@Test
public void evaluateShouldReturnAllPatientsWhoStartedTakingDrugsAfterSpecifiedDate() throws Exception {

	cohortDefinition.setActivatedOnOrAfter(DateUtil.getDateTime(2008, 8, 10));
	Cohort cohort = Context.getService(CohortDefinitionService.class).evaluate(cohortDefinition, null);
	Assert.assertTrue(cohort.contains(2));
	Assert.assertTrue(cohort.contains(7));
	Assert.assertEquals(2, cohort.size());
}