Slides from my talk at TestFest conference in Wroclaw, Poland, 2019

1. Testing challenges at
microservices worldOleksandr Romanov

2. What we will cover today
1 Moving from monoliths to microservices
2 Adapting testing to new challenges
3 What else?

3. Who am I
7+ years in test automation
Automate: Web, Mobile, Desktop,
[micro]Services
QA Automation Lead @ Playtika

5. Monolith era

6. Monolith architecture

7. Classical testing triangle by M.Cohn
End2End
Service
Unit

8. Key points about
monoliths
Need to redeploy whole system
for release
Tied to chosen database
Complex logic and component
connections

9. WHY
MICROSERVICES?

10. Microservices
architecture

11. Why microservices?
SMALL INDEPENDENT FAST
SCALABLE LANGUAGE-AGNOSTIC

12. What about other side?

13. More connected parts

14. More technologies

15. More data

16. More complexity

17. More unpredictability

18. How to test it?

19. Test trapezium for microservices
Exploratory
End - to - End
Contract
Component
Unit

20. Unit testing
Code level

21. Component testing
Service
API
SQL / NoSQL
Database (Docker)
External
services API
(Wiremock)
Message
Queue
(Docker)

22. Component testing
Code level
Spring Boot test
Arqullian test
Tools
Spring Boot test containers

23. Contract testing in general

25. Contract
example

27. Contract testing
What to cover: Service - to - service
What to cover: Client - to -service
Tools:
1. Spring Cloud Contract
2. PACT

28. End to End testing: API
Code level
RestAssured
Karate
Wiremock
Tools
Postman
Swagger
Charles Proxy
Fiddler
RestClient
SoapUI

29. End to End testing: UI
Libraries
Tools
Katalon Studio
Testim.IO
UFT

30. Exploratory testing
Mind mapping
Screen recording
Testing checklists
Heuristic book
Test Strategy Model
37 Testing Ideas
List of Naughty Strings

31. What's next?

32. Real world

33. Testing in production
1 Monitoring
2 Tracing
3 Feature flagging
4 Gradual opening
5 Dynamic traffic analysis

34. Conclusions
Microservices brings more
testing challenges
Changes in architecture
and processes require
changes in strategies and
tools
Testing in production is
crucial
Zoom in and zoom out
while testing

35. Contacts
Dnipro, Ukraine
alex_roma_nov
www.linkedin.com/in/oleksandr-romanov
@al8xr
http://alexromanov.github.io

36. QUESTIONS? FIND MORE:
THANK YOU!