- Robo test will be used, which is a testing tool that is integrated with Firebase Test Lab for the structure of your app's UI. - Firebase Test Lab is a cloud-based app testing infrastructure that lets you test your app on a range of devices and configurations, so you can get a better idea of how it'll perform in the hands of live users. - Test Lab uses real, production devices running in a Google data center to test your app. The devices are flashed with updated APIs and have customizable locale settings, allowing you to road-test your app on the hardware and configurations it'll encounter in real-world use.