Object Mentor Blog: Rudimentary TDD with XCode and Objective-C

Rudimentary TDD with XCode and Objective-C

Brett Schuchert — Mon, 08 Feb 2010 18:24:00 -0600

We have a potential client that would like us to teach a TDD class in several languages simultaneously:

Java
JavaScript
C++
Objective-C

In turns out that for what we teach in our TDD class, Java, C++ and Objective-C can be taught at the same time fairly easily. JavaScript, however, not so much. It is a very different (great, but different) beast.

In fact I could add C# to the mix as well, but I’d have to leave out LINQ and Lambdas.

In any case, to teach a class like that, I prefer to have the students do a bit of preliminary work so that they know how to set up their environments. When there’s just one language, I do this on the fly. But when there’s 3, I don’t want 2/3rds of the class waiting while 1/3rd learns how to create a basic project supporting TDD.

The last time I used Objective-C was in 1991, so I needed to figure out how to do this in the environment it is most likely to be used. This turned out to be a bit more work than I expected. I found it all using the good old google-machine, but in pieces. Since there really wasn’t a great (in my opinion) one-stop place that clearly laid out all of the steps, I created one.

This is in a early state. If you have comments, I’d appreciate them. I’ll probably add more. (If you’d like to see more, let me know that as well.) At this point, the basics are pretty much there, so I don’t actually need to do anything else. However, I have taken this just a bit further: This is the top-level of the tutorial

Again, comments and suggestions welcome.

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yes. I agree with you. In languages like JavaScript, Self, Smaltalk, Ruby, etc., interfaces are not really necessary. Sure you can use them, but they are more for documentation.

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