/** Tests if entries in DEQUQUED or DELETED state are not returned by getNext method. */
public void testGetNext() {
int numberOfEntries = 5;
QueueEntryImpl[] entries = new QueueEntryImpl[numberOfEntries];
SimpleQueueEntryList queueEntryList = new SimpleQueueEntryList(new MockAMQQueue("test"));
// create test entries
for (int i = 0; i < numberOfEntries; i++) {
AMQMessage message = null;
;
try {
message = new MockAMQMessage(i);
} catch (AMQException e) {
fail("Failure to create a mock message:" + e.getMessage());
}
QueueEntryImpl entry = (QueueEntryImpl) queueEntryList.add(message);
entries[i] = entry;
}
// test getNext for not acquired entries
for (int i = 0; i < numberOfEntries; i++) {
QueueEntryImpl queueEntry = entries[i];
QueueEntryImpl next = queueEntry.getNext();
if (i < numberOfEntries - 1) {
assertEquals("Unexpected entry from QueueEntryImpl#getNext()", entries[i + 1], next);
} else {
assertNull("The next entry after the last should be null", next);
}
}
// delete second
entries[1].acquire();
entries[1].delete();
// dequeue third
entries[2].acquire();
entries[2].dequeue();
QueueEntryImpl next = entries[0].getNext();
assertEquals("expected forth entry", entries[3], next);
next = next.getNext();
assertEquals("expected fifth entry", entries[4], next);
next = next.getNext();
assertNull("The next entry after the last should be null", next);
}