What are the differences between TDD and BDD in Node.js applications?

What are the differences between TDD and BDD in Node.js applications?

TDD, or Test-Driven Development, focuses on writing tests before the actual code, ensuring that the code meets the requirements. BDD, or Behavior-Driven Development, emphasizes collaboration between developers, QA, and non-technical stakeholders to define the behavior of the application.

Can you give me an example of TDD in a Node.js app?

Sure! In TDD, you would start by writing a test for a function, say add(a, b), that checks if it returns the correct sum. Then, you would write the minimal code to pass that test, and finally refactor the code while keeping the test green.

What about an example of BDD?

In BDD, you might use a framework like Cucumber. You would write a feature file describing the behavior, such as "Given I have a calculator, when I add 2 and 3, then I should get 5." Then, you implement the code to make this behavior pass.

Which approach is better for a new project?

It depends on your team's needs. TDD is great for ensuring code quality, while BDD is better for collaboration and understanding requirements. Many teams find a combination of both works best.