How to rotate activity, I mean: screen orientation change using Espresso?

Question

I have decided that one of the testing criteria for my application tests with Google\'s Espresso is:

Test should maintain Activity state after s

Answer 1

You can do it with uiautomator library

dependencies {
  androidTestImplementation 'androidx.test.uiautomator:uiautomator:2.2.0' 
}

ui automator require min sdk version 18 so if your app has a lower min sdk you need to create a new AndroidManifest.xml in androidTest folder

and then in your test

UiDevice device = UiDevice.getInstance(getInstrumentation());

device.setOrientationLeft();
device.setOrientationNatural();
device.setOrientationRight();