A click test 10 seconds is like any other normal click per second test that helps you know your number of clicks per second as well as the total number of clicks in that session of 10 seconds. As we know the full form of CPS is clicks per second and in the 10 seconds time frame, you get more than enough time to test your clicking that too with various styles of clicking!
You can practice and try out several styles and techniques of clicking like jitter tapping and butterfly clicking along with several others. As the 10 second time limit is not too short to randomly click away without any thought and not too long for a 30 second or 1 minute strategy for getting a higher number of clicks per second, it is perfect. That being said, you will definitely need to make a plan as to how to spend those 10 seconds on the mouse wisely utilizing every microsecond, every pause of your finger, and making every click count.