1   /*
2    $Id: InvokerTest.java,v 1.14 2005/03/02 08:22:46 jstrachan 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
8    that the following conditions are met:
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11      statements and notices.  Redistributions must also contain a
12      copy of this document.
13  
14   2. Redistributions in binary form must reproduce the
15      above copyright notice, this list of conditions and the
16      following disclaimer in the documentation and/or other
17      materials provided with the distribution.
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19   3. The name "groovy" must not be used to endorse or promote
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24   4. Products derived from this Software may not be called "groovy"
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26      permission of The Codehaus. "groovy" is a registered
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32   THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
33   ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
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45   */
46  
47  package org.codehaus.groovy.runtime;
48  
49  import groovy.lang.GroovyRuntimeException;
50  import groovy.util.GroovyTestCase;
51  
52  import java.util.ArrayList;
53  import java.util.Collection;
54  import java.util.HashMap;
55  import java.util.Iterator;
56  import java.util.List;
57  import java.util.Map;
58  import java.util.Collections;
59  import java.util.Arrays;
60  
61  
62  /***
63   * Test the Invoker class
64   * 
65   * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
66   * @version $Revision: 1.14 $
67   */
68  public class InvokerTest extends GroovyTestCase {
69  
70      protected Invoker invoker = new Invoker();
71  
72      public void testAsCollectionWithArray() {
73          Object[] array = { "A", "B", "C" };
74          assertAsCollection(array, 3);
75      }
76  
77      public void testAsCollectionWithMap() {
78          Map map = new HashMap();
79          map.put("A", "abc");
80          map.put("B", "def");
81          map.put("C", "xyz");
82          assertAsCollection(map, 3);
83      }
84  
85      public void testAsCollectionWithList() {
86          List list = new ArrayList();
87          list.add("A");
88          list.add("B");
89          list.add("C");
90          assertAsCollection(list, 3);
91      }
92  
93      public void testInvokerException() throws Throwable {
94          try {
95              throw new GroovyRuntimeException("message", new NullPointerException());
96          }
97          catch (GroovyRuntimeException e) {
98              // worked
99              assertEquals("message", e.getMessage());
100             assertTrue(e.getCause() instanceof NullPointerException);
101         }
102     }
103 
104     public void testAsBoolean() {
105         assertAsBoolean(true, Boolean.TRUE);
106         assertAsBoolean(true, "true");
107         assertAsBoolean(true, "TRUE");
108         assertAsBoolean(true, "false");
109         assertAsBoolean(false, Boolean.FALSE);
110         assertAsBoolean(false, (String) null);
111         assertAsBoolean(true, new Integer(1234));
112         assertAsBoolean(false, new Integer(0));
113         assertAsBoolean(true, new Float(0.3f));
114         assertAsBoolean(true, new Double(3.0f));
115         assertAsBoolean(false, new Float(0.0f));
116 		assertAsBoolean(false, Collections.EMPTY_LIST);
117 		assertAsBoolean(true, Arrays.asList(new Integer[] { new Integer(1) }));
118        }
119     
120     public void testLessThan() {
121         assertTrue(InvokerHelper.compareLessThan(new Integer(1), new Integer(2)));
122         assertTrue(InvokerHelper.compareLessThanEqual(new Integer(2), new Integer(2)));
123     }
124     
125     public void testGreaterThan() {
126         assertTrue(InvokerHelper.compareGreaterThan(new Integer(3), new Integer(2)));
127         assertTrue(InvokerHelper.compareGreaterThanEqual(new Integer(2), new Integer(2)));
128     }
129     
130     public void testCompareTo() {
131         assertTrue(InvokerHelper.compareEqual("x", new Integer('x')));
132     }
133     
134     // Implementation methods
135     //-------------------------------------------------------------------------
136 
137     /***
138      * Asserts the asBoolean method returns the given flag
139      */
140     protected void assertAsBoolean(boolean expected, Object value) {
141         boolean answer = InvokerHelper.asBool(value);
142         assertEquals("value: " + value + " asBoolean()", expected, answer);
143     }
144 
145     /***
146      * Asserts that the given object can be converted into a collection and iterator
147      * of the given size
148      */
149     protected void assertAsCollection(Object collectionObject, int count) {
150         Collection collection = invoker.asCollection(collectionObject);
151         assertTrue("Collection is not null", collection != null);
152         assertEquals("Collection size", count, collection.size());
153 
154         assertIterator("collections iterator", collection.iterator(), count);
155         assertIterator("invoker.asIterator", invoker.asIterator(collectionObject), count);
156         assertIterator("invoker.asIterator(invoker.asCollection)", invoker.asIterator(collection), count);
157         assertIterator("invoker.asIterator(invoker.asIterator)", invoker.asIterator(invoker.asIterator(collectionObject)), count);
158     }
159 
160     /***
161      * Asserts that the iterator is valid and of the right size
162      */
163     protected void assertIterator(String message, Iterator iterator, int count) {
164         for (int i = 0; i < count; i++) {
165             assertTrue(message + ": should have item: " + i, iterator.hasNext());
166             assertTrue(message + ": item: " + i + " should not be null", iterator.next() != null);
167         }
168 
169         assertFalse(
170             message + ": should not have item after iterating through: " + count + " items",
171             iterator.hasNext());
172     }
173 
174    
175 }