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1   /**
2    * Copyright (c) 2008-2012, http://www.snakeyaml.org
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package examples;
17  
18  import java.util.List;
19  
20  import junit.framework.TestCase;
21  
22  import org.yaml.snakeyaml.Yaml;
23  import org.yaml.snakeyaml.constructor.SafeConstructor;
24  
25  public class SafeConstructorExampleTest extends TestCase {
26      @SuppressWarnings("unchecked")
27      public void testConstruct() {
28          String doc = "- 5\n- Person\n- true";
29          Yaml yaml = new Yaml(new SafeConstructor());
30          List<Object> list = (List<Object>) yaml.load(doc);
31          assertEquals(3, list.size());
32          assertEquals(new Integer(5), list.get(0));
33          assertEquals("Person", list.get(1));
34          assertEquals(Boolean.TRUE, list.get(2));
35      }
36  
37      public void testSafeConstruct() {
38          String doc = "- 5\n- !org.yaml.snakeyaml.constructor.Person\n  firstName: Andrey\n  age: 99\n- true";
39          Yaml yaml = new Yaml(new SafeConstructor());
40          try {
41              yaml.load(doc);
42              fail("Custom Java classes should not be created.");
43          } catch (Exception e) {
44              assertEquals(
45                      "null; could not determine a constructor for the tag !org.yaml.snakeyaml.constructor.Person;  in 'string', line 2, column 3:\n    - !org.yaml.snakeyaml.constructor. ... \n      ^",
46                      e.getMessage());
47          }
48      }
49  }