C# Test-Driven Development with SpecFlow and NUnit

Writing reliable, maintainable software requires more than just writing code—it requires a test-first mindset. This course guides you through the core principles of Test-Driven Development (TDD) and Behavior-Driven Development (BDD) using C# and NUnit. You will transition from writing tests as an afterthought to using tests as a design tool. Through clear explanations and structured code examples, you will learn how to structure robust unit tests, implement the red-green-refactor cycle, and use SpecFlow to bridge the gap between business requirements and technical implementation. What you'll learn: - Understand the fundamental laws and phases of the Test-Driven Development workflow - Apply the red-green-refactor cycle to design clean, maintainable C# code - Write behavioral tests using SpecFlow to align software development with business requirements - Implement unit tests with NUnit and modern mocking techniques for isolated testing - Practice core TDD techniques like triangulation, faking, and obvious implementation - Configure automated UI tests for desktop applications using TestStack White - Test asynchronous C# code and understand how to integrate test suites into modern workflows The course begins with foundational TDD concepts and terminology before moving into practical coding patterns and step-by-step implementations. You will then explore behavior-driven development with SpecFlow and progress to automated UI testing and modern C# testing practices. This course is designed for beginner to intermediate C# developers who want to adopt professional testing workflows. No prior testing experience is required, though a basic understanding of C# syntax is recommended. Start building more reliable C# applications today by adopting a professional test-driven workflow.