@Test
public void testNamespaceValidation_emptyPackage() throws Exception {

  ApiConfig validNamespaceEmptyPackage = configFactory.copy(config);
  validNamespaceEmptyPackage.getNamespaceConfig().setOwnerDomain("domain");
  validNamespaceEmptyPackage.getNamespaceConfig().setOwnerName("name");
  validator.validate(validNamespaceEmptyPackage);
}