Test-Driven Ruby on Rails: Build a Real-World Application with TDD

Writing reliable web applications requires more than just knowing how to write code—it requires knowing how to test it. Many developers struggle to transition from basic syntax to building robust, production-ready systems that can adapt to change without breaking. This text-based course guides you through the process of building a professional Ruby on Rails application using Test-Driven Development (TDD) and Behavior-Driven Development (BDD). You will read step-by-step explanations, study clean code snippets, and learn how to write automated tests that ensure your application runs flawlessly before it ever reaches production. What you'll learn: - Understand the core principles of TDD and BDD using RSpec and Capybara. - Build an automated approval workflow with multi-tiered user permissions and roles. - Integrate third-party services safely using APIs for SMS alerts and email notifications. - Implement modern Rails conventions, including secure credentials management and clean database associations. - Design interactive user interfaces using modern Rails frontend practices like Hotwire and Stimulus. - Practice debugging and refactoring code confidently under the safety net of a comprehensive test suite. The course starts with the foundational concepts of testing theory and RSpec configuration before moving into a step-by-step written build of a real-world application. You will follow along with detailed code explanations, learning how to write the test first, watch it fail, and then write the exact code needed to make it pass. This course is designed for web developers who have a basic understanding of Ruby on Rails and want to transition to professional, test-driven development workflows. No advanced testing experience is required, as we start with the absolute basics of RSpec. Start reading today to elevate your Rails development skills and build applications with total confidence.