The answer to 'how to test ceiling fan' is to perform a basic functionality test. First, make sure the power to the ceiling fan is turned off at the circuit breaker. Then, use a voltage tester to check that there is no power running to the fan. Next, pull the pull chain to turn the fan on and observe if the blades are spinning. If the fan is not spinning, check the capacitor and wiring connections. You can also test the fan's light kit, if present, by pulling the light chain. If the fan and light are not functioning, you may need to replace the motor or other internal components.
It's important to test the ceiling fan regularly, at least once a year, to ensure it is working properly and safely. If you encounter any issues with the fan that you cannot resolve, it's best to call a licensed electrician to diagnose and repair the problem.