Great stuff. Refactoring in my codebase is quite painful because earlier owners went in almost the opposite direction. The unit tests pretty much are never the

Great stuff. Refactoring in my codebase is quite painful because earlier owners went in almost the opposite direction. The unit tests pretty much are never the ones that catch our bugs -- it's all caught by random or end to end tests. I'm slowly trying to crawl toward the light with respect to reorganizing tests I come across to use the external API.