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/**
* Copyright (c) 2008, http://www.snakeyaml.org
*
* Licensed 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.
*/
package org.yaml.snakeyaml.issues.issue127;
import java.util.LinkedHashMap;
import java.util.Map;
import junit.framework.TestCase;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.nodes.Node;
import org.yaml.snakeyaml.nodes.Tag;
import org.yaml.snakeyaml.representer.Represent;
import org.yaml.snakeyaml.representer.Representer;
public class NullAliasTest extends TestCase {
private static final Tag MY_TAG = new Tag("tag:example.com,2011:bean");
public void testRespresenter() {
Bean bean = new Bean();
bean.setA("a"); // leave b null
Yaml yaml = new Yaml(new BeanRepresenter());
String output = yaml.dump(bean);
assertEquals("!<tag:example.com,2011:bean>\na: a\nb: null\n", output);
}
class BeanRepresenter extends Representer {
public BeanRepresenter() {
this.representers.put(Bean.class, new RepresentBean());
}
private class RepresentBean implements Represent {
public Node representData(Object data) {
Bean bean = (Bean) data;
Map<String, Object> fields = new LinkedHashMap<String, Object>(2);
fields.put("a", bean.getA());
fields.put("b", bean.getB());
return representMapping(MY_TAG, fields, false);
}
}
}
}
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