From test-driven development to Behavior-driven development

This is the second blog post of our new Testing Tuesday series. Every Tuesday we will share our insights and opinions on the software testing space. Drop by every Tuesday to learn more!


Last Testing Tuesday we talked about test-driven development. We considered it the basis for Behavior-driven

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development. But what’s the difference between them?

Test-driven development focuses on the developer’s opinion on how parts of the software should work. Behavior-driven development focuses on the users’ opinion on how they want your application to behave.

Behavior-driven development

Test-driven development is rather a paradigm than a process. It describes the cycle of writing a test first, and application code afterwards – followed by an optional refactoring. But it doesn’t make any statements about

  • Where do I begin to develop?
  • What exactly should I test?
  • How should tests be structured and named?

The name test-driven development also caused confusion. How can you test something that’s not there yet? – From test-driven development to Behavior-driven development by Clemens Helm