@Test
public void evaluateShouldReturnAllPatients() throws Exception {

	Cohort cohort = Context.getService(CohortDefinitionService.class).evaluate(cd, null);
	Assert.assertTrue(cohort.contains(1));
	Assert.assertTrue(cohort.contains(2));
	Assert.assertTrue(cohort.contains(3));
	Assert.assertTrue(cohort.contains(4));
	Assert.assertTrue(cohort.contains(5));
	Assert.assertEquals(5, cohort.size());
}