List<Alert> result = alertManager.findAlertsByCriteria(testData.getSubject(), c);
assertEquals(1, result.size());
// fail to find any acked alert
c.addFilterUnacknowledgedOnly(Boolean.FALSE);
c.addFilterAcknowledgingSubject(""); // should match anything acknowledged
result = alertManager.findAlertsByCriteria(testData.getSubject(), c);
assertTrue(result.isEmpty());
// ack the alert
long testStartTimeStamp = System.currentTimeMillis();