    1   /*
    2    * $Id: MetaClassTest.java 2383 2005-06-23 18:36:28Z dierk $
    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  import java.util.List;
    41  import java.util.Iterator;
    42
    43  import org.codehaus.groovy.runtime.InvokerHelper;
    44
    45  /***
    46   * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
    47   * @version $Revision: 2383 $
    48   */
    49  public class MetaClassTest extends GroovyTestCase {
    50
    51      public void testMetaClass() {
    52          Class foo = String[].class;
    53          System.out.println(foo + " name: " + foo.getName());
    54
    55          MetaClass metaClass = InvokerHelper.getMetaClass(this);
    56
    57          assertTrue("got metaclass", metaClass != null);
    58
    59          metaClass.invokeMethod(this, "doSomething", new Object[0]);
    60      }
    61
    62      public void testArray() {
    63          String[] value = new String[] { "hello" };
    64
    65          MetaClass metaClass = InvokerHelper.getMetaClass(value);
    66
    67          assertTrue("got metaclass", metaClass != null);
    68
    69          metaClass.invokeMethod(value, "toString", new Object[0]);
    70      }
    71
    72      public void testString() {
    73          String value = "hello";
    74
    75          MetaClass metaClass = InvokerHelper.getMetaClass(value);
    76
    77          assertTrue("got metaclass", metaClass != null);
    78
    79          Object answer = metaClass.invokeMethod(value, "toString", new Object[0]);
    80
    81          assertEquals("hello", answer);
    82      }
    83
    84      public void testObject() {
    85          Object value = new Object();
    86
    87          MetaClass metaClass = InvokerHelper.getMetaClass(value);
    88
    89          assertTrue("got metaclass", metaClass != null);
    90
    91          metaClass.invokeMethod(value, "toString", new Object[0]);
    92      }
    93
    94      public void testPublicField() {
    95          DymmyClass dymmyClass = new DymmyClass();
    96
    97          MetaClass metaClass = InvokerHelper.getMetaClass(dymmyClass);
    98
    99          assertEquals(metaClass.getProperty(dymmyClass, "x"), new Integer(0));
    100         assertEquals(metaClass.getProperty(dymmyClass, "y"), "none");
    101
    102         metaClass.setProperty(dymmyClass, "x", new Integer(25));
    103         assertEquals(dymmyClass.x, 25);
    104
    105         metaClass.setProperty(dymmyClass, "y", "newvalue");
    106         assertEquals(dymmyClass.y, "newvalue");
    107     }
    108
    109     public void testSetPropertyWithInt() {
    110         DymmyClass dymmyClass = new DymmyClass();
    111         MetaClass metaClass = InvokerHelper.getMetaClass(dymmyClass);
    112         metaClass.setProperty(dymmyClass, "anInt", new Integer(10));
    113     }
    114
    115     public void testSetPropertyWithDoubleArray() {
    116         DymmyClass dymmyClass = new DymmyClass();
    117         MetaClass metaClass = InvokerHelper.getMetaClass(dymmyClass);
    118         Double[][] matrix2 =
    119         {
    120                 {
    121                         new Double(35), new Double(50), new Double(120)
    122                 },
    123                 {
    124                         new Double(75), new Double(80), new Double(150)
    125                 }
    126         };
    127         metaClass.setProperty(dymmyClass, "matrix", matrix2);
    128         metaClass.setProperty(dymmyClass, "matrix2", matrix2);
    129     }
    130
    131     public void testSetPropertyWithArray() {
    132         DymmyClass dymmyClass = new DymmyClass();
    133         MetaClass metaClass = InvokerHelper.getMetaClass(dymmyClass);
    134
    135         // test int[]
    136         int[] ints = new int[]{
    137                 0, 1, 2, 3
    138         };
    139         metaClass.setProperty(dymmyClass, "ints", ints);
    140         assertEquals(ints, metaClass.getProperty(dymmyClass, "ints"));
    141
    142         // test Integer[]
    143         Integer[] integers = new Integer[]{
    144                 new Integer(0), new Integer(1), new Integer(2), new Integer(3)
    145         };
    146         metaClass.setProperty(dymmyClass, "integers", integers);
    147         assertEquals(integers, metaClass.getProperty(dymmyClass, "integers"));
    148     }
    149
    150     public void testSetPropertyWithList() {
    151         DymmyClass dymmyClass = new DymmyClass();
    152         MetaClass metaClass = InvokerHelper.getMetaClass(dymmyClass);
    153
    154         // test list
    155         ArrayList list = new ArrayList();
    156         list.add(new Integer(120));
    157         list.add(new Integer(150));
    158
    159         // test int[]
    160         metaClass.setProperty(dymmyClass, "ints", list);
    161
    162         // test Integer[]
    163         metaClass.setProperty(dymmyClass, "integers", list);
    164     }
    165
    166     public void testMetaMethodsOnlyAddedOnce() {
    167         MetaClass metaClass = InvokerHelper.getMetaClass("some String");
    168
    169         List methods = metaClass.getMetaMethods();
    170         for (Iterator iter = methods.iterator(); iter.hasNext();) {
    171             MetaMethod method = (MetaMethod) iter.next();
    172             int count = 0;
    173             for (Iterator inner = methods.iterator(); inner.hasNext(); ) {
    174                 MetaMethod runner = (MetaMethod) inner.next();
    175                 if (method.equals(runner)) {
    176                     System.out.println("runner = " + runner);
    177                     System.out.println("method = " + method);
    178                     count++;
    179                 }
    180             }
    181             assertEquals("count of Method "+method.getName(), 1, count);
    182         }
    183
    184     }
    185
    186
    187
    188     public void doSomething() {
    189         System.out.println("Called doSomething()");
    190     }
    191 }
    192
    193
    194 class DymmyClass {
    195     public int x = 0;
    196     public String y = "none";
    197
    198     private int anInt;
    199     private int[] ints;
    200     private Integer[] integers;
    201     double[][] matrix2;
    202     Double[][] matrix;
    203
    204     public Integer[] getIntegers() {
    205         return integers;
    206     }
    207
    208     public void setIntegers(Integer[] integers) {
    209         this.integers = integers;
    210     }
    211
    212     public int[] getInts() {
    213         return ints;
    214     }
    215
    216     public void setInts(int[] ints) {
    217         this.ints = ints;
    218     }
    219
    220     public int getAnInt() {
    221         return anInt;
    222     }
    223
    224     public void setAnInt(int anInt) {
    225         this.anInt = anInt;
    226     }
    227
    228     public void setMatrix(Double[][] matrix) {
    229         this.matrix = matrix;
    230     }
    231
    232     public void setMatrix2(double[][] matrixReloaded) {
    233         this.matrix2 = matrixReloaded;
    234     }
    235
    236 }
    237