add test for ack shuffling before rollback

Author: Alexandru Scvortov

test/src/com/rabbitmq/client/test/functional/Transactions.java

@@ -343,4 +343,34 @@ public void testCommitWithDeletedQueue()
         }
     }
 
+    public void testShuffleAcksBeforeRollback()
+        throws IOException
+    {
+        openChannel();
+        try {
+            createResources();
+            for (int i = 0; i < 3; i++) {
+                basicPublish();
+            }
+            txSelect();
+            long tags[] = new long[3];
+            for (int i = 0; i < 3; i++) {
+                tags[i] = basicGet().getEnvelope().getDeliveryTag();
+            }
+            basicAck(tags[2], false);
+            basicAck(tags[1], false);
+            txRollback();
+            basicAck(tags[0], true);
+            basicAck(tags[1], false);
+            basicAck(tags[2], false);
+            txCommit();
+        } catch (IOException e) {
+            closeConnection();
+            openConnection();
+            openChannel();
+            throw e;
+        } finally {
+            closeChannel();
+        }
+    }
 }