components/camel-jackson/src/test/java/org/apache/camel/component/jackson/JacksonObjectMapperRegistryTest.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
 * limitations under the License.
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package org.apache.camel.component.jackson;

import java.util.HashMap;
import java.util.Map;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.apache.camel.BindToRegistry;
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 JacksonObjectMapperRegistryTest extends CamelTestSupport {

    private JacksonDataFormat df;

    @BindToRegistry("myMapper")
    private ObjectMapper objectMapper = new ObjectMapper();

    @Test
    public void testMarshalAndUnmarshalMap() throws Exception {
        Map<String, Object> in = new HashMap<>();
        in.put("name", "Camel");

        MockEndpoint mock = getMockEndpoint("mock:reverse");
        mock.expectedMessageCount(1);
        mock.message(0).body().isInstanceOf(Map.class);
        mock.message(0).body().isEqualTo(in);

        Object marshalled = template.requestBody("direct:in", in);
        String marshalledAsString = context.getTypeConverter().convertTo(String.class, marshalled);
        assertEquals("{\"name\":\"Camel\"}", marshalledAsString);

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

        mock.assertIsSatisfied();

        assertSame(objectMapper, df.getObjectMapper());
    }

    @Override
    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                df = new JacksonDataFormat();
                df.setAutoDiscoverObjectMapper(true);

                from("direct:in").marshal(df);
                from("direct:back").unmarshal(df).to("mock:reverse");
            }
        };
    }

}