At Platogo we owe the Open Source community a lot. Our super core is a Spring based web application that runs on Apache Tomcat and communicates via BlazeDS to our Flash clients. Additionally we use lots of Open Source tools and libraries for our day to day work. As most devs of our company are already part of the Open Source community it wasn't a hard decision to start giving back tools and libraries we only used in-house so far.
We do 100% of our Java development test driven and also were able to successfully use this approach for our ActionScript projects. Luckily there are already quite a lot of great libraries available for ActionScript 3 like FlexUnit, ASMock, Hamcrest,... just to name a few.
Still there was one neat little library we missed quite a lot during ActionScript development -> make-it-easy. It's a tiny framework that makes it easy to write Test Data Builders in Java. Until today it was only available for Java, .Net and C#. So we decided to give it a try, spend a few extra hours in the office and ported it to ActionScript 3 as well.
You can download the latest version (1.0.0) from github http://github.com/ripcurlx/make-it-easy-as3.
Feedback and bug reports are more than welcome.