A reproduction of the original mailing list thread that spawned the idea of this site.

Mark:

Rather than hijack my own thread I thought I would start a new one. Based on a comment from Olaf I realized that there is a real lack of problems that people use to learn/practice TDD.

Here are the ones I know of:

A list no but I seem remember - that a lot of people like doing a TDD bowling game - Ron has tried a number of different problems overtime on his blog: http://xprogramming.com/xpmag/index.htm <http://xprogramming.com/xpmag/index.htm>examples seem to include Suduko, … - Brian Marick once proposed a non-trivial example - I think this might be the link: www.exampler.comwriting*tdd*-workbook.pdf

Please let me know what I’m missing and I will find a wiki of putting a list up somewhere accessible.

Carl:

Hi, Mark,

> Please let me know what I'm missing and I will find a wiki of putting a list
> up somewhere accessible.

Among my favorites are Range (very short and simple; integer range, initially compels you to decide whether it’s half-open, etc.; gets a little interesting when you write overlaps(), which typically provides some opportunities for refactoring) and NaturalSort? (longer, but straightforward and easy to understand, and to appreciate as a real-world problem).

Natural Sort: <http://www.codinghorror.com/blog/archives/001018.html>

Olof:

This is a great idea!

In fact, I had it too

So I’ve started a tiddlywiki (a mini-wiki that can be downloaded/modified offline..) here:

http://tdd-problems.tiddlyspot.com

Carl, may I add NaturalSort? and Range as problems on http://tdd-problems.tiddlyspot.com ?

Carl:

Hi, Olaf,

On Thu, Sep 11, 2008 at 12:36 PM, Olof Bjarnason <olof.bjarnason@gmail.com> wrote:

> Carl, may I add NaturalSort and Range as problems on
> http://tdd-problems.tiddlyspot.com ?

Of course. Thanks for asking, but - I don’t own these problems; have at ‘em!

Here’s a link to slides & code I wrote at a presentation for Natural Sort, if you’d like to include it:

<http://www.socalcodecamp.com/session.aspx?sid=d6a0b292-0e13-4685-b769-5169734e32c3>

It wasn’t designed for publication, so there may not be much value in it, but - have a look, see whether there’s anything there.

Olof:

Thanks! I’ll have a look.

The way I’m thinking now, tdd-problems.tiddlyspot.com should be a collaborative collection of “basic” TDD problems, playground problems, still somewhat real-world. Just good examples to learn TDD from.

Your two examples matches that precisely

I’ve already added the links, just have to fill in the problem statements.

Since then we’ve moved to http://sites.google.com/site/tddproblems/ !