Testing Wi-Fi network performance in terms of speed and bandwidth is standard practice on both corporate and home environments. 

A detailed report of speed and bandwidth analysis is necessary for the deployment of network dependent services. Also, sometimes you need to double check the speed of your network throughput while troubleshooting to make sure you have enough bandwidth to support user applications like Voice over W-Fi, Video Streaming, etc. All this requires a reliable network performance testing tool. 

Typically, people will use various internet speed tests to verify performance. Still, this is a good way to disappoint yourself and all involved. Internet speed tests are never a guarantee and always rely on not only your internet bandwidth and availability (which can vary depending on usage and load from others), but most importantly the capabilities of the server being used for the speed test.