Here is a link to an article that discusses one possible way to test private functions: http://philipwalton.com/articles/how-to-unit-test-private-functions-in-j

Here is a link to an article that discusses one possible way to test private functions: http://philipwalton.com/articles/how-to-unit-test-private-functions-in-javascript/ http://philipwalton.com/articles/how-to-unit-test-private-fu... He basically exposes them while in a dev environment, and then uses a build tool to make them actually private. I agree with weego's comment though, its something that isn't usually worth the tradeoffs, as long as your team has discipline.