Creating a branch for experimenting with some ideas for JMS client.rajith_jms_client

git-svn-id: https://svn.apache.org/repos/asf/qpid/branches/rajith_jms_client@1128369 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 97 insertions, 0 deletions

diff --git a/qpid/java/broker/src/test/java/org/apache/qpid/server/queue/QueueEntryTest.java b/qpid/java/broker/src/test/java/org/apache/qpid/server/queue/QueueEntryTest.java
new file mode 100644
index 0000000000..b67723dd25
--- /dev/null
+++ b/qpid/java/broker/src/test/java/org/apache/qpid/server/queue/QueueEntryTest.java
@@ -0,0 +1,97 @@
+/*
+ *
+ * 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.qpid.server.queue;
+
+import org.apache.qpid.test.utils.QpidTestCase;
+
+/**
+ *
+ * Tests QueueEntry
+ *
+ */
+public class QueueEntryTest extends QpidTestCase
+{
+    private QueueEntryImpl _queueEntry1 = null;
+    private QueueEntryImpl _queueEntry2 = null;
+    private QueueEntryImpl _queueEntry3 = null;
+
+    @Override
+    protected void setUp() throws Exception
+    {
+        super.setUp();
+
+        int i = 0;
+
+        SimpleQueueEntryList queueEntryList = new SimpleQueueEntryList(null);
+        _queueEntry1 = (QueueEntryImpl) queueEntryList.add(new MockAMQMessage(i++));
+        _queueEntry2 = (QueueEntryImpl) queueEntryList.add(new MockAMQMessage(i++));
+        _queueEntry3 = (QueueEntryImpl) queueEntryList.add(new MockAMQMessage(i++));
+    }
+
+    public void testCompareTo()
+    {
+        assertTrue(_queueEntry1.compareTo(_queueEntry2) < 0);
+        assertTrue(_queueEntry2.compareTo(_queueEntry1) > 0);
+        assertTrue(_queueEntry1.compareTo(_queueEntry1) == 0);
+    }
+
+    /**
+     * Tests that the getNext() can be used to traverse the list.
+     */
+    public void testTraverseWithNoDeletedEntries()
+    {
+        QueueEntryImpl current = _queueEntry1;
+
+        current = current.getNext();
+        assertSame("Unexpected current entry",_queueEntry2, current);
+
+        current = current.getNext();
+        assertSame("Unexpected current entry",_queueEntry3, current);
+
+        current = current.getNext();
+        assertNull(current);
+
+    }
+
+    /**
+     * Tests that the getNext() can be used to traverse the list but deleted
+     * entries are skipped and de-linked from the chain of entries.
+     */
+    public void testTraverseWithDeletedEntries()
+    {
+        // Delete 2nd queue entry
+        _queueEntry2.delete();
+        assertTrue(_queueEntry2.isDeleted());
+
+
+        QueueEntryImpl current = _queueEntry1;
+
+        current = current.getNext();
+        assertSame("Unexpected current entry",_queueEntry3, current);
+
+        current = current.getNext();
+        assertNull(current);
+
+        // Assert the side effects of getNext()
+        assertSame("Next node of entry 1 should now be entry 3",
+                _queueEntry3, _queueEntry1.nextNode());
+    }
+}