@Test
public void testFallbackResultUnset() {

  rule.setFallbackResult(null);
  List<MappingRule> rules = ruleCreator.getMappingRules(description);
  MappingRule mpr = rules.get(0);
  assertEquals("Fallback result", MappingRuleResultType.SKIP,
      mpr.getFallback().getResult());
}