QPID-1434 : Add ability to rethrow AMQExceptions

git-svn-id: https://svn.apache.org/repos/asf/incubator/qpid/trunk/qpid@711820 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 128 insertions, 0 deletions

diff --git a/java/common/src/test/java/org/apache/qpid/AMQExceptionTest.java b/java/common/src/test/java/org/apache/qpid/AMQExceptionTest.java
new file mode 100644
index 0000000000..853dc85592
--- /dev/null
+++ b/java/common/src/test/java/org/apache/qpid/AMQExceptionTest.java
@@ -0,0 +1,128 @@
+/*
+ *
+ * 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;
+
+import junit.framework.TestCase;
+import org.apache.qpid.protocol.AMQConstant;
+import org.apache.qpid.framing.AMQFrameDecodingException;
+
+/**
+ * This test is to ensure that when an AMQException is rethrown that the specified exception is correctly wrapped up.
+ *
+ * There are three cases:
+ * Re-throwing an AMQException
+ * Re-throwing a Subclass of AMQException
+ * Re-throwing a Subclass of AMQException that does not have the default AMQException constructor which will force the
+ * creation of an AMQException.
+ */
+public class AMQExceptionTest extends TestCase
+{
+    /**
+     * Test that an AMQException will be correctly created and rethrown.
+     */
+    public void testRethrowGeneric()
+    {
+        AMQException test = new AMQException(AMQConstant.ACCESS_REFUSED, "refused", new RuntimeException());
+
+        try
+        {
+            reThrowException(test);
+        }
+        catch (AMQException e)
+        {
+            assertEquals("Exception not of correct class", AMQException.class, e.getClass());
+        }
+    }
+
+    /**
+     * Test that a subclass of AMQException that has the default constructor will be correctly created and rethrown.
+     */
+    public void testRethrowAMQESubclass()
+    {
+        AMQFrameDecodingException test = new AMQFrameDecodingException(AMQConstant.INTERNAL_ERROR,
+                                                                       "Error",
+                                                                       new Exception());
+        try
+        {
+            reThrowException(test);
+        }
+        catch (AMQException e)
+        {
+            assertEquals("Exception not of correct class", AMQFrameDecodingException.class, e.getClass());
+        }
+    }
+
+    /**
+     * Test that a subclass of AMQException that doesnot have the  default constructor will be correctly rethrown as an
+     * AMQException
+     */
+    public void testRethrowAMQESubclassNoConstructor()
+    {
+        AMQExceptionSubclass test = new AMQExceptionSubclass("Invalid Argument Exception");
+        try
+        {
+            reThrowException(test);
+        }
+        catch (AMQException e)
+        {
+            assertEquals("Exception not of correct class", AMQException.class, e.getClass());
+        }
+    }
+
+    /**
+     * Private method to rethrown and validate the basic values of the rethrown
+     * @param test Exception to rethrow
+     * @throws AMQException the rethrown exception
+     */
+    private void reThrowException(AMQException test) throws AMQException
+    {
+        try
+        {
+            test.rethrow();
+        }
+        catch (AMQException amqe)
+        {
+            assertEquals("Error code does not match.", test.getErrorCode(), amqe.getErrorCode());
+            assertTrue("Exception message does not start as expected.", amqe.getMessage().startsWith(test.getMessage()));
+            assertEquals("Test Exception is not set as the cause", test, amqe.getCause());
+            assertEquals("Cause is not correct", test.getCause(), amqe.getCause().getCause());
+            throw amqe;
+        }
+        catch (Throwable e)
+        {
+            fail("Throwable recieved when AMQException expected:" + e);
+        }
+
+    }
+
+    /**
+     * Private class that extends AMQException but does not have a default exception.
+     */
+    private class AMQExceptionSubclass extends AMQException
+    {
+
+        public AMQExceptionSubclass(String msg)
+        {
+            super(null, msg, null);
+        }
+    }
+}
+