@Test
public void evaluateShouldReturnAllPatientsTakingSpecifiedDrugBeforeDate() throws Exception {

	List drugSetList = new ArrayList<Concept>();
	drugSetList.add(new Concept(88));
	cohortDefinition.setDrugSets(drugSetList);
	cohortDefinition.setActivatedOnOrBefore(DateUtil.getDateTime(2008, 8, 2));
	Cohort cohort = Context.getService(CohortDefinitionService.class).evaluate(cohortDefinition, null);
	Assert.assertTrue(cohort.contains(2));
}