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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 org.yaml.snakeyaml.issues.issue73;
17  
18  import java.util.Set;
19  import java.util.TreeSet;
20  
21  import junit.framework.TestCase;
22  
23  import org.yaml.snakeyaml.DumperOptions;
24  import org.yaml.snakeyaml.DumperOptions.FlowStyle;
25  import org.yaml.snakeyaml.Util;
26  import org.yaml.snakeyaml.Yaml;
27  import org.yaml.snakeyaml.introspector.BeanAccess;
28  import org.yaml.snakeyaml.nodes.Node;
29  import org.yaml.snakeyaml.nodes.Tag;
30  import org.yaml.snakeyaml.representer.Represent;
31  import org.yaml.snakeyaml.representer.Representer;
32  
33  public class DumpSetAsSequenceExampleTest extends TestCase {
34  
35      public void testDumpFlow() {
36          DumperOptions options = new DumperOptions();
37          options.setAllowReadOnlyProperties(true);
38          Yaml yaml = new Yaml(new SetRepresenter(), options);
39          String output = yaml.dump(createBlog());
40          // System.out.println(output);
41          assertEquals(Util.getLocalResource("issues/issue73-dump7.txt"), output);
42          //
43          check(output);
44      }
45  
46      public void testDumpBlock() {
47          DumperOptions options = new DumperOptions();
48          options.setAllowReadOnlyProperties(true);
49          options.setDefaultFlowStyle(FlowStyle.BLOCK);
50          Yaml yaml = new Yaml(new SetRepresenter(), options);
51          String output = yaml.dump(createBlog());
52          // System.out.println(output);
53          assertEquals(Util.getLocalResource("issues/issue73-dump8.txt"), output);
54          //
55          check(output);
56      }
57  
58      private class SetRepresenter extends Representer {
59          public SetRepresenter() {
60              this.multiRepresenters.put(Set.class, new RepresentIterable());
61          }
62  
63          private class RepresentIterable implements Represent {
64              @SuppressWarnings("unchecked")
65              public Node representData(Object data) {
66                  return representSequence(getTag(data.getClass(), Tag.SEQ), (Iterable<Object>) data,
67                          null);
68  
69              }
70          }
71      }
72  
73      private Blog createBlog() {
74          Blog blog = new Blog("Test Me!");
75          blog.addPost(new Post("Title1", "text 1"));
76          blog.addPost(new Post("Title2", "text text 2"));
77          blog.numbers.add(19);
78          blog.numbers.add(17);
79          TreeSet<String> labels = new TreeSet<String>();
80          labels.add("Java");
81          labels.add("YAML");
82          labels.add("SnakeYAML");
83          blog.setLabels(labels);
84          return blog;
85      }
86  
87      private void check(String doc) {
88          Yaml yamlLoader = new Yaml();
89          yamlLoader.setBeanAccess(BeanAccess.FIELD);
90          Blog blog = (Blog) yamlLoader.load(doc);
91          assertEquals("Test Me!", blog.getName());
92          assertEquals(2, blog.numbers.size());
93          assertEquals(2, blog.getPosts().size());
94          for (Post post : blog.getPosts()) {
95              assertEquals(Post.class, post.getClass());
96          }
97      }
98  }