Test-Driven Development: Tips and Tricks After 15 Years of Practice

✅Test-driven development is an iterative process that involves thinking, creating tests, and refactoring code.

🚀Organize your code by capabilities or functional slices to identify natural seams in your architecture.

❓Dependency inversion principle is about organizing code in a way that dependencies flow from high-level modules to low-level modules.

✍Use tests to drive your design and identify patterns that can be refactored to improve code quality.

✨Test-driven development helps improve code maintainability and supports the evolution of a software system over time.

What is test-driven development?

—Test-driven development is a software development approach that involves writing tests before writing production code. It helps improve code quality and supports the development of more maintainable software systems.

Why is organizing code by capabilities important?

—Organizing code by capabilities helps identify natural seams in the architecture, making it easier to understand and maintain the codebase. It also aligns with the dependency inversion principle, allowing for more flexible and modular code.

How can tests drive the design of a software system?

—Tests can drive the design of a software system by identifying patterns and dependencies within the codebase. They help uncover the need for abstraction and promote decoupling, leading to more cohesive and modular software design.

What are the benefits of test-driven development?

—Test-driven development helps improve code quality, reduces defects, and encourages better design decisions. It also enhances maintainability by providing automated regression testing and supports the evolution of the software system over time.

Can test-driven development be applied to any programming language?

—Yes, test-driven development can be applied to any programming language. The principles and practices are language-agnostic, focusing on the process of writing tests before writing production code.

00:06Introduction to the speaker replacing the original presenter due to illness.

00:17Test-driven development: an iterative process involving thinking, creating tests, and refactoring code.

05:30The importance of organizing code by capabilities or functional slices to identify natural seams in the architecture.

06:00Dependency inversion principle: organizing code to allow high-level modules to depend on abstractions and low-level modules.

06:55Using tests to drive the design and identify patterns for refactoring.

09:02Test-driven development improves code maintainability and supports the evolution of software systems.