필요한 부분만을 읽어보고 일부 인용하였다. http://www.ipl.com/pdf/p0828.pdf 3.1. It consumes too much time In practice, properly planned unit tests consume approximately as much effort as writing the actual code. Once completed, many bugs will have been corrected and developers can proceed to a much more efficient integration, knowing that they have reliable components to begin..