Since last year, Google is working on a Chrome OS Emulator for Android Studio. Now finally, the emulator is available for download. This emulator will allow the developers to develop and test their apps on a Chrome OS device such as a Google Pixelbook, without a need of having the physical hardware.
The emulator is in the initial stage and you can check out the official help page for more information on the Chrome OS emulator. Below is the disclaimer message posted by Android Developers on the help page.
Android Developers can now go ahead and can start downloading the emulator to test the apps on Chrome OS.