Clean architecture: https://smile.amazon.com/Clean-Architecture-Craftsmans-Software-Structure/dp/0134494164 https://smile.amazon.com/Clean-Architecture-Craftsma

Clean architecture: https://smile.amazon.com/Clean-Architecture-Craftsmans-Software-Structure/dp/0134494164 https://smile.amazon.com/Clean-Architecture-Craftsmans-Softw... Anything that touches the real world should be as small as possible. I've been writing code using tests for about 4+ years and I now can't think of writing code any other way. I would be scared of refactoring. Also I'm testing the code anyway - why not write it down so it gets done every time? Run integration tests too for sanity - they're testing the integration of things. To me: coding without tests is like going caving without a flash light. You don't really know what your code does until you run tests. Your confidence rises when more code is covered. No it isn't perfect - but not writing tests is not better.