TESTING

Unit Testing

Ensure code reliability by isolating and testing individual units of logic automatically.

~20 hours

Learning Objectives

Write unit tests utilizing assertions, setup, and teardown functions.
Isolate units by mocking external dependencies and modules.
Measure and analyze test coverage metrics.

Core Topics

Test runners (Jest, PyTest)AssertionsMocking and StubbingTest Driven Development (TDD)Code Coverage

Practical Exercise

Take a complex utility function (e.g., a custom date formatter), write a comprehensive suite of unit tests for all edge cases using Jest or PyTest, and achieve 100% coverage.

Recommended Learning Resources

📖 Learn by Reading

Test-Driven Development: By Example

Kent Beck

The seminal book on writing automated tests and the TDD methodology.

Open Recommended Book →

🎥 Learn by Watching

Jest Crash Course - Unit Testing in JavaScript

Traversy Media • YouTube • 55:00

Quick and practical guide to writing unit tests using Jest.

Watch Video →

Related Skills

Testing Jest Mocha