[rspec-users] BDD and TDD (was "Newbie question with rspec on rails")

Andrew WC Brown omen.king at gmail.com
Mon Feb 4 11:07:08 EST 2008

David, I'll be your
Some people still sware using TDD over BDD.

On Feb 4, 2008 10:51 AM, David Chelimsky <dchelimsky at gmail.com> wrote:

> On Feb 4, 2008 1:20 AM, Pat Maddox <pergesu at gmail.com> wrote:
> > For some info on why BDD kicks TDD's butt ...
> Woah!
> I find this deeply disturbing. I believe your heart is in the right
> place here, so please don't take this as a personal attack, but this
> statement reflects a view that I see expressed quite often and I think
> we need to set the record straight on a few things.
> To be clear, what I'm about to express are my personal views and may
> not align with those of Dan, Dave, Aslak and others who are driving
> the BDD discussion.
> This is not a contest between approaches.
> BDD started off as a thought experiment: an attempt to find a better
> way to *talk* about TDD, because some of us who felt like we *got* TDD
> wanted to help those that we felt didn't. The process (at the object
> level) was (and remains) the same. We were just playing with words and
> constructs to better evoke what we believed to be the essence of TDD:
> driving out implementation with executable examples of the expected
> behaviour.
> Over time BDD has grown to include TDD (which is about the behaviour
> of objects) and an approach to Customer Acceptance Testing (which is
> about the behaviour of systems) called Acceptance Test Driven
> Planning. It's evolving into a full-stack agile process, so at this
> point trying to compare TDD with BDD doesn't make sense since the
> former is part of the latter.
> But even back when BDD was only about objects, it was still TDD at
> it's core. Not better than TDD. Not even different from TDD as
> practiced by those who really understood it.
> So while "TDD as intended" kicks "TDD the way many do"'s butt, and
> while BDD may help people to see the light, that light still belongs
> to TDD.
> David
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