AdvancedAdvanced4 weeks

Testing

Verify backend behavior with fast unit tests, realistic integration tests, E2E tests, and load tests.

Topic 18 of 24

Prerequisites

Backend Frameworks
Databases

Key Concepts & Skills

Unit Testing
Integration Testing
End-to-End Testing
Load Testing
Test services
Mock dependencies
Spin up test databases
Measure load behavior

Learning Outcomes

Understand the core principles of Unit Testing
Configure and deploy Integration Testing successfully
Troubleshoot common issues with End-to-End Testing
Understand the core principles of Load Testing
Configure and deploy Test services successfully
Troubleshoot common issues with Mock dependencies
Understand the core principles of Spin up test databases
Configure and deploy Measure load behavior successfully

Resources

Official Docs

Jest docs pytest docs k6 docs

Practice Exercises

Write unit tests for services.Run integration tests against a test database.Load test one endpoint.

Project Task

Create a tested e-commerce API with payment-flow mocks.

Quiz

When is an integration test more valuable than a unit test?Explain the answer with one real-world example.List one mistake a beginner might make here.

Notes