With Groovy comes great power of DSL(Domain Specific Language)

Slowly and steadily I have started realizing the power of DSL(Domain Specific Langauge) and I found Groovy a very powerful tool to write DSL. DSL takes programming to next level by allowing  input to a program be given as set of actions than merely a function call.If you want to explore DSL in detail, I would recommend you to read Martin Fowler's book on DSL.

Groovy/Grails : Integration tests for multi-threaded application

Recently I came across a situation in my project, where I had to write integration test for multi-threaded code. Basically I had a business method in service class which executed some portion of it's work in separate thread. Now in order to write integration test for such method, test method should ideally wait for the thread(s) created by service class to complete before asserting result. But there was no way I could figure out if the threads created by service class has completed. So then I thought to refactor my code in a way that I can figure from outside if the threads have got completed or not.