@Test public void testRemoveDeletedKeysTest() { // set languages that is used as reference: all keys there are the keys should not to be deleted String[] referenceLanguages = new String[] {"de", "en"}; // set the languages that should be cleaned up Set<String> targetLanguages = I18nModule.getTranslatableLanguageKeys(); // Set<String> targetLanguages = new HashSet<String>(); // targetLanguages.add("en"); tDMgr.removeDeletedKeys(false, referenceLanguages, targetLanguages); }