> Over the time, the prototype has grown to be a serious app This is your problem, not the lack of tests. When you use Ruby or Apache Groovy to prototype somet

> Over the time, the prototype has grown to be a serious app This is your problem, not the lack of tests. When you use Ruby or Apache Groovy to prototype something, it needs rewriting in a statically typed language as soon as it starts growing into something you want to be production quality. Groovy's good for glue code, build scripts, and tests. Don't build actual systems in it.