IBookMark bookmark = (IBookMark) folder.getMarks().get(0);
assertEquals(100, countNews(bookmark));
/* Preferences */
IPreferenceScope prefs1 = Owl.getPreferenceService().getEntityScope(bookmark);
/* Setup Retention */
prefs1.putBoolean(DefaultPreferences.DEL_NEWS_BY_AGE_STATE, true);
prefs1.putBoolean(DefaultPreferences.DEL_NEWS_BY_COUNT_STATE, true);
prefs1.putBoolean(DefaultPreferences.DEL_READ_NEWS_STATE, true);
/* Run and Validate Retention */
prefs1.putInteger(DefaultPreferences.DEL_NEWS_BY_AGE_VALUE, 5);
prefs1.putInteger(DefaultPreferences.DEL_NEWS_BY_COUNT_VALUE, 50);
RetentionStrategy.process(bookmark);
assertEquals(10, countNews(folder));
assertEquals(10, countNews(bookmark));
}