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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.issue133;
import java.awt.Point;
import junit.framework.TestCase;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.introspector.Property;
import org.yaml.snakeyaml.nodes.NodeTuple;
import org.yaml.snakeyaml.nodes.Tag;
import org.yaml.snakeyaml.representer.Representer;
/**
* to test http://code.google.com/p/snakeyaml/issues/detail?id=133
*/
public class StackOverflowTest extends TestCase {
public void testDumpRecursiveObject() {
try {
Yaml yaml = new Yaml();
// by default it must fail with StackOverflow
yaml.dump(new Point());
fail("getLocation() is recursive.");
} catch (Throwable e) {
String message = e.getMessage();
assertTrue("StackOverflow has no message: " + e.getMessage(), message == null
|| message.contains("Unable to find getter for property 'location'"));
}
}
/**
* Since Point.getLocation() creates a new instance of Point class,
* SnakeYAML will fail to dump an instance of Point if 'getLocation()' is
* also included.
*
* Since Point is not really a JavaBean, we can safely skip the recursive
* property when we dump the instance of Point.
*/
private class PointRepresenter extends Representer {
@Override
protected NodeTuple representJavaBeanProperty(Object javaBean, Property property,
Object propertyValue, Tag customTag) {
if (javaBean instanceof Point && "location".equals(property.getName())) {
return null;
} else {
return super
.representJavaBeanProperty(javaBean, property, propertyValue, customTag);
}
}
}
public void testDump() {
Yaml yaml = new Yaml(new PointRepresenter());
String output = yaml.dump(new Point());
assertEquals("!!java.awt.Point {x: 0, y: 0}\n", output);
}
}
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