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/**
* Copyright (c) 2008, SnakeYAML
*
* 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 static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.awt.Point;
import org.junit.Test;
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 {
@Test
public void testDumpRecursiveObjectOnJava6() {
org.junit.Assume.assumeTrue(System.getProperty("java.version").startsWith("1.6"));
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);
}
}
}
@Test
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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