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1   /**
2    * Copyright (c) 2008-2011, 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  
17  package org.yaml.snakeyaml.issues.issue100;
18  
19  import java.util.HashSet;
20  import java.util.List;
21  import java.util.Map;
22  import java.util.Set;
23  
24  import junit.framework.TestCase;
25  
26  import org.yaml.snakeyaml.Util;
27  import org.yaml.snakeyaml.Yaml;
28  import org.yaml.snakeyaml.constructor.Constructor;
29  
30  public class MergeJavaBeanTest extends TestCase {
31  
32      @SuppressWarnings("unchecked")
33      public void testNoMerge() {
34          String input = "- &id001 !!org.yaml.snakeyaml.issues.issue100.Data {age: 11, id: id123}\n- *id001";
35          // System.out.println(input);
36          Yaml yaml = new Yaml();
37          List<Data> list = (List<Data>) yaml.load(input);
38          for (Data data : list) {
39              // System.out.println(data);
40              assertEquals("id123", data.getId());
41              assertEquals(11, data.getAge());
42          }
43      }
44  
45      public void testMergeWithTags() {
46          String input = Util.getLocalResource("issues/issue100-1.yaml");
47          // System.out.println(input);
48          Yaml yaml = new Yaml();
49  
50          List<?> list = (List<?>) yaml.load(input);
51          // First object: Data ( 11, "id123" )
52          assertEquals(list.get(0).getClass(), Data.class);
53          assertEquals(11, ((Data) list.get(0)).getAge());
54          assertEquals("id123", ((Data) list.get(0)).getId());
55  
56          // Second object: Data ( 13, "id456" )
57          assertEquals(list.get(1).getClass(), Data.class);
58          assertEquals(13, ((Data) list.get(1)).getAge());
59          assertEquals("id456", ((Data) list.get(1)).getId());
60  
61          // Third object: Data ( 11, "id789" )
62          assertEquals(list.get(2).getClass(), Data.class);
63          assertEquals(11, ((Data) list.get(2)).getAge());
64          assertEquals("id789", ((Data) list.get(2)).getId());
65  
66          // 4th object: DataMore ( 30, "id123" )
67          assertEquals(list.get(3).getClass(), DataMore.class);
68          assertEquals(30, ((DataMore) list.get(3)).getAge());
69          assertEquals("id123", ((DataMore) list.get(3)).getId());
70          assertTrue(((DataMore) list.get(3)).isComplete());
71  
72          // 5th object: Map ( age: 100 )
73          assertTrue(list.get(4) instanceof Map);
74          assertEquals(1, ((Map<?, ?>) list.get(4)).size());
75          assertTrue(((Map<?, ?>) list.get(4)).containsKey("age"));
76          assertEquals(100, ((Map<?, ?>) list.get(4)).get("age"));
77  
78          // 6th object: DataMore ( 100, "id789" )
79          assertEquals(list.get(5).getClass(), DataMore.class);
80          assertEquals(100, ((DataMore) list.get(5)).getAge());
81          assertEquals("id789", ((DataMore) list.get(5)).getId());
82          assertFalse(((DataMore) list.get(5)).isComplete());
83          // All instances except the last Map must be different Data instances
84          Set<Data> dataSet = new HashSet<Data>();
85          for (Object data : list) {
86              if (data instanceof Data) {
87                  dataSet.add((Data) data);
88              }
89          }
90          assertEquals("Must be all but one Data instances.", list.size() - 1, dataSet.size());
91      }
92  
93      /**
94       * Since to explicit tag is provided JavaBean properties are used to create
95       * a map
96       */
97      @SuppressWarnings("unchecked")
98      public void testMergeBeanToMap() {
99          String input = "- &id001 !!org.yaml.snakeyaml.issues.issue100.Data {age: 11, id: id123}\n- << : *id001";
100         // System.out.println(input);
101         Yaml yaml = new Yaml();
102         List<Object> list = (List<Object>) yaml.load(input);
103         // First object: Data ( 11, "id123" )
104         Data first = (Data) list.get(0);
105         assertEquals(11, first.getAge());
106         assertEquals("id123", first.getId());
107         // Second object is map
108         Map<?, ?> second = (Map<?, ?>) list.get(1);
109         assertEquals(11, second.get("age"));
110         assertEquals("id123", second.get("id"));
111     }
112 
113     @SuppressWarnings("unchecked")
114     public void testMergeAndDeviate() {
115         String input = "- &id001 !!org.yaml.snakeyaml.issues.issue100.Data {age: 11, id: id123}\n- <<: *id001\n  id: id456";
116         // System.out.println(input);
117         Yaml yaml = new Yaml();
118         List<Object> list = (List<Object>) yaml.load(input);
119         // First object: Data ( 11, "id123" )
120         Data first = (Data) list.get(0);
121         assertEquals(11, first.getAge());
122         assertEquals("id123", first.getId());
123         // Second object is map with a diffrent id
124         Map<?, ?> second = (Map<?, ?>) list.get(1);
125         assertEquals(11, second.get("age"));
126         assertEquals("id456", second.get("id"));
127     }
128 
129     /**
130      * <pre>
131      * Test that the merge-override works correctly in the case of custom classes / data types.
132      * Two base objects are specified:
133      *    id001 refers to Data ( 11, "id123" )
134      *    id002 refers to Data ( 37, null )  with a literal null value
135      * The third object is specified as having the properties of id001, with the properties of
136      * id002 overriding where they conflict.
137      *    Data ( 37, "id123" )
138      * </pre>
139      */
140     @SuppressWarnings("unchecked")
141     public void testMergeAndDeviateOverride() {
142         String input = "- &id001 !!org.yaml.snakeyaml.issues.issue100.Data {age: 11, id: id123}\n- &id002 !!org.yaml.snakeyaml.issues.issue100.Data {age: 37}\n- <<: [ *id002, *id001 ]";
143         // System.out.println(input);
144         Yaml yaml = new Yaml();
145         List<Data> list = (List<Data>) yaml.load(input);
146 
147         // First object: Data ( 11, "id123" )
148         assertEquals(11, list.get(0).getAge());
149         assertEquals("id123", list.get(0).getId());
150 
151         // Second object: Data ( 37, null )
152         assertEquals(37, list.get(1).getAge());
153         assertEquals(null, list.get(1).getId());
154 
155         // Third object: map
156         Map<?, ?> third = (Map<?, ?>) list.get(2);
157         assertEquals(37, third.get("age"));
158         assertEquals("id123", third.get("id"));
159     }
160 
161     /**
162      * When the merged JavaBean is itself a JavaBean property then explicit tag
163      * is not required
164      */
165     public void testMergeBeanProperty() {
166         String input = Util.getLocalResource("issues/issue100-3.yaml");
167         // System.out.println(input);
168         Yaml yaml = new Yaml(new Constructor(DataBean.class));
169         DataBean bean = (DataBean) yaml.load(input);
170         assertEquals("id001", bean.getId());
171         assertEquals("id002", bean.getData().getId());
172         assertEquals(17, bean.getData().getAge());
173         assertEquals(17, bean.getMore().getAge());
174         assertEquals("more003", bean.getMore().getId());
175         assertTrue(bean.getMore().isComplete());
176     }
177 
178     /**
179      * Merge map to JavaBean
180      */
181     @SuppressWarnings("unchecked")
182     public void testMergeMapToJavaBean() {
183         String input = "- &id001 { age: 11, id: id123 }\n- !!org.yaml.snakeyaml.issues.issue100.Data\n  <<: *id001\n  id: id456";
184         // System.out.println(input);
185         Yaml yaml = new Yaml(new Constructor());
186         List<Object> objects = (List<Object>) yaml.load(input);
187         assertEquals(2, objects.size());
188         // Check first type
189         Object first = objects.get(0);
190         Map<Object, Object> firstMap = (Map<Object, Object>) first;
191         // Check first contents
192         assertEquals(11, firstMap.get("age"));
193         assertEquals("id123", firstMap.get("id"));
194         // Check second contents
195         Data secondData = (Data) objects.get(1);
196         assertEquals(11, secondData.getAge());
197         assertEquals("id456", secondData.getId());
198     }
199 }