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Docker in automated testing

November 6, 2016

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SPEAKER NAME

Andrei Varabyeu

EPAM Systems, Solution Architect

Architect and Key Developer of ReportPortal 5 years with EPAM and 7 years in ITAreas: Software Development and Automated TestingTechnologies: JVM-based stack

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• Why containers?• Problems they solve• Automated testing perspective

AGENDA

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• How to use docker (CLI, docker-compose) • Dockerfiles• Docker networking

NOT NOW

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Why?

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–Engineers need to spend time on setting up local environment which is not productive

–Setting up new environment is expensive

– Integration problems with different Operating Systems

–Building different app packs for different environments

Environment problems

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Problem: Tester’s perspective

STAG

ING

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Welcome to Hell

Static website

Web frontend

Background workers

User DB

Analytics DB

Queue

Development VM QA Server Single Prod

Server Onsite Cluster Public Cloud Contributor’s laptop

Customer Servers

? ? ? ? ? ? ?

? ? ? ? ? ? ?

? ? ? ? ? ? ?

? ? ? ? ? ? ?

? ? ? ? ? ? ?

? ? ? ? ? ? ?

Source: http://www.slideshare.net/dotCloud/why-docker

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Welcome to Hell

? ? ? ? ? ? ?

? ? ? ? ? ? ?

? ? ? ? ? ? ?

? ? ? ? ? ? ?

? ? ? ? ? ? ?

? ? ? ? ? ? ?

Source: http://www.slideshare.net/dotCloud/why-docker

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1950x: Cargo Hell

Multiplicity of goods

Multipilicity of methods for

transporting/storing

Do I worry about how goods interact (e.g. coffee beans

next to spices)

Can I transport quickly and smoothly

(e.g. from boat to train to truck)

Source: http://www.slideshare.net/dotCloud/why-docker

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Malcom McLean

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Solution: Intermodal Shipping Container

…in between, can be loaded and unloaded, stacked, transported efficiently over long distances, and transferred from one mode of transport to another

A standard container that is loaded with virtually any goods, and stays sealed until it reaches final delivery.

Source: http://www.slideshare.net/dotCloud/why-docker

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Malcom McLean

• Massive reduction in losses due to theft or damage

• Huge reduction in freight cost as percent of final goods (from >25% to <3%)

• 90% of all cargo now shipped in a standard container

• Order of magnitude reduction in cost and time to load and unload ships

Source: http://www.slideshare.net/dotCloud/why-docker

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Docker is a shipping container system for code

Development VM QA

serverPublic Cloud

Contributor’s laptopProduction

ClusterCustomer Data

Center

Static website

User DB

Analytics DB

Queue

Web frontend

DevOps: Configure Once, Run Anything

Developer/QA: Build Once, Run Anywhere

Source: http://www.slideshare.net/dotCloud/why-docker

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What it means?

Engineer can setup environment and start creating the value within 5 minutes

Each Engineer. You don’t need to be an expert in DevOps

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Docker vs Virtual Machine

Source: https://www.docker.com/what-docker

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Docker container anatomy

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Docker: how to build selenium server

Docker

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How?

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Automation perspective

• Start fresh environment• Test Initial Scripts• Test DB Update Scripts

• Perform disaster recovery testing• Perform DVT tests• Easy access to application logs

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Automation perspective

Tests

App 1 App 2

Docker

REST API

API Clientdocker-compose CLI

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Fresh Environment Scenario

[PRE] Deploy Test

[POST] Shutdow

n

Wait until SUT is UP

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Disaster Recovery Scenario

[PRE] Deploy

Check

Shutdown smth

Check

[POST] Shutdow

n

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DVT Tests

Gateway / Load Balancer

UI Service

API Service

XXX Service…

API Service

[2]

Internal Network

DVTTests

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Availability Tests

Gateway / Load Balancer

UI Service

API Service

XXXService…

API Service[2

]

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Thank you!

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CONTACT ME

andrei_varabyeu@epam.com

andrei.varabyeu

avarabyeu

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THANKYOU