This document discusses strategies for testing microservices architectures. It begins with an overview of monolithic vs microservices architectures and some of the challenges of testing microservices. It then outlines several strategies for effectively testing microservices, including: establishing cross-functional teams, sharing knowledge across teams, implementing different levels of testing from unit to integration to non-functional, using contracts and behavior-driven development, and emphasizing automation and integration of testing early in the development process. Tools like Docker, Postman, and Selenium are recommended.

1. SUCCESSFUL
STRATEGIES FOR
MICRO SERVICES
TESTING - AN ECOMMERCE
Sundaresan Krishnaswami
Felicia Kartika
Agile Testing Alliance Bangalore 13th
Meetup

2. KEY
TAKEAWA
YS
- Brief intro Monolithic and Micro-service
architecture
- Analyze challenges in micro-services testing
- Agile solutions to tackle challenges

3. MONOLITHIC VS
MICRO SERVICES

4. THE
MONOLITHS
- Architecture – all in one
 UI
 Business Logic
 Database
- Single war file
 Easy to deploy
 Easy to scale

5. THE
MONOLITHS
(CONTD…)
Culture
 One Team Manages it all
 Easy to communicate
within team
 Single codebase
 Developers know most of
their codebase

6. THE MONOLITHS
(DRAWBACKS)
Huge codebase
Debugging is tricky for new comers
Overloaded container
Entire container brought down for
deployments
Moving to latest technologies is almost
impossible
Limited innovation

7. MONOLITHS VS MICRO
SERVICES

8. THE MICRO SERVICES

9. THE MICRO
SERVICES
(CONTD…)
- Each function in its own container
- Many technology stacks
- Talks a common protocol – often
REST APIs
- Services deployed independently
- Issues in one service need not
affect the other
- Limited performance impact
- Scope for innovation
- Autonomy for the team

10. COMPANIES EMBRACING
MICRO SERVICES

11. THE MICRO
SERVICES
(DRAWBACKS)
- Tackling distributed systems
- Deployment complexity
- Maintaining data consistency between
services
- Tackling communication between teams
- Strategize decoupling or decompose
services
- Culture driven

12. TESTING
CHALLENGES

13. MICRO SERVICES GROWTH
A
B
C
D
E
F G
H
I
J K
L
M
N
O

14. TESTING CHALLENGES

15. NO TIME
NO RESOURCE
DEADLINE

16. TESTING
CHALLENGES
- Strategy to cover all layers

17. TESTING
CHALLENGE
S
Complete coverage
Coverage across services
Coverage around
interaction points
Non-functional coverage
Dependent on other
teams

18. STRATEGIES

19. TEAM MGMT
Product
Manager
UX Developer
Quality
Assurance
DB Admin
Team 1
Team 2

20. KNOWLEDGE SHARING

21. PERFORMANCE TESTING

22. Non
functional
Testing
Integration
Test
Component Test
Unit Test
Click to add text
THE TESTING PYRAMID

23. UNIT TEST
Non
functional
Testing
Integration
Test
Component Test
Unit Test

24. RED [Fail]
• Write a test
that fails
GREEN
[Pass]
• Make the
code work
REFACTOR
• Improve
code quality
TDD Approach

25. UNIT TEST BEST PRACTICES
Write unit tests for all sociable
business logic
Cover all states - the application
transitions
Cover all interactions and
collaborations with other services

26. RECOMMENDED TOOLS

27. COMPONENT TEST
Non
functional
Testing
Integration
Test
Component Test
Unit Test

28. AUTOMATE THE COMPONENT
TEST
Product
Service
Cart
Service
Payment
Service
Order
Service
e-commerce

29. RECOMMENDED TOOLS

30. CONTRACT TESTING
Non
functional
Testing
Integration
Test
Component Test
Unit Test

31. UI contract
Mockup
Giving Unique ID for automation
API Contract
Request Body
Response Body
CONTRACT TESTING

32. INTEGRATION TEST
Non
functional
Testing
Integration
Test
Component Test
Unit Test

33. VERIFY ALL THE
COMPONENT COMMUNICATE
WELL

34. VERIFY ALL THE
COMPONENT COMMUNICATE
WELL
Product
Service
Cart Service
Payment
Service
Order Service
E-commerce

35. TOOLS WE USE

36. THE BDD APPROACH
A common language across
stakeholders – Gherkin
Enables all stake holders to read
and be on the same page
Uses the fail, pass, refactor
approach
Helps implement automation
early in the release
 A story narrative
Customer orders a handphone
As a customer
I want to buy a handphone so that I
don't have to buy from offline store
 Given, When, Then Scenarios
Given that I can add a handphone to
cart
When the item is available in stock
Then I should be able to pay and
complete the order

37. NON FUNCTIONAL
TESTING
Non
functional
Testing
Integration
Test
Component Test
Unit Test

38. NON FUNCTIONAL TESTING
UI Testing
Performance Testing
Load Testing
Compatibility Testing
others

39. TOOLS WE USE

40. MANUAL TESTING
STRATEGY

41. MANUAL
TESTING
STRATEG
Y
Understand all the requirement
Join the sprint planning, meeting, standup meeting
Have a blitz meeting with PM, Dev, QA (cross
services)
Conduct blitz testing among QA teams
Discuss when you found a hole in the system

42. IN CONCLUSION
Microservices is the future
Embrace the challenges
Keep essential documentation
Embrace automation early
Identify the right tools
Don't spend too much time on
identifying tools :)