1   /*
2    * $Id: MetaClassTest.java,v 1.4 2004/03/26 16:55:52 ckl Exp $
3    * 
4    * Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
5    * 
6    * Redistribution and use of this software and associated documentation
7    * ("Software"), with or without modification, are permitted provided that the
8    * following conditions are met: 1. Redistributions of source code must retain
9    * copyright statements and notices. Redistributions must also contain a copy
10   * of this document. 2. Redistributions in binary form must reproduce the above
11   * copyright notice, this list of conditions and the following disclaimer in
12   * the documentation and/or other materials provided with the distribution. 3.
13   * The name "groovy" must not be used to endorse or promote products derived
14   * from this Software without prior written permission of The Codehaus. For
15   * written permission, please contact info@codehaus.org. 4. Products derived
16   * from this Software may not be called "groovy" nor may "groovy" appear in
17   * their names without prior written permission of The Codehaus. "groovy" is a
18   * registered trademark of The Codehaus. 5. Due credit should be given to The
19   * Codehaus - http://groovy.codehaus.org/
20   * 
21   * THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS ``AS IS'' AND ANY
22   * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
23   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24   * DISCLAIMED. IN NO EVENT SHALL THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR
25   * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
27   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
28   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
31   * DAMAGE.
32   *  
33   */
34  
35  package groovy.lang;
36  
37  import groovy.util.GroovyTestCase;
38  
39  import java.util.ArrayList;
40  
41  import org.codehaus.groovy.runtime.InvokerHelper;
42  
43  /***
44   * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
45   * @version $Revision: 1.4 $
46   */
47  public class MetaClassTest extends GroovyTestCase {
48  
49      public void testMetaClass() {
50          Class foo = String[].class;
51          System.out.println(foo + " name: " + foo.getName());
52  
53          MetaClass metaClass = InvokerHelper.getMetaClass(this);
54  
55          assertTrue("got metaclass", metaClass != null);
56  
57          metaClass.invokeMethod(this, "doSomething", new Object[0]);
58      }
59  
60      public void testArray() {
61          String[] value = new String[] { "hello" };
62  
63          MetaClass metaClass = InvokerHelper.getMetaClass(value);
64  
65          assertTrue("got metaclass", metaClass != null);
66  
67          metaClass.invokeMethod(value, "toString", new Object[0]);
68      }
69  
70      public void testString() {
71          String value = "hello";
72  
73          MetaClass metaClass = InvokerHelper.getMetaClass(value);
74  
75          assertTrue("got metaclass", metaClass != null);
76  
77          Object answer = metaClass.invokeMethod(value, "toString", new Object[0]);
78  
79          assertEquals("hello", answer);
80      }
81  
82      public void testObject() {
83          Object value = new Object();
84  
85          MetaClass metaClass = InvokerHelper.getMetaClass(value);
86  
87          assertTrue("got metaclass", metaClass != null);
88  
89          metaClass.invokeMethod(value, "toString", new Object[0]);
90      }
91  
92      public void testPublicField() {
93          DymmyClass dymmyClass = new DymmyClass();
94          
95          MetaClass metaClass = InvokerHelper.getMetaClass(dymmyClass);
96          
97          assertEquals(metaClass.getProperty(dymmyClass, "x"), new Integer(0));
98          assertEquals(metaClass.getProperty(dymmyClass, "y"), "none");
99          
100         metaClass.setProperty(dymmyClass, "x", new Integer(25));
101         assertEquals(dymmyClass.x, 25);
102 
103         metaClass.setProperty(dymmyClass, "y", "newvalue");
104         assertEquals(dymmyClass.y, "newvalue");
105     }
106     
107     public void testSetPropertyWithInt() {
108         DymmyClass dymmyClass = new DymmyClass();
109         MetaClass metaClass = InvokerHelper.getMetaClass(dymmyClass);
110         metaClass.setProperty(dymmyClass, "anInt", new Integer(10));
111     }
112 
113     public void testSetPropertyWithDoubleArray() {
114         DymmyClass dymmyClass = new DymmyClass();
115         MetaClass metaClass = InvokerHelper.getMetaClass(dymmyClass);
116         Double[][] matrix2 =
117         {
118                 {
119                         new Double(35), new Double(50), new Double(120)
120                 }, 
121                 {
122                         new Double(75), new Double(80), new Double(150)
123                 }
124         };
125         metaClass.setProperty(dymmyClass, "matrix", matrix2);
126         metaClass.setProperty(dymmyClass, "matrix2", matrix2);
127     }
128 
129     public void testSetPropertyWithArray() {
130         DymmyClass dymmyClass = new DymmyClass();
131         MetaClass metaClass = InvokerHelper.getMetaClass(dymmyClass);
132 
133         // test int[]
134         int[] ints = new int[]{
135                 0, 1, 2, 3
136         };
137         metaClass.setProperty(dymmyClass, "ints", ints);
138         assertEquals(ints, metaClass.getProperty(dymmyClass, "ints"));
139 
140         // test Integer[]
141         Integer[] integers = new Integer[]{
142                 new Integer(0), new Integer(1), new Integer(2), new Integer(3)
143         };
144         metaClass.setProperty(dymmyClass, "integers", integers);
145         assertEquals(integers, metaClass.getProperty(dymmyClass, "integers"));
146     }
147 
148     public void testSetPropertyWithList() {
149         DymmyClass dymmyClass = new DymmyClass();
150         MetaClass metaClass = InvokerHelper.getMetaClass(dymmyClass);
151 
152         // test list
153         ArrayList list = new ArrayList();
154         list.add(new Integer(120));
155         list.add(new Integer(150));
156 
157         // test int[]
158         metaClass.setProperty(dymmyClass, "ints", list);
159 
160         // test Integer[]
161         metaClass.setProperty(dymmyClass, "integers", list);
162     }
163     
164     public void doSomething() {
165         System.out.println("Called doSomething()");
166     }
167 }
168 
169 
170 class DymmyClass {
171     public int x = 0;
172     public String y = "none";
173     
174     private int anInt;
175     private int[] ints;
176     private Integer[] integers;
177     double[][] matrix2;
178     Double[][] matrix;
179 
180     public Integer[] getIntegers() {
181         return integers;
182     }
183 
184     public void setIntegers(Integer[] integers) {
185         this.integers = integers;
186     }
187 
188     public int[] getInts() {
189         return ints;
190     }
191 
192     public void setInts(int[] ints) {
193         this.ints = ints;
194     }
195 
196     public int getAnInt() {
197         return anInt;
198     }
199 
200     public void setAnInt(int anInt) {
201         this.anInt = anInt;
202     }
203 
204     public void setMatrix(Double[][] matrix) {
205         this.matrix = matrix;
206     }
207 
208     public void setMatrix2(double[][] matrixReloaded) {
209         this.matrix2 = matrixReloaded;
210     }
211 
212 }
213