I have upgraded Mac system to sierra and xcode to 8.0.My question is,Is it possible to use siri of Mac system to test xcode app on simulator?
You don't need to use Mac Sierra's SIRI feature because IOS simulator have its own SIRI activated ...
You just need to update your XCode Version :8.3.1 and above support SIRI in simulator.
Enable SIRI from Settings in Simulator Hardware--->SIRI-->DONE-Start testing