tests/camel-itest-osgi/src/test/java/org/apache/camel/itest/CamelTypeConverterTest.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,
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 * See the License for the specific language governing permissions and
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package org.apache.camel.itest;

import java.io.ByteArrayInputStream;
import java.net.URL;

import org.apache.camel.CamelContext;
import org.apache.camel.itest.typeconverter.MyConverter;
import org.apache.camel.support.DefaultExchange;
import org.apache.camel.test.karaf.AbstractFeatureTest;
import org.apache.camel.test.karaf.CamelKarafTestSupport;
import org.apache.camel.util.ObjectHelper;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.ops4j.pax.exam.Configuration;
import org.ops4j.pax.exam.Option;
import org.ops4j.pax.exam.ProbeBuilder;
import org.ops4j.pax.exam.TestProbeBuilder;
import org.ops4j.pax.exam.junit.PaxExam;
import org.ops4j.pax.tinybundles.core.InnerClassStrategy;
import org.ops4j.pax.tinybundles.core.TinyBundle;
import org.osgi.framework.Constants;

@RunWith(PaxExam.class)
public class CamelTypeConverterTest extends AbstractFeatureTest {

    @Test
    public void testTypeConverterInSameBundleAsCamelRoute() throws Exception {
        // install the camel blueprint xml file and the Camel converter we use in this test
        URL blueprintUrl = ObjectHelper.loadResourceAsURL("org/apache/camel/itest/CamelTypeConverterTest.xml", CamelTypeConverterTest.class.getClassLoader());
        installBlueprintAsBundle("CamelTypeConverterTest", blueprintUrl, true, bundle -> {
            // install converter
            ((TinyBundle) bundle)
                .add("META-INF/services/org/apache/camel/TypeConverter", new ByteArrayInputStream("org.apache.camel.itest.typeconverter.MyConverter".getBytes()))
                .add(MyConverter.class, InnerClassStrategy.NONE)
                .set(Constants.DYNAMICIMPORT_PACKAGE, "*");
        });

        // lookup Camel from OSGi
        CamelContext camel = getOsgiService(bundleContext, CamelContext.class);

        final Pojo pojo = new Pojo();
        String pojoName = "Constantine";
        pojo.setName(pojoName);

        final DefaultExchange exchange = new DefaultExchange(camel);
        final String string = camel.getTypeConverter().mandatoryConvertTo(String.class, exchange, pojo);
        LOG.info("POJO -> String: {}", string);
        final Pojo copy = camel.getTypeConverter().mandatoryConvertTo(Pojo.class, exchange, string);
        LOG.info("String -> POJO: {}", copy);
        Assert.assertEquals(pojoName, copy.getName());
    }

    @Configuration
    public Option[] configure() {
        return CamelKarafTestSupport.configure("camel-test-karaf");
    }

    @ProbeBuilder
    public TestProbeBuilder probeConfiguration(TestProbeBuilder probe) {
        // Export Pojo class for TypeConverter bundle
        probe.setHeader(Constants.EXPORT_PACKAGE, "org.apache.camel.itest");
        return probe;
    }

}