Check if a dialog is displayed with Espresso

Question

I\'m trying to write some tests with the new android-test-kit (Espresso). But I can\'t find any information on how to check if a dialog is displayed and per

Answer 1

Just in case anyone stumbles across this question like I did. All the answers will only work for dialogs WITH dialog buttons. Do not try and use this for progress dialogs without user interaction. Espresso keeps waiting for the app to enter an idle state. As long as the progress dialog is visible the app is not idle.