Steve Freeman

I don’t normally do this sort of thing, but this took my colleague Tony Lawrence and me a while to figure out and we didn’t find a good explanation on the web. This will be a very dull posting unless you need to fix this particular problem. Sorry about that.

We happen to be using the [...]

This popped up on a technical discussion site recently. The original question was how to write tests for code that invokes a method on particular values in a list. The problem was that the tests were messy, and the author was looking for a cleaner alternative. Here’s the example test, it asserts that the even-positioned [...]

InfoQ has just published Udi Dahan’s talk from QCon 2008 on “Intentions and Interfaces”. It’s good to see the message about focussing on Roles rather than Classes being pitched to a new audience. That’s what we were trying to talk about in our “Mock Roles, Not Objects” paper.

I wonder, however, about his style for naming [...]

I’ve come across what might be a synchronisation bug while working on the book.

The end-to-end tests for our example application use the WindowLicker framework to drive the Swing user interface. Our test infrastructure starts the application up in another thread (it’s as close as we can get to running from the command line), then [...]

At the recent Software Craftsmanship conference in London, Willem and Marc ran a session on Responsibility-Driven Development with Mocks for about 30 people. Nat Pryce and I were sitting at the back watching and occasionally heckling.

The first striking thing was that when Willem and Marc asked who was using “Mock Objects” most everyone put [...]

Excellent series of images from Derick Bailey. Here’s an example:

Single Responsibility Principle
Just because you can, doesn’t mean you should.

RT @Jtf

I was chatting with Keith about what the Software Craftsmanship event should really be about, in the context of a discussion of whether some of Jason Gorman’s list of guitar heroes are actually worth listening to (you still with me?) 1.

The next obscure piece of evidence is Maurice Murphy’s YouTube masterclass. For those who don’t [...]

There’s a common pattern where an object is constructed with a Context object that carries all the dependencies the new object might need. It’s often used, for example, with classes that package up domain behaviour based on lower-level services, something like this:

public class PriceReconciler {
private final Context context;

public PriceReconciler(Context context) {
[...]