dockerizedautomated tests: profit and principles · 2019. 4. 26. · agenda what docker is...
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Dockerized automated tests: profit and principles
IT Weekend Dnipro: Automation Testing and Business Analysis
Dmytro Serdiuk
Who am I
Dmytro Serdiuk
Test automation architect at SOFTSERVE
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Agenda
What Docker isDocker and test automationWhy dockerized automated testsPrinciples of dockerization
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Concept
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Containers benefits
LIGHTWEIGHT
STANDARD
SECURE
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Test infrastructure: Selenium Grid
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Docker + Selenium Grid
https://github.com
/SeleniumHQ/docker-selenium
/aerokube/selenoid9
Idea
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Motivation
Environment issues
Parallel execution
Collaboration speed
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Steps
Make tests configurable
Create Docker image
Document usage
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Principal Dockerfile
FROMmaven:3.5-jdk-8-slim
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Dockerfile: Base image selection
Minimal sizeAlways specify tag
maven:3.5-jdk-8-slimUse your own base image
Pre-installed toolsUnder your control
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Principal Dockerfile
FROM maven:3.5-jdk-8-slimCOPY . .RUN mvn dependency:go-offline
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Dockerfile: Tests installation
Minimize image sizeOnly needed toolsNo cache
Add metadata LABEL, VOLUME
Keep your files separatelyWORKDIR
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Principal Dockerfile
FROM maven:3.5-jdk-8-slimCOPY . .RUN mvn dependency:go-offlineENTRYPOINT ["mvn --offline"]CMD ["test"]
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Dockerfile: Run configuration
Make ready-to-run imagesENTRYPOINT ["mvn --offline"]
Define default run optionsCMD ["mvn –offline test -Dapi=calc-service"]
Use wrapper scriptENTRYPOINT ["./run.sh"]
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Tests configuration
Files sharing with VOLUMEs
Image’s argument
Environment variables
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Multi-container apps
Play with custom networks
Use docker-compose or other
orchestrator
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Demo project
https://github.com/extsoft/jcat
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Summary
SUT
Test infrastructure
Tests execution
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Q & A
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