@Test
public void testZDataPropertynamespace() throws NoSuchFieldException, IllegalAccessException {

  // given
  String iriStr = "http://www.micello.com#hasFloor";
  IRI iri = IRI.create(iriStr);
  ZObjectProperty zojectProperty = new ZObjectProperty(iri);
  // then
  assertEquals("Fields didn't match", zojectProperty.getObjectPropertyNamespace(),
      "http://www.micello.com#");
}