We have that already i.e. coding to a test. It sucks because you never seem to grasp the entirety of a program but instead just hack until every flag is green.

We have that already i.e. coding to a test. It sucks because you never seem to grasp the entirety of a program but instead just hack until every flag is green. It doesn't prevent entropy either. Only thing that prevents code entropy is careful and deliberate application of best practices when needed i.e. a shit ton of extreme effort.