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From scolebou...@apache.org
Subject cvs commit: jakarta-commons/collections/src/test/org/apache/commons/collections/iterators TestLoopingIterator.java TestAll.java
Date Thu, 21 Nov 2002 23:09:26 GMT
scolebourne    2002/11/21 15:09:26

  Modified:    collections/src/test/org/apache/commons/collections/iterators
                        TestAll.java
  Added:       collections/src/test/org/apache/commons/collections/iterators
                        TestLoopingIterator.java
  Log:
  Add LoopingIterator, from Jonathan Carlson
  
  Revision  Changes    Path
  1.3       +5 -4      jakarta-commons/collections/src/test/org/apache/commons/collections/iterators/TestAll.java
  
  Index: TestAll.java
  ===================================================================
  RCS file: /home/cvs/jakarta-commons/collections/src/test/org/apache/commons/collections/iterators/TestAll.java,v
  retrieving revision 1.2
  retrieving revision 1.3
  diff -u -r1.2 -r1.3
  --- TestAll.java	17 Aug 2002 11:39:16 -0000	1.2
  +++ TestAll.java	21 Nov 2002 23:09:26 -0000	1.3
  @@ -84,6 +84,7 @@
           suite.addTest(TestFilterListIterator.suite());
           suite.addTest(TestIteratorChain.suite());
           suite.addTest(TestListIteratorWrapper.suite());
  +        suite.addTest(TestLoopingIterator.suite());
           suite.addTest(TestSingletonIterator.suite());
           suite.addTest(TestSingletonListIterator.suite());
           suite.addTest(TestUniqueFilterIterator.suite());
  
  
  
  1.1                  jakarta-commons/collections/src/test/org/apache/commons/collections/iterators/TestLoopingIterator.java
  
  Index: TestLoopingIterator.java
  ===================================================================
  /*
   * $Header: /home/cvs/jakarta-commons/collections/src/test/org/apache/commons/collections/iterators/TestLoopingIterator.java,v
1.1 2002/11/21 23:09:26 scolebourne Exp $
   * $Revision: 1.1 $
   * $Date: 2002/11/21 23:09:26 $
   *
   * ====================================================================
   *
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 1999-2001 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Commons", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  package org.apache.commons.collections.iterators;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.List;
  import java.util.NoSuchElementException;
  
  import junit.framework.Test;
  import junit.framework.TestCase;
  import junit.framework.TestSuite;
  /**
   * Tests the LoopingIterator class using jUnit.
   * 
   * @author <a href="mailto:joncrlsn@users.sf.net">Jonathan Carlson</a>
   * @author Stephen Colebourne
   */
  public class TestLoopingIterator extends TestCase {
  
      public TestLoopingIterator(String testName) {
          super(testName);
      }
  
      public static Test suite() {
          return new TestSuite(TestLoopingIterator.class);
      }
  
      /**
       * Tests constructor exception.
       */
      public void testConstructorEx() throws Exception {
          try {
              new LoopingIterator(null);
              fail();
          } catch (NullPointerException ex) {
          }
      }
      
      /**
       * Tests whether an empty looping iterator works as designed.
       * @throws Exception  If something unexpected occurs.
       */
      public void testLooping0() throws Exception {
          List list = new ArrayList();
          LoopingIterator loop = new LoopingIterator(list);
          assertTrue("hasNext should return false", loop.hasNext() == false);
  
          try {
              loop.next();
              fail("NoSuchElementException was not thrown during next() call.");
          } catch (NoSuchElementException ex) {
          }
      }
  
      /**
       * Tests whether a populated looping iterator works as designed.
       * @throws Exception  If something unexpected occurs.
       */
      public void testLooping1() throws Exception {
          List list = new ArrayList(Arrays.asList(new String[] { "a" }));
          LoopingIterator loop = new LoopingIterator(list);
  
          assertTrue("1st hasNext should return true", loop.hasNext());
          assertEquals("a", loop.next());
  
          assertTrue("2nd hasNext should return true", loop.hasNext());
          assertEquals("a", loop.next());
  
          assertTrue("3rd hasNext should return true", loop.hasNext());
          assertEquals("a", loop.next());
  
      }
  
      /**
       * Tests whether a populated looping iterator works as designed.
       * @throws Exception  If something unexpected occurs.
       */
      public void testLooping2() throws Exception {
          List list = new ArrayList(Arrays.asList(new String[] { "a", "b" }));
          LoopingIterator loop = new LoopingIterator(list);
  
          assertTrue("1st hasNext should return true", loop.hasNext());
          assertEquals("a", loop.next());
  
          assertTrue("2nd hasNext should return true", loop.hasNext());
          assertEquals("b", loop.next());
  
          assertTrue("3rd hasNext should return true", loop.hasNext());
          assertEquals("a", loop.next());
  
      }
  
      /**
       * Tests whether a populated looping iterator works as designed.
       * @throws Exception  If something unexpected occurs.
       */
      public void testLooping3() throws Exception {
          List list = new ArrayList(Arrays.asList(new String[] { "a", "b", "c" }));
          LoopingIterator loop = new LoopingIterator(list);
  
          assertTrue("1st hasNext should return true", loop.hasNext());
          assertEquals("a", loop.next());
  
          assertTrue("2nd hasNext should return true", loop.hasNext());
          assertEquals("b", loop.next());
  
          assertTrue("3rd hasNext should return true", loop.hasNext());
          assertEquals("c", loop.next());
  
          assertTrue("4th hasNext should return true", loop.hasNext());
          assertEquals("a", loop.next());
  
      }
  
      /**
       * Tests the remove() method on a LoopingIterator wrapped ArrayList.
       * @throws Exception  If something unexpected occurs.
       */
      public void testRemoving1() throws Exception {
          List list = new ArrayList(Arrays.asList(new String[] { "a", "b", "c" }));
          LoopingIterator loop = new LoopingIterator(list);
          assertEquals("list should have 3 elements.", 3, list.size());
  
          assertTrue("1st hasNext should return true", loop.hasNext());
          assertEquals("a", loop.next());
          loop.remove();  // removes a
          assertEquals("list should have 2 elements.", 2, list.size());
  
          assertTrue("2nd hasNext should return true", loop.hasNext());
          assertEquals("b", loop.next());
          loop.remove();  // removes b
          assertEquals("list should have 1 elements.", 1, list.size());
  
          assertTrue("3rd hasNext should return true", loop.hasNext());
          assertEquals("c", loop.next());
          loop.remove();  // removes c
          assertEquals("list should have 0 elements.", 0, list.size());
  
          assertTrue("4th hasNext should return false", loop.hasNext() == false);
          try {
              loop.next();
              fail("Expected NoSuchElementException to be thrown.");
          } catch (NoSuchElementException ex) {
          }
      }
  
      /**
       * Tests the reset() method on a LoopingIterator wrapped ArrayList.
       * @throws Exception  If something unexpected occurs.
       */
      public void testReset() throws Exception {
          List list = new ArrayList(Arrays.asList(new String[] { "a", "b", "c" }));
          LoopingIterator loop = new LoopingIterator(list);
  
          assertEquals("a", loop.next());
          assertEquals("b", loop.next());
          loop.reset();
          assertEquals("a", loop.next());
          loop.reset();
          assertEquals("a", loop.next());
          assertEquals("b", loop.next());
          assertEquals("c", loop.next());
          loop.reset();
          assertEquals("a", loop.next());
          assertEquals("b", loop.next());
          assertEquals("c", loop.next());
      }
      
      /**
       * Tests the size() method on a LoopingIterator wrapped ArrayList.
       * @throws Exception  If something unexpected occurs.
       */
      public void testSize() throws Exception {
          List list = new ArrayList(Arrays.asList(new String[] { "a", "b", "c" }));
          LoopingIterator loop = new LoopingIterator(list);
  
          assertEquals(3, loop.size());
          loop.next();
          loop.next();
          assertEquals(3, loop.size());
          loop.reset();
          assertEquals(3, loop.size());
          loop.next();
          loop.remove();
          assertEquals(2, loop.size());
      }
  
  }
  
  
  

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