Unit testing is a leading indicator. The higher the coverage the better the quality of the product is a good broad rule. Engineers hate unit testing to 100% unt

Unit testing is a leading indicator. The higher the coverage the better the quality of the product is a good broad rule. Engineers hate unit testing to 100% until they do, and then they don't go back, it becomes the norm for their development process. The confidence and assurance you get from that level of coverage is amazing. It takes the stress out of software.