Spring Framework example source code file (MethodInvocationTests.java)

This example Spring Framework source code file (MethodInvocationTests.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

class, linkedlist, linkedlist, list, method, methodinvocationtests, object, object, reflection, reflectivemethodinvocation, reflectivemethodinvocation, testbean, testcase, throwable, throwable, util

The Spring Framework MethodInvocationTests.java source code

/*
 * Copyright 2002-2005 the original author or authors.
 * 
 * Licensed 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.springframework.aop.framework;

import java.lang.reflect.Method;
import java.util.LinkedList;
import java.util.List;

import junit.framework.TestCase;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;

import org.springframework.beans.TestBean;

/**
 * TODO: could refactor to be generic.
 * @author Rod Johnson
 * @since 14.03.2003
 */
public class MethodInvocationTests extends TestCase {
	
	/*
	public static MethodInvocation testInvocation(Object o, String methodName, Class[] args, Interceptor[] interceptors) throws Exception {
		Method m = o.getClass().getMethod(methodName, args);
		MethodInvocationImpl invocation = new MethodInvocationImpl(null, null, m.getDeclaringClass(), 
	m, null, interceptors, // list
	new Attrib4jAttributeRegistry());
	return invocation;
	}*/

	/*
	public void testNullInterceptor() throws Exception {
		Method m = Object.class.getMethod("hashCode", null);
		Object proxy = new Object();
		try {
				MethodInvocationImpl invocation = new MethodInvocationImpl(proxy, null, m.getDeclaringClass(), //?
		m, null, null // could customize here
	);
			fail("Shouldn't be able to create methodInvocationImpl with null interceptors");
		} catch (AopConfigException ex) {
		}
	}

	public void testEmptyInterceptorList() throws Exception {
		Method m = Object.class.getMethod("hashCode", null);
		Object proxy = new Object();
		try {
				MethodInvocationImpl invocation = new MethodInvocationImpl(proxy, null, m.getDeclaringClass(), //?
		m, null, new LinkedList() // list
	);
			fail("Shouldn't be able to create methodInvocationImpl with no interceptors");
		} catch (AopConfigException ex) {
		}
	}
	*/

	public void testValidInvocation() throws Throwable {
		Method m = Object.class.getMethod("hashCode", (Class[]) null);
		Object proxy = new Object();
		final Object returnValue = new Object();
		List is = new LinkedList();
		is.add(new MethodInterceptor() {
			public Object invoke(MethodInvocation invocation) throws Throwable {
				return returnValue;
			}
		});
			ReflectiveMethodInvocation invocation = new ReflectiveMethodInvocation(proxy, null, //?
		m, null, null, is // list
	);
		Object rv = invocation.proceed();
		assertTrue("correct response", rv == returnValue);
	}
	
	/**
	 * ToString on target can cause failure.
	 */
	public void testToStringDoesntHitTarget() throws Throwable {
		Object target = new TestBean() {
			public String toString() {
				throw new UnsupportedOperationException("toString");
			}
		};
		final Object returnValue = new Object();
		List is = new LinkedList();

		Method m = Object.class.getMethod("hashCode", (Class[]) null);
		Object proxy = new Object();
		ReflectiveMethodInvocation invocation =
		    new ReflectiveMethodInvocation(proxy, target, m, null, null, is);

		// If it hits target, the test will fail with the UnsupportedOpException
		// in the inner class above.
		invocation.toString();
	}

}