Aikido only has the testing aspect. Because of this, tests are much more important in Aikido. Not only are they more important, they are an essential part of learning Aikido. Some students say that they are not interested in testing. However, we should view examinations as a yardstick of progress.
Tests require focus on various techniques and aspects of the art.
They provide structure to learning. An interesting curiosity of Aikido tests is that once you begin to focus on the next level, you are forced to apply an understanding of your current level. I would encourage everyone who is currently avoiding taking a test to rethink that strategy. The rewards are great. Aikido tests are not only important for the individual student testing, but also for everyone else involved.