我為我的 android 應用程序編寫測試，我需要從我的類中模擬一個方法，該方法在我測試的方法中調用。這是我的課：public class MyFirebaseMessagingService extends FirebaseMessagingService {..... @Overridepublic void onMessageReceived(RemoteMessage remoteMessage) {            if (!isAppOnForeground(this)) {                DoSomeThing();            }        }    }public boolean isAppOnForeground(Context context) {       return isAppOnForeground;    }}我想在返回真假onMessageReceived時測試方法。isAppOnForeground我試試@Testpublic void onMessageReceived() {MyFirebaseMessagingService mockMyFirebaseMessagingService = org.mockito.Mockito.mock(MyFirebaseMessagingService.class);when(mockMyFirebaseMessagingService.isAppOnForeground(any(Context.class))).thenReturn(false);mockMyFirebaseMessagingService.onMessageReceived(remoteMessage);...}但是當我運行這個測試時，我沒有看到方法調用onMessageReceived（斷點不起作用）。我怎樣才能嘲笑isAppOnForeground和打電話onMessageReceived？