https://issues.apache.org/jira/browse/AMQ-4472 - test case that shows the problem with prefetched messages and delayed close till commit

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1470459 13f79535-47bb-0310-9956-ffa450edef68

activemq-unit-tests/src/test/java/org/apache/activemq/bugs/AMQ4472Test.java

@@ -0,0 +1,91 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.activemq.bugs;
+
+import javax.jms.Connection;
+import javax.jms.Destination;
+import javax.jms.JMSException;
+import javax.jms.Message;
+import javax.jms.MessageConsumer;
+import javax.jms.MessageProducer;
+import javax.jms.Session;
+import javax.jms.TextMessage;
+import org.apache.activemq.ActiveMQConnectionFactory;
+import org.junit.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+public class AMQ4472Test {
+    private static final Logger LOG = LoggerFactory.getLogger(AMQ4472Test.class);
+
+    @Test
+    public void testLostMessage() {
+        Connection connection = null;
+        try {
+            ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory("vm://localhost?broker.useJmx=false&jms.prefetchPolicy.all=0");
+            connection = connectionFactory.createConnection();
+            connection.start();
+
+            Session session = connection.createSession(true, Session.SESSION_TRANSACTED);
+            Destination test_data_destination = session.createQueue("test"+System.currentTimeMillis());
+
+            MessageConsumer consumer = session.createConsumer(test_data_destination);
+            LOG.info("Consumer 1 connected");
+
+            MessageProducer producer = session.createProducer(test_data_destination);
+            producer.send(session.createTextMessage("Message 1"));
+
+            // committing the session prior to the close
+            session.commit();
+
+            // starting a new transaction
+            producer.send(session.createTextMessage("Message 2"));
+
+            // in a new transaction, with prefetch>0, the message
+            // 1 will be pending till second commit
+            LOG.info("Closing consumer 1...");
+            consumer.close();
+
+            // create a consumer
+            consumer = session.createConsumer(test_data_destination);
+            LOG.info("Consumer 2 connected");
+
+            // retrieve message previously committed to tmp queue
+            Message message = consumer.receive(10000);
+            if (message != null) {
+                LOG.info("Got message 1:", message);
+                assertEquals("expected message", "Message 1", ((TextMessage) message).getText());
+                session.commit();
+            } else {
+                LOG.error("Expected message but it never arrived");
+            }
+            assertNotNull(message);
+        } catch (Exception e) {
+            e.printStackTrace();
+        } finally {
+            try {
+                connection.close();
+            } catch (JMSException e) {
+            }
+        }
+    }
+
+}