1   /*
2    $Id: RangeTest.java,v 1.9 2005/07/25 08:09:00 phk 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:
9   
10   1. Redistributions of source code must retain copyright
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.
18  
19   3. The name "groovy" must not be used to endorse or promote
20      products derived from this Software without prior written
21      permission of The Codehaus.  For written permission,
22      please contact info@codehaus.org.
23  
24   4. Products derived from this Software may not be called "groovy"
25      nor may "groovy" appear in their names without prior written
26      permission of The Codehaus. "groovy" is a registered
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29   5. Due credit should be given to The Codehaus -
30      http://groovy.codehaus.org/
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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  package groovy.lang;
47  
48  import java.util.List;
49  import java.util.Iterator;
50  import java.math.BigDecimal;
51  
52  import junit.framework.TestCase;
53  
54  /***
55   * @author James Strachan
56   * @version $Revision: 1.9 $
57   */
58  public class RangeTest extends TestCase {
59  
60      public void testSize() {
61          Range r = createRange(0, 10);
62          assertEquals("Size of " + r, 11, r.size());
63          r = createRange(0, 1);
64          assertEquals("Size of " + r, 2, r.size());
65          r = createRange(0, 0);
66          assertEquals("Size of " + r, 1, r.size());
67  
68          r = createRange(new BigDecimal("2.1"), new BigDecimal("10.0"));
69          assertEquals("Size of " + r, 8, r.size());
70      }
71  
72      public void testProperties() {
73          Range r = createRange(0, 10);
74          assertEquals("from", 0, r.getFrom());
75          assertEquals("to", 10, r.getTo());
76      }
77  
78      public void testGet() {
79          Range r = createRange(10, 20);
80          for (int i = 0; i < 10; i++) {
81              Integer value = (Integer) r.get(i);
82              assertEquals("Item at index: " + i, i + 10, value.intValue());
83          }
84  
85          r = createRange(new BigDecimal("3.2"), new BigDecimal("9.9"));
86          for (int i = 0; i < r.size(); i++) {
87              BigDecimal value = (BigDecimal) r.get(i);
88              assertEquals("Item at index: " + i, new BigDecimal("3.2").add(new BigDecimal("" + i)), value);
89          }
90      }
91  
92      public void testGetOutOfRange() {
93          Range r = createRange(10, 20);
94  
95          try {
96              r.get(-1);
97              fail("Should have thrown IndexOut");
98          }
99          catch (IndexOutOfBoundsException e) {
100             // worked
101         }
102         try {
103             r.get(11);
104             fail("Should have thrown IndexOut");
105         }
106         catch (IndexOutOfBoundsException e) {
107             // worked
108         }
109 
110         r = createRange(new BigDecimal("-4.3"), new BigDecimal("1.4"));
111 
112         try {
113             r.get(-1);
114             fail("Should have thrown IndexOut");
115         }
116         catch (IndexOutOfBoundsException e) {
117             // worked
118         }
119         try {
120             r.get(7);
121             fail("Should have thrown IndexOut");
122         }
123         catch (IndexOutOfBoundsException e) {
124             // worked
125         }
126 
127     }
128 
129     public void testContains() {
130         Range r = createRange(10, 20);
131 
132         assertTrue("contains 11", r.contains(new Integer(11)));
133         assertTrue("contains 10", r.contains(new Integer(10)));
134         assertTrue("contains 19", r.contains(new Integer(19)));
135         assertFalse("contains 9", r.contains(new Integer(9)));
136         assertFalse("contains 21", r.contains(new Integer(21)));
137         assertFalse("contains 100", r.contains(new Integer(100)));
138         assertFalse("contains -1", r.contains(new Integer(-1)));
139 
140         r = createRange(new BigDecimal("2.1"), new BigDecimal("10.0"));
141 
142         assertTrue("contains 9.1", r.contains(new BigDecimal("9.1")));
143         assertFalse("contains 8.0", r.contains(new BigDecimal("8.0")));
144     }
145 
146     public void testSubList() {
147         Range r = createRange(10, 20);
148 
149         List s = r.subList(2, 4);
150 
151         Range sr = (Range) s;
152 
153         assertEquals("from", 12, sr.getFrom());
154         assertEquals("to", 13, sr.getTo());
155         assertEquals("size", 2, sr.size());
156 
157         r = createRange(new BigDecimal("0.5"), new BigDecimal("8.5"));
158         assertEquals("size", 9, r.size());
159         s = r.subList(2, 5);
160         sr = (Range) s;
161 
162         assertEquals("from", new BigDecimal("2.5"), sr.getFrom());
163         assertEquals("to", new BigDecimal("4.5"), sr.getTo());
164         assertTrue("contains 4.5", sr.contains(new BigDecimal("4.5")));
165         assertFalse("contains 5.5", sr.contains(new BigDecimal("5.5")));
166         assertEquals("size", 3, sr.size());
167 
168     }
169 
170     public void testHashCodeAndEquals() {
171         Range a = createRange(1, 11);
172         Range b = createRange(1, 11);
173         Range c = createRange(2, 11);
174 
175         assertEquals("hashcode", a.hashCode(), b.hashCode());
176         assertTrue("hashcode", a.hashCode() != c.hashCode());
177 
178         assertEquals("a and b", a, b);
179         assertFalse("a != c", a.equals(c));
180     }
181 
182     public void testIterator() {
183         Range r = createRange(5, 11);
184 
185         int i = 5;
186         for (Iterator it = r.iterator(); it.hasNext(); ) {
187             assertEquals("equals to " + i, new Integer(i), (Integer) (it.next()));
188             i++;
189         }
190 
191         r = createRange(new BigDecimal("5.0"), new BigDecimal("11.0"));
192         BigDecimal one = new BigDecimal("1.0");
193 
194         BigDecimal val = new BigDecimal("5.0");
195         for (Iterator it = r.iterator(); it.hasNext(); ) {
196             assertEquals("equals to " + val, val, (BigDecimal) (it.next()));
197             val = val.add(one);
198         }
199     }
200 
201     protected Range createRange(int from, int to) {
202         return new ObjectRange(new Integer(from), new Integer(to));
203     }
204     
205     protected Range createRange(BigDecimal from, BigDecimal to) {
206         return new ObjectRange(from, to);
207     }
208     
209     protected void assertEquals(String msg, int expected, Object value) {
210         assertEquals(msg, new Integer(expected), value);
211     }
212 
213 
214 }