  	@Test
  	public void evaluateShouldReturnAllPatientsThatHaveTakenAnyDrugByDefault() throws Exception {

  		List drugs = new ArrayList<Drug>();
  		drugs.add(new Drug(11));
  		drugs.add(new Drug(2));
  		cohortDefinition.setDrugs(drugs);
  		Cohort cohort = Context.getService(CohortDefinitionService.class).evaluate(cohortDefinition, null);
  		Assert.assertTrue(cohort.contains(2));
  		Assert.assertTrue(cohort.contains(8));
  		Assert.assertTrue(cohort.contains(21));
  		Assert.assertTrue(cohort.contains(22));
  		Assert.assertEquals(4, cohort.size());
  		
  	}