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/*
*
* 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.client.util;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.ObjectOutputStream;
import java.util.Arrays;
import java.util.List;
import org.apache.qpid.test.utils.QpidTestCase;
public class ClassLoadingAwareObjectInputStreamTest extends QpidTestCase
{
InputStream _in;
ClassLoadingAwareObjectInputStream _claOIS;
protected void setUp() throws Exception
{
//Create a viable input stream for instantiating the CLA OIS
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(baos);
out.writeObject("testString");
out.flush();
out.close();
_in = new ByteArrayInputStream(baos.toByteArray());
_claOIS = new ClassLoadingAwareObjectInputStream(_in);
}
/**
* Test that the resolveProxyClass method returns a proxy class implementing the desired interface
*/
public void testResolveProxyClass() throws Exception
{
//try to proxy an interface
Class<?> clazz = _claOIS.resolveProxyClass(new String[]{"java.lang.CharSequence"});
//verify the proxy supports the expected interface (only)
List<Class<?>> interfaces = Arrays.asList(clazz.getInterfaces());
assertTrue("Unexpected interfaces supported by proxy", interfaces.contains(CharSequence.class));
assertEquals("Unexpected interfaces supported by proxy", 1, interfaces.size());
}
/**
* Test that the resolveProxyClass method throws a ClassNotFoundException wrapping an
* IllegalArgumentException if it is provided arguments which violate the restrictions allowed
* by Proxy.getProxyClass (as required by the ObjectInputStream.resolveProxyClass javadoc).
*/
public void testResolveProxyClassThrowsCNFEWrappingIAE() throws Exception
{
try
{
//try to proxy a *class* rather than an interface, which is illegal
_claOIS.resolveProxyClass(new String[]{"java.lang.String"});
fail("should have thrown an exception");
}
catch(ClassNotFoundException cnfe)
{
//expected, but must verify it is wrapping an IllegalArgumentException
assertTrue(cnfe.getCause() instanceof IllegalArgumentException);
}
}
}
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