In Unity we can test project in Game View tab - almost instantly, even if final target is Android device.
Is there way to run Android Studio Cocos2d-x project in similar manner ?
Linux if to be exact.
No.
I am curious how Unity can run project without running on a simulator or device.
Unity doesn’t build for Android every time you run it, only when you decide to export for Android.
It seems that libGDX have similar feature too: http://www.badlogicgames.com/forum/viewtopic.php?f=11&t=26385
That’s sad.