@Test
	public void newInstance_shouldCopyMostFields() throws Exception {
		Obs obs = new Obs();
		obs.setStatus(Obs.Status.PRELIMINARY);
		obs.setInterpretation(Obs.Interpretation.LOW);
		obs.setConcept(new Concept());
		obs.setValueNumeric(1.2);

		Obs copy = Obs.newInstance(obs);

		// these fields are not copied
		assertThat(copy.getObsId(), nullValue());
		assertThat(copy.getUuid(), not(obs.getUuid()));

		// other fields are copied
		assertThat(copy.getConcept(), is(obs.getConcept()));
		assertThat(copy.getValueNumeric(), is(obs.getValueNumeric()));
		assertThat(copy.getStatus(), is(obs.getStatus()));
		assertThat(copy.getInterpretation(), is(obs.getInterpretation()));
		// TODO test that the rest of the fields are set
	}