When the BDD approach is highly effective. What you need to make it work in your company.

What Is BDD? And How Did It Come About?

Before BDD, there was Test-Driven Development (TDD) and Acceptance Test-Driven Development (ATDD). While TDD and ATDD have their strengths, they were much more concerned with development and programmers. In other words, it was all about code, unit tests, and the nitty-gritty technical details of the development. For example, TDD advocates writing tests before the basic functionality is implemented.

Understanding BDD From a Business Perspective

At its core, BDD is defined by business value and centered around the user’s point of view.

When is BDD Highly Effective?

Okay, now you know what the BDD development methodology is, but when does it really work? What elements need to be in place to support effective behavior-driven development?

conditions when BDD approach works

Advantages of Behavior Driven Development

  • Ubiquitous language — There is a unified language and a common rule for the team, which facilitates better test creation.
  • Collaborative approach — With BDD, any team member, such as analyst, business user, developer, and tester, can join the tests at any stage. The tests are clear and easily readable to all participants in the process.
  • Ease of programming — In BDD, a specification is a test scenario. The testers don’t need to undertake the time-consuming task of writing separate test documentation because the analyst has already done it for them, writing the specification in a way that is readable and understandable to every team member. By having a structure and a common vocabulary of terms, you can quickly create a set of scenarios.
  • High visibility — By opting for a unified language understood by all, visibility and transparency of the project’s progress are increased.
  • Design translates to value — By setting such high importance on the business value and needs, BDD empowers developers to create better products because they have a strong understanding of what the business wants.
  • Developer confidence — As a general rule, agile BDD teams are more confident in the code and can make better predictions.
  • Up to date information — When we work according to BDD methodology, auto testing and specifying accompany each stage of the software development cycle, ensuring that autotests and documentation are always up-to-date.
  • Lower costs — With BDD, you improve the quality of the code, which in turn reduces project risks and costs associated with rework and maintenance.

The Tools We Use (BDD Tools Recommended by the Active Bridge Team)

  • RSpec — Described as “making TDD productive and fun,” RSpec is a BDD tool for Ruby. The simplicity of the RSpec syntax makes it one of the popular testing tools for Ruby applications.
  • Cucumber — Cucumber is a BBD framework that businesses can use to write acceptance tests for web applications. It’s a tool to write human-readable tests that are mapped into code. The easily readable format of functional validation features and the robust logical language (Gherkin) makes it highly usable for developers, testers, and business analysts.
  • Capybara — Capybara is a BDD tool that interacts with a website much like a human would. For example, the tool could visit a URL, click a link, and type and submit text in a text form. It’s primarily used to mimic a user’s flow through a website.
  • Selenium — Selenium is a functional testing automation tool for web-based applications. It supports different languages, including Ruby, Python, C#, etc.

Final Thoughts

By finishing this article, you should now have a solid understanding of what BDD is and what you need to do to make it work in your company. You should also have a clear idea of the benefits of BDD for business and which tools you can implement to aid software development in Rails apps.



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