Beginning Test-Driven Development and Automated Testing

Writing software without a solid testing strategy often leads to fragile code, unexpected bugs, and stressful deployments. By adopting test-driven development (TDD) and automated testing, you can build applications with confidence, knowing your code behaves exactly as intended. This text-based course guides you from the absolute basics of testing to implementing modern automated workflows. You will transition from manually checking your code to writing automated test suites that run in seconds, ensuring your software remains stable as it grows. Throughout this journey, you will read through clear explanations, explore real-world code examples, and practice structured testing patterns. What you will learn: - Understand the core principles of unit testing, integration testing, and the test pyramid - Master the red-green-refactor workflow to design cleaner, more maintainable code - Write effective unit tests using modern testing frameworks and assertion libraries - Implement isolation techniques using test doubles, mocks, and stubs - Configure automated test runners and integrate testing into modern CI/CD pipelines - Apply test-driven development to prevent regressions and improve software architecture We start with the absolute fundamentals, establishing key terminology, foundational definitions, and the philosophy behind automated testing. From there, you will progress through practical testing scenarios, testing logic, handling external dependencies, and establishing continuous integration habits. This course is designed specifically for beginners and junior developers who want to write professional-grade code. No prior testing experience is required, though a basic understanding of any programming language is helpful. Start reading today to build more robust software with the power of automated testing.