{
final PrettyConfigBuilder builder = new PrettyConfigBuilder();
new DigesterPrettyConfigParser().parse(builder,
getClass().getClassLoader().getResourceAsStream("parenting-pretty-config.xml"));
PrettyConfig config = builder.build();
assertEquals("", config.getMappingById("parent").getParentId());
assertEquals("parent", config.getMappingById("child").getParentId());
assertEquals("child", config.getMappingById("grandchild").getParentId());
assertEquals("parent", config.getMappingById("child2").getParentId());