Source Code Cross Referenced for SubsetIteratorTest.java in  » Issue-Tracking » scarab-0.21 » org » tigris » scarab » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Issue Tracking » scarab 0.21 » org.tigris.scarab.util 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package org.tigris.scarab.util;
002:
003:        /* ================================================================
004:         * Copyright (c) 2000-2002 CollabNet.  All rights reserved.
005:         *
006:         * Redistribution and use in source and binary forms, with or without
007:         * modification, are permitted provided that the following conditions are
008:         * met:
009:         *
010:         * 1. Redistributions of source code must retain the above copyright
011:         * notice, this list of conditions and the following disclaimer.
012:         *
013:         * 2. Redistributions in binary form must reproduce the above copyright
014:         * notice, this list of conditions and the following disclaimer in the
015:         * documentation and/or other materials provided with the distribution.
016:         *
017:         * 3. The end-user documentation included with the redistribution, if
018:         * any, must include the following acknowlegement: "This product includes
019:         * software developed by Collab.Net <http://www.Collab.Net/>."
020:         * Alternately, this acknowlegement may appear in the software itself, if
021:         * and wherever such third-party acknowlegements normally appear.
022:         *
023:         * 4. The hosted project names must not be used to endorse or promote
024:         * products derived from this software without prior written
025:         * permission. For written permission, please contact info@collab.net.
026:         *
027:         * 5. Products derived from this software may not use the "Tigris" or
028:         * "Scarab" names nor may "Tigris" or "Scarab" appear in their names without
029:         * prior written permission of Collab.Net.
030:         *
031:         * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
032:         * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
033:         * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
034:         * IN NO EVENT SHALL COLLAB.NET OR ITS CONTRIBUTORS BE LIABLE FOR ANY
035:         * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
036:         * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
037:         * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
038:         * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
039:         * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
040:         * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
041:         * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
042:         *
043:         * ====================================================================
044:         *
045:         * This software consists of voluntary contributions made by many
046:         * individuals on behalf of Collab.Net.
047:         */
048:
049:        import junit.framework.TestCase;
050:
051:        import java.util.ArrayList;
052:        import java.util.Collection;
053:        import java.util.NoSuchElementException;
054:
055:        /**
056:         * used for testing org.tigris.scarab.util.SubsetIterator
057:         * 
058:         * @author <a href="mailto:sebastian.dietrich@anecon.com">Sebastian Dietrich</a>
059:         */
060:        public class SubsetIteratorTest extends TestCase {
061:            protected SubsetIterator subsetIterator;
062:            protected SubsetIterator subsetIteratorUntilLast;
063:
064:            protected static final String FIRST = "first element";
065:            protected static final String SECOND = "second element";
066:            protected static final String THIRD = "third element";
067:            protected static final String FOURTH = "fourth element";
068:            protected static final String LAST = "last element";
069:
070:            public SubsetIteratorTest(String testName) {
071:                super (testName);
072:            }
073:
074:            public void setUp() {
075:                Collection coll = new ArrayList();
076:
077:                coll.add(FIRST);
078:                coll.add(SECOND);
079:                coll.add(THIRD);
080:                coll.add(FOURTH);
081:                coll.add(LAST);
082:
083:                // a SubsetIterator from "third element" to "fourth element"
084:                subsetIterator = new SubsetIterator(coll.iterator(), 2, 2);
085:
086:                // a SubsetIterator from "third element" to the last element
087:                subsetIteratorUntilLast = new SubsetIterator(coll.iterator(), 2);
088:            }
089:
090:            public void tearDown() {
091:                subsetIterator = null;
092:            }
093:
094:            public void testConstructor() {
095:                assertEquals("Could not fetch third element", subsetIterator
096:                        .next(), THIRD);
097:
098:                assertTrue("Filled collection should have next element",
099:                        subsetIterator.hasNext());
100:
101:                subsetIterator.remove(); // remove "third element"
102:                assertEquals("Could not fetch fourth element", subsetIterator
103:                        .next(), FOURTH);
104:                assertFalse(
105:                        "SubsetIterator on last position should not have next element",
106:                        subsetIterator.hasNext());
107:            }
108:
109:            public void testConstructorWithoutElements() {
110:                assertEquals("Could not fetch third element",
111:                        subsetIteratorUntilLast.next(), THIRD);
112:
113:                assertTrue("Filled collection should have next element",
114:                        subsetIteratorUntilLast.hasNext());
115:
116:                subsetIteratorUntilLast.remove(); // remove "third element"
117:                assertEquals("Could not fetch fourth element",
118:                        subsetIteratorUntilLast.next(), FOURTH);
119:                assertEquals("Could not fetch last element",
120:                        subsetIteratorUntilLast.next(), LAST);
121:                assertFalse(
122:                        "SubsetIterator on last position should not have next element",
123:                        subsetIteratorUntilLast.hasNext());
124:            }
125:
126:            public void testConstructorWithEmptyCollection() {
127:                Collection coll = new ArrayList();
128:                SubsetIterator i = new SubsetIterator(coll.iterator(), 0, 0);
129:
130:                assertFalse("Empty collection should not have next element", i
131:                        .hasNext());
132:
133:                try {
134:                    i.next();
135:                    fail("Empty collection should raise an exception on next()");
136:                } catch (NoSuchElementException e) {
137:                    // that's what we expect
138:                } catch (Exception e) {
139:                    fail("Empty collection should raise NoSuchElementException on next() and not "
140:                            + e.getClass().getName());
141:                }
142:
143:                try {
144:                    i.remove();
145:                    fail("Empty collection should raise an exception on remove()");
146:                } catch (IllegalStateException e) {
147:                    // that's what we expect
148:                } catch (Exception e) {
149:                    fail("Empty collection should raise IllegalStateException on remove() and not "
150:                            + e.getClass().getName());
151:                }
152:            }
153:
154:            public void testConstructorWithBiggerSubsetThanTheOriginal() {
155:                Collection coll = new ArrayList();
156:
157:                coll.add(FIRST);
158:                coll.add(SECOND);
159:                coll.add(THIRD);
160:                coll.add(FOURTH);
161:                coll.add(LAST);
162:
163:                // a SubsetIterator from "third element" to the end
164:                subsetIterator = new SubsetIterator(coll.iterator(), 2, 100);
165:
166:                assertEquals("Could not fetch third element", subsetIterator
167:                        .next(), THIRD);
168:
169:                assertTrue("Filled collection should have next element",
170:                        subsetIterator.hasNext());
171:                assertEquals("Could not fetch fourth element", subsetIterator
172:                        .next(), FOURTH);
173:                assertEquals("Could not fetch last element", subsetIterator
174:                        .next(), LAST);
175:                assertFalse(
176:                        "SubsetIterator on last position should not have next element",
177:                        subsetIterator.hasNext());
178:            }
179:
180:            public void testHasNext() {
181:                assertTrue("Before first element hasNext() should be true",
182:                        subsetIterator.hasNext());
183:                subsetIterator.next();
184:                assertTrue("On first element hasNext() should be true",
185:                        subsetIterator.hasNext());
186:                subsetIterator.next();
187:                assertFalse("On last element hasNext() should be false",
188:                        subsetIterator.hasNext());
189:            }
190:
191:            public void testNext() {
192:                assertEquals("Could not fetch third element", subsetIterator
193:                        .next(), THIRD);
194:                assertEquals("Could not fetch fourth element", subsetIterator
195:                        .next(), FOURTH);
196:                try {
197:                    subsetIterator.next();
198:                    fail("next() on last element should raise an exception");
199:                } catch (NoSuchElementException e) {
200:                    // that's what we expect
201:                } catch (Exception e) {
202:                    fail("next() on last element should raise NoSuchElementException and not "
203:                            + e.getClass().getName());
204:                }
205:            }
206:
207:            public void testRemove() {
208:                try {
209:                    subsetIterator.remove();
210:                    fail("remove() before first element should raise an exception");
211:                } catch (IllegalStateException e) {
212:                    // that's what we expect
213:                } catch (Exception e) {
214:                    fail("remove() before first element should raise IllegalStateException and not "
215:                            + e.getClass().getName());
216:                }
217:
218:                subsetIterator.next();
219:                subsetIterator.remove();
220:                assertTrue("Before first element hasNext() should be true",
221:                        subsetIterator.hasNext());
222:                subsetIterator.next();
223:                assertFalse("On last element hasNext() should be false",
224:                        subsetIterator.hasNext());
225:                subsetIterator.remove();
226:            }
227:
228:        }
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