I just discovered that what I’m writing right now is a new TDD kata. Very interesting and useful TDD kata.
Interesting because usual C# developer uses LINQ extension methods on every day basis and it is interesting to re-implement by your own what you use so often.
Useful by the same reason, and also if you have a project stuck with .NET 2.0 then you’re getting a nice, written by yourself, fully tested LINQ extension methods replacement.
Sounds cool! Doesn’t it?

So here’s the kata description:

• Start up with simple methods such as Count(), Where() and Select()
• End up with complex methods such as GroupBy() and Aggregate()