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    package org.apache.camel.test.junit4;
018    
019    import org.apache.camel.Exchange;
020    import org.apache.camel.Message;
021    import org.apache.camel.impl.DefaultExchange;
022    import org.junit.Before;
023    
024    /**
025     * A base class for a test which requires a {@link org.apache.camel.CamelContext} and
026     * a populated {@link Exchange}
027     *
028     * @version 
029     */
030    public abstract class ExchangeTestSupport extends CamelTestSupport {
031        protected Exchange exchange;
032    
033        /**
034         * A factory method to create an Exchange implementation
035         */
036        protected Exchange createExchange() {
037            return new DefaultExchange(context);
038        }
039    
040        /**
041         * A strategy method to populate an exchange with some example values for use
042         * by language plugins
043         */
044        protected void populateExchange(Exchange exchange) {
045            Message in = exchange.getIn();
046            in.setHeader("foo", "abc");
047            in.setHeader("bar", 123);
048            in.setBody("<hello id='m123'>world!</hello>");
049        }
050    
051        @Override
052        @Before
053        public void setUp() throws Exception {
054            super.setUp();
055            exchange = createExchange();
056            assertNotNull("No exchange created!", exchange);
057            populateExchange(exchange);
058        }
059    }