Guide to Testing Node.js Applications with Jest and TypeScript
Topics covered
Testing Principles: Understand the importance of testing and distinctions between unit, integration, and end-to-end testing.
Environment Setup: Install Node.js, npm, TypeScript, and Jest.
Writing Your First Test: Create a simple function and write a test using Jest and TypeScript.
Test Organization and Isolation: Organize tests using describe blocks and ensure test isolation.
Arranging, Acting, and Asserting: Follow the AAA pattern for test cases.
Testing Asynchronous Code: Handle asynchronous operations with Jest's capabilities.