@Test
public void testGetTitleMapIfCPAttachmentFileEntryIsNull()
	throws Exception {

	Map<Locale, String> titleMap = AttachmentUtil.getTitleMap(
		null, _titleMap);
	Assert.assertEquals(
		"Title map size", _titleMap.size(), titleMap.size());
	titleMap.forEach(
		(key, value) -> Assert.assertTrue(
			"title map contains " + key.toString(),
			_titleMap.containsKey(key.toString())));
}