| /** |
| * Copyright (c) 2008-2012, 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.issue139; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| import junit.framework.TestCase; |
| |
| import org.yaml.snakeyaml.Yaml; |
| import org.yaml.snakeyaml.constructor.Constructor; |
| import org.yaml.snakeyaml.error.YAMLException; |
| import org.yaml.snakeyaml.nodes.MappingNode; |
| import org.yaml.snakeyaml.nodes.Node; |
| import org.yaml.snakeyaml.nodes.NodeTuple; |
| |
| public class UniqueKeyTest extends TestCase { |
| |
| public void testNotUnique() { |
| String data = "{key: 1, key: 2}"; |
| Yaml yaml = new Yaml(new UniqueKeyConstructor()); |
| try { |
| yaml.load(data); |
| fail("The same key must be rejected"); |
| } catch (Exception e) { |
| assertEquals("The key is not unique key", e.getMessage()); |
| } |
| } |
| |
| private class UniqueKeyConstructor extends Constructor { |
| |
| @Override |
| protected void constructMapping2ndStep(MappingNode node, Map<Object, Object> mapping) { |
| List<NodeTuple> nodeValue = (List<NodeTuple>) node.getValue(); |
| for (NodeTuple tuple : nodeValue) { |
| Node keyNode = tuple.getKeyNode(); |
| Node valueNode = tuple.getValueNode(); |
| Object key = constructObject(keyNode); |
| if (key != null) { |
| key.hashCode();// check circular dependencies |
| } |
| Object value = constructObject(valueNode); |
| Object old = mapping.put(key, value); |
| if (old != null) { |
| throw new YAMLException("The key is not unique " + key); |
| } |
| } |
| } |
| } |
| |
| } |