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A collection of 36 issues

TDD and Database Interactions: Testing Data Layer

Introduction Testing database interactions is a crucial part of Test-Driven Development. This article explores strategies for effectively testing database operations while maintaining test isolation and performance. Test Database Setup // database.test.js describe('Database Tests', () => { let db; beforeAll(async () => { db = await setupTestDatabase(); }); afterAll(async () => { await

TDD in JavaScript: Modern Testing Practices

Introduction JavaScript's dynamic nature and ecosystem present unique challenges and opportunities for Test-Driven Development. This article explores modern TDD practices in JavaScript. Setting Up a TDD Environment // package.json { "scripts": { "test": "jest --watch", "test:coverage": "jest --coverage" }, "

TDD and Clean Architecture: A Perfect Match

Introduction Test-Driven Development and Clean Architecture complement each other perfectly. This article explores how to combine these practices to create maintainable and testable software. Clean Architecture Principles Clean Architecture provides a way to structure applications with clear boundaries and dependencies: * Independence of frameworks * Testability * Independence of UI * Independence of database

TDD and SOLID Principles: A Perfect Match

Introduction Test-Driven Development and SOLID principles complement each other perfectly. This article explores how TDD naturally leads to SOLID code and how SOLID principles make code more testable. Single Responsibility Principle (SRP) TDD encourages SRP by making us think about behavior in small, focused units: // Bad: Multiple responsibilities class UserManager

TDD and Security Testing: Building Secure Applications

Introduction Security testing is a crucial aspect of Test-Driven Development. This article explores how to incorporate security testing into your TDD workflow to build more secure applications. Input Validation Testing // userValidation.test.js describe('User Input Validation', () => { test('should reject SQL injection attempts', () => { const

TDD in Frontend Development: Testing React Components

Introduction Test-Driven Development in frontend development, particularly with React, requires a different approach than backend testing. This article explores how to effectively test React components and frontend logic. Component Testing // Button.test.jsx import { render, screen, fireEvent } from '@testing-library/react'; import Button from './Button'; describe('