Logout from Facebook in Android Espresso UI Test

I have some automated tests using the Facebook SDK: - Sign Up in my app - Sign In in my app

I run the Sign Up test, it basically call chrome, and login in Facebook to continue the Sign Up process in my app using the infos.

But when I want to run a second test on the emulator, Sign In, I am already logged in Facebook on Chrome and I would like to use another account for this test...

Is there a way to be logged out in my tests ?