Many organizations provide the first step very efficiently i.e. teaching and ignores the testing part due to many reasons like feasibility, huge investment required, methodological incompetency to map the informal form of learning, etc.
Testing is a very vital element of teaching as it helps measuring the gap between the things taught and things learned and helps to take corrective measures to improve. It also helps in motivating and encouraging positive competition within team to learn more and strive to outdo one another.