@Test
public void testNewConfigurationInfoList_optional() throws Exception {
List<ConfigurationInfo<URL>> configurationInfos =
ConfigurationHelper.newList(
Lists.newArrayList(new URL("http://google.com"), new URL("https://google.com")), true);
assertEquals(2, configurationInfos.size());
assertEquals(new URL("http://google.com"), configurationInfos.get(0).getLocation());
assertTrue(configurationInfos.get(0).isOptional());
assertEquals(new URL("https://google.com"), configurationInfos.get(1).getLocation());
assertTrue(configurationInfos.get(1).isOptional());
}