I am currently working on google assistant implementation with our existing media player application, I am able to perform search action by following command line on Android emulator,
adb shell am start -a "android.search.action.GLOBAL_SEARCH" --es query \"SEARCH STRING\"
Ref link: https://android-developers.googleblog.com/2017/10/video-playback-with-google-assistant-on.html
But, I want to check playback controls in Android TV emulator via command-line, and I am not sure how to make it. Reference image,