Android Test if toast is shown

Question

I am writing a test to check if a custom Toast is being shown. The Toast is not being constructed and shown in an Activity instance. I have a created a class that has access to the Context .

public class ToastHandler{
    private Context context;
    public ToastHander(Context context){
       this.context = context;
    }

   public createToast(DataStructure data){
      // Create and show Custom Toast using data and context
   }
}

How should I go about testing this? I am using Espresso.

Answer 1

What about

onView(withText(R.string.toast_text)).inRoot(withDecorView(not(mActivityRule.getActivity().getWindow().getDecorView()))).check(matches(isDisplayed()));

?

If there is such need you can create matcher like this

http://baroqueworksdev.blogspot.de/2015/03/how-to-check-toast-window-on-android.html