TESTING▸ Agility
▸ Automation
▸ Devops
▸ Scale
▸ Diversity
TESTING CONTAINERS ,WHY ?
▸ easy setup
▸ fast
▸ shareable
▸ composable
▸ scalable
TESTING CONTAINERS ,HOW ?
▸ write dockerfiles for setup
▸ ship tests as docker images
▸ execute tests as containers
▸ compose with any other application ,tests or CI
DEMO
PRE-REQUISITES
▸ virtual-box
▸ download docker toolbox
▸ https://www.docker.com/products/docker-toolbox
CHECK SETUP
VOTING APP : APP UNDER TEST▸ Simple Real Time voting app
▸ Runs with Docker Compose and multiple containers in network
VOTING APP : COMPONENTS
DELIVER BELOW TESTS AS CONAINER TO TEST VOTING APP DOCKER IMAGE
1.API 2.WEB 3.LOAD
PROBLEM STATEMENT
USING IMAGES IN DOCKER COMPOSE
DOCKER IN PRACTICE
BEST PRACTICES
▸ One container one process
▸ Ship Images not code
▸ Required packages
▸ Specific tags
▸ Group common operations
SIMPLE CI WORKFLOW
FUTURE : CONTAINERS EVERYWHERE
Q & A
Github
https://github.com/irfanah/TestStack
https://github.com/irfanah/example-voting-app
Docker hub
https://hub.docker.com/u/irfanah/
Email :irfan@critick.io
Web :http://critick.io
Twitter: @irfanahmads
Open Sourced : for hands on
THANK YOU