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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.issue150;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.Reader;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.regex.Pattern;
import org.junit.Before;
import org.junit.Test;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.constructor.AbstractConstruct;
import org.yaml.snakeyaml.constructor.Constructor;
import org.yaml.snakeyaml.nodes.MappingNode;
import org.yaml.snakeyaml.nodes.Node;
import org.yaml.snakeyaml.nodes.NodeTuple;
import org.yaml.snakeyaml.nodes.ScalarNode;
import org.yaml.snakeyaml.nodes.SequenceNode;
import org.yaml.snakeyaml.nodes.Tag;
public class YamlLoadAsIssueTest {
private StringBuilder doc;
@Before
public void setUp() {
doc = new StringBuilder();
line("!car");
line("plate: 12-XP-F4");
line("wheels:");
line("- w#1");
line("- w#2");
line("- w#3");
line("- w#4");
}
private StringBuilder line(String text) {
return doc.append(text).append('\n');
}
@Test
public void loadConstructsDocumentCorrectly() {
Yaml yaml = yaml();
Object result = yaml.load(reader());
assertNotNull(result);
assertEquals(Car.class, result.getClass());
assertEquals("12-XP-F4", ((Car) result).getPlate());
assertEquals(4, ((Car) result).getWheels().size());
}
private Yaml yaml() {
Yaml yaml = new Yaml(new MyConstructor());
yaml.addImplicitResolver(new Tag("!wheel"), Pattern.compile("w#\\d+"), "w");
return yaml;
}
@Test
public void ignoreImplicitTag() {
Yaml yaml = yaml();
Car car = yaml.loadAs(reader(), Car.class);
assertNotNull(car);
assertEquals("12-XP-F4", car.getPlate());
ArrayList<Wheel> wheels = new ArrayList<Wheel>(car.getWheels());
assertEquals(4, wheels.size());
for (int i = 0; i < wheels.size(); i++) {
assertEquals(wheels.get(i).getId(), Integer.valueOf(i + 1));
}
}
private Reader reader() {
return new StringReader(doc.toString());
}
private class MyConstructor extends Constructor {
public MyConstructor() {
yamlConstructors.put(new Tag("!car"), new ConstructCar());
yamlConstructors.put(new Tag("!wheel"), new ConstructWheel());
}
private String toScalarString(Node node) {
return (String) constructScalar((ScalarNode) node);
}
private class ConstructCar extends AbstractConstruct {
@SuppressWarnings("unchecked")
public Car construct(Node node) {
Car car = new Car();
MappingNode mapping = (MappingNode) node;
List<NodeTuple> list = mapping.getValue();
for (NodeTuple tuple : list) {
String field = toScalarString(tuple.getKeyNode());
if ("plate".equals(field)) {
car.setPlate(toScalarString(tuple.getValueNode()));
}
if ("wheels".equals(field)) {
SequenceNode snode = (SequenceNode) tuple.getValueNode();
List<Wheel> wheels = (List<Wheel>) constructSequence(snode);
car.setWheels(wheels);
}
}
return car;
}
}
private class ConstructWheel extends AbstractConstruct {
public Wheel construct(Node node) {
Wheel w = null;
String strValue = toScalarString(node);
if (strValue != null && strValue.length() > 2) {
strValue = strValue.trim().substring(2);
w = new Wheel();
w.setId(Integer.valueOf(strValue));
}
return w;
}
}
}
}
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