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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.issue311;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
import org.yaml.snakeyaml.DumperOptions;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.constructor.Constructor;
import org.yaml.snakeyaml.nodes.Node;
import org.yaml.snakeyaml.nodes.NodeId;
import org.yaml.snakeyaml.nodes.ScalarNode;
import org.yaml.snakeyaml.nodes.Tag;
import org.yaml.snakeyaml.representer.Represent;
import org.yaml.snakeyaml.representer.Representer;
public class BooleanEnumTest {
@Test
public void loadEnum() {
Yaml yaml = new Yaml(new MyConstructor(), new MyRepresenter());
BeanWithEnum parsed =
yaml.loadAs("{boolField: true, enumField: true, name: '10'}", BeanWithEnum.class);
// System.out.println(parsed.getEnumField());
assertEquals(BooleanEnum.TRUE, parsed.getEnumField());
assertEquals("10", parsed.getName());
}
@Test
public void loadEnumUndefined() {
Yaml yaml = new Yaml(new MyConstructor(), new MyRepresenter());
BeanWithEnum parsed =
yaml.loadAs("{boolField: true, enumField: nonsense, name: bar}", BeanWithEnum.class);
// System.out.println(parsed.getEnumField());
assertEquals(BooleanEnum.UNKNOWN, parsed.getEnumField());
assertEquals("bar", parsed.getName());
}
@Test
public void dumpEnum() {
BeanWithEnum bean = new BeanWithEnum(true, "10", BooleanEnum.TRUE);
Yaml yaml = new Yaml(new MyConstructor(), new MyRepresenter());
String output = yaml.dumpAs(bean, Tag.MAP, DumperOptions.FlowStyle.FLOW);
assertEquals("{boolField: true, enumField: 'true', name: '10'}\n", output);
}
class MyRepresenter extends Representer {
public MyRepresenter() {
this.representers.put(BooleanEnum.class, new RepresentEnum());
}
private class RepresentEnum implements Represent {
public Node representData(Object data) {
BooleanEnum myEnum = (BooleanEnum) data;
String value;
switch (myEnum) {
case TRUE:
value = "true";
break;
case FALSE:
value = "false";
break;
case UNKNOWN:
value = "unknown";
break;
default:
throw new IllegalArgumentException();
}
return representScalar(Tag.STR, value);
}
}
}
class MyConstructor extends Constructor {
public MyConstructor() {
this.yamlClassConstructors.put(NodeId.scalar, new ConstructEnum());
}
private class ConstructEnum extends ConstructScalar {
public Object construct(Node node) {
if (node.getType().equals(BooleanEnum.class)) {
String val = constructScalar((ScalarNode) node);
if ("true".equals(val)) {
return BooleanEnum.TRUE;
} else if ("false".equals(val)) {
return BooleanEnum.FALSE;
} else {
return BooleanEnum.UNKNOWN;
}
}
return super.construct(node);
}
}
}
}
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