[Process] TDD vs. BDD. Let's see what BDD and TDD … Using TDD, developers must ponder the end goals of their code first in a way that is more tangible than simply reading a specification. In TDD, the developers write the tests while in BDD the automated specifications are created by users or testers (with developers wiring them to the code under test.) TDD instructs developers to write new code only if an automated test has failed.

TDD is NOT about testing, it is a design discipline.

The full form of TDD is Test-driven development.

> I had a problem. And how do these tests lead us to BDD? BDD is just TDD with a better vocabulary.

In the prior example, the TDD test asserts the result of a specific method, while the BDD test is only concerned about the result of the higher level scenario. The more you learn about these technologies, the more you can discover their relationship in detail.

TDD/BDD/ATDD are software development techniques that can be used in any methodology although aspects of all three are often part of a team's agile approach.
by Andrea Koutifaris Test driven development has become popular over the last few years. The key difference is the scope. Dan North described it in the following way when he introduced BDD. I think one of the best resources on BDD is Specification by Example book. While TDD provides tests that drive development, those tests may or may not be helping you meet those goals. I'd be happy with an example of where someone has successfully used TDD in cobol, together with some guidance and gotchas on what works and what doesn't.

While it's easy to pit TDD vs. BDD vs. ATDD and so on, you never need to pick just one organization-wide approach. BDD is designed to test an application’s behavior from the end user’s standpoint, whereas TDD is focused on testing smaller pieces of functionality in isolation. BDD has a broader audience tester, managers, analysts. TDD may also be faster than BDD in that BDD requires more setup and communication across teams prior to writing the tests. This is a false dichotomy. Rachel Davis has a nice explanation of BDD="Shared understanding by discussing examples". BDD is an abstraction of TDD (Test Driven Development) .They both essentially follow the same practices, but, BDD focuses more on the behavior of the application, rather than implementation, using a language where all stakeholders can participate and collaborate.

This avoids duplication of code. BDD, as the name suggests, illustrates the methods of developing a feature based on its behavior.

“BDD practitioners explore, discover, define, then drive out the desired behaviour of software using conversations, concrete examples, and automated tests.” There are a lot of words on the page and actually, if you squint a little bit, it goes all blurry.

Before I introduce you to BDD, let's take a step back in time and delve a little in Test-Driven Development (TDD). So describe what you want the system to do and talk about some examples.

TDD is Test-Driven Development: the idea is that unit tests are written first, then enough code is written to make the tests pass.

BDD is just TDD with a better vocabulary. What is TDD? And others think that it is basically a waste of time. The Difference Between BDD and TDD BDD and TDD have become more popular, but many don't understand their differences.

In TDD world you will here also BDD “Behavioral-Driven Development” where its a TDD using a specific testing approach describing the behavior in a simple language. BDD (TDD) is fractal, it works at multiple levels of resolution, and needs to be applied at multiple levels of resolution to be effective. Behavior Driven Development or BDD is an extension to Test Driven Development. For small, co-located, developer-centric teams, TDD and BDD are effectively the same.
Many of you have heard about the TDD Red-Green-Refactor cycle, but what does “Write a failing test” really mean? The WHY Behind the Code: BDD vs. TDD The difference between BDD and TDD is that BDD begins with a B and TDD begins with a T. But seriously, the gotcha with TDD is that too many developers focused on the "How" when writing their unit tests, so they ended up with very brittle tests that did nothing more than confirm that the …