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Testing Microservices at Scale
Discover Card Acquisitions
Kishore Kota, Sindhu Nair
Agenda
Paradigm Shift in Testing
Monolithic vs Micro Services
Test Pyramid
End-to-end Test Strategy
Q & A
E2E
UAT
Integration
DEV
E2E
Acceptance
Integration
DEV
Paradigm Shift in Testing
Paradigm Shift in Testing
Testing Monolithic vs Micro Service
● Heavy reliance on End-To-End testing
● Longer Testing Cycle
● Lots of moving pieces
● Smaller Test Surface Area
● More complex system integration
Testing Pyramid
Unit Testing
• Validate code in Isolation
• Make use of Mocking and
Stubbing
• Validate code behavior
• Fine grained test cases
Contract Testing
System Integration Testing
• Stub out API Dependencies locally
• Actual API when deployed to actual runtime
• Validation focus should be on your API
Backwards Compatibility Testing
• Can the old app work with new Database ?
• Does the blue – green install cause outage ?
• Can the release be backed out if needed ?
Performance Testing
• Create automation focusing on API boundaries
• Isolate test subject by decoupling from dependencies using virtualization
• Make sure test are run in short intervals and provide quick feedback
Vulnerability Testing
• Reuse Integration Test artifacts
• Execute System Integration Test for Contrast DSAT
• Pipeline to enforce governance
Disruptive Testing
• Simulate infra down to see app behavior
• Get to a known state with outage
• Identify gaps in design to address downtime
End to End User Journey Testing
• Daily execution of E2E user
journey test suite
• Dedicated test environment
• Refreshed from prod every
morning
• Changes are staged to test
environment before cut off
time
• Failed test cases are rerun
Browser Compatibility Testing
• Executed in parallel to end-to-end testing
• Use Selenium WebDriver
• Leverage Cross Browser Testing tool
Production Smoke Testing
• Staging space in Production to ensure Application are configured correctly and validate network
connection
• Validate JWT
• Validate Connectivity to dependent apis
• Check Certificates and Network Connection
Testing Stages and Testing Environments
Pipeline delivers code to
next stage after
successful completion of
previous stage of testing
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How the Testing Pyramid is executed ?
Q & A

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Microservices Testing at Scale

  • 1. Testing Microservices at Scale Discover Card Acquisitions Kishore Kota, Sindhu Nair
  • 2. Agenda Paradigm Shift in Testing Monolithic vs Micro Services Test Pyramid End-to-end Test Strategy Q & A
  • 4. Testing Monolithic vs Micro Service ● Heavy reliance on End-To-End testing ● Longer Testing Cycle ● Lots of moving pieces ● Smaller Test Surface Area ● More complex system integration
  • 6. Unit Testing • Validate code in Isolation • Make use of Mocking and Stubbing • Validate code behavior • Fine grained test cases
  • 8. System Integration Testing • Stub out API Dependencies locally • Actual API when deployed to actual runtime • Validation focus should be on your API
  • 9. Backwards Compatibility Testing • Can the old app work with new Database ? • Does the blue – green install cause outage ? • Can the release be backed out if needed ?
  • 10. Performance Testing • Create automation focusing on API boundaries • Isolate test subject by decoupling from dependencies using virtualization • Make sure test are run in short intervals and provide quick feedback
  • 11. Vulnerability Testing • Reuse Integration Test artifacts • Execute System Integration Test for Contrast DSAT • Pipeline to enforce governance
  • 12. Disruptive Testing • Simulate infra down to see app behavior • Get to a known state with outage • Identify gaps in design to address downtime
  • 13. End to End User Journey Testing • Daily execution of E2E user journey test suite • Dedicated test environment • Refreshed from prod every morning • Changes are staged to test environment before cut off time • Failed test cases are rerun
  • 14. Browser Compatibility Testing • Executed in parallel to end-to-end testing • Use Selenium WebDriver • Leverage Cross Browser Testing tool
  • 15. Production Smoke Testing • Staging space in Production to ensure Application are configured correctly and validate network connection • Validate JWT • Validate Connectivity to dependent apis • Check Certificates and Network Connection
  • 16. Testing Stages and Testing Environments Pipeline delivers code to next stage after successful completion of previous stage of testing C o n t i n u o u s I n t e g r a t i o n , C o n t i n u o u s D e l i v e r y How the Testing Pyramid is executed ?
  • 17. Q & A