components/camel-gson/src/test/java/org/apache/camel/component/gson/GsonMarshalListTest.java

/*
 * 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
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package org.apache.camel.component.gson;

import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;

import com.google.gson.reflect.TypeToken;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.test.junit4.CamelTestSupport;
import org.junit.Test;

public class GsonMarshalListTest extends CamelTestSupport {



    @Test
    public void testMarshalAndUnmarshalPojo() throws Exception {
        
        List<TestPojo> inList = new ArrayList<>();
        
        TestPojo in1 = new TestPojo();
        in1.setName("Camel1");
        
        TestPojo in2 = new TestPojo();
        in2.setName("Camel2");
        
        inList.add(in1);
        inList.add(in2);

        MockEndpoint mock = getMockEndpoint("mock:reversePojo");
        mock.expectedMessageCount(1);
        mock.message(0).body().isInstanceOf(List.class);
        mock.message(0).body().isEqualTo(inList);

        String marshalled = template.requestBody("direct:inPojo", inList, String.class);
        assertEquals("[{\"name\":\"Camel1\"},{\"name\":\"Camel2\"}]", marshalled);

        template.sendBody("direct:backPojo", marshalled);

        mock.assertIsSatisfied();
    }

    @Override
    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                
                GsonDataFormat formatPojo = new GsonDataFormat();
                Type genericType = new TypeToken<List<TestPojo>>() { }.getType();
                formatPojo.setUnmarshalGenericType(genericType);

                from("direct:inPojo").marshal(formatPojo);
                from("direct:backPojo").unmarshal(formatPojo).to("mock:reversePojo");
            }
        };
    }

}