001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package org.apache.commons.proxy2.interceptor;
019
020import static org.junit.Assert.assertEquals;
021import static org.junit.Assert.assertNotNull;
022
023import java.lang.reflect.Method;
024
025import org.apache.commons.proxy2.Invocation;
026import org.apache.commons.proxy2.Invoker;
027import org.apache.commons.proxy2.util.AbstractTestCase;
028import org.apache.commons.proxy2.util.Echo;
029import org.junit.Test;
030
031public class InvokerInterceptorTest extends AbstractTestCase
032{
033    // ----------------------------------------------------------------------------------------------------------------------
034    // Other Methods
035    // ----------------------------------------------------------------------------------------------------------------------
036
037    @Test
038    public void testIntercept() throws Throwable
039    {
040        final InvokerInterceptor interceptor = new InvokerInterceptor(new Invoker()
041        {
042            private static final long serialVersionUID = 1L;
043
044            @Override
045            public Object invoke(Object proxy, Method method, Object[] arguments) throws Throwable
046            {
047                return "Hello!";
048            }
049        });
050        final Invocation invocation = new MockInvocationBuilder(Echo.class.getDeclaredMethod("echoBack", String.class))
051                .withArguments("foo").build();
052
053        assertEquals("Hello!", interceptor.intercept(invocation));
054    }
055
056    @Test(expected = NullPointerException.class)
057    public void testWithNullInvoker()
058    {
059        assertNotNull(new InvokerInterceptor(null)); // assert is used to avoid not used warning
060    }
061}