morgand 02/04/08 16:39:01
Added: collections/src/test/org/apache/commons/collections
TestIteratorChain.java
Log:
An IteratorChain is a sequence of Iterators called until all Iterators are
exhausted
Revision Changes Path
1.1
jakarta-commons/collections/src/test/org/apache/commons/collections/TestIteratorChain.java
Index: TestIteratorChain.java
===================================================================
/*
* $Header:
/home/cvs/jakarta-commons/collections/src/test/org/apache/commons/collections/TestIteratorChain.java,v
1.1 2002/04/08 23:39:01 morgand Exp $
* $Revision: 1.1 $
* $Date: 2002/04/08 23:39:01 $
*
* ====================================================================
*
* 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 [EMAIL PROTECTED]
*
* 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;
import junit.framework.*;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.NoSuchElementException;
/**
* Tests the ArrayIterator to ensure that the next() method will actually
* perform the iteration rather than the hasNext() method.
* The code of this test was supplied by Mauricio S. Moura
*
* @author James Strachan
* @author Mauricio S. Moura
* @author Morgan Delagrange
* @version $Id: TestIteratorChain.java,v 1.1 2002/04/08 23:39:01 morgand Exp $
*/
public class TestIteratorChain extends TestIterator {
protected String[] testArray = {
"One", "Two", "Three", "Four", "Five", "Six"
};
protected List list1 = null;
protected List list2 = null;
protected List list3 = null;
public static Test suite() {
return new TestSuite(TestIteratorChain.class);
}
public TestIteratorChain(String testName) {
super(testName);
}
public void setUp() {
list1 = new ArrayList();
list1.add("One");
list1.add("Two");
list1.add("Three");
list2 = new ArrayList();
list2.add("Four");
list3 = new ArrayList();
list3.add("Five");
list3.add("Six");
}
public Iterator makeEmptyIterator() {
ArrayList list = new ArrayList();
return new IteratorChain(list.iterator());
}
public Iterator makeFullIterator() {
IteratorChain chain = new IteratorChain();
Iterator i = list1.iterator();
chain.addIterator(list1.iterator());
chain.addIterator(list2.iterator());
chain.addIterator(list3.iterator());
return chain;
}
/**
* Return a new, empty {@link Object} to used for testing.
*/
public Object makeObject() {
return makeFullIterator();
}
public void testIterator() {
Iterator iter = (Iterator) makeFullIterator();
for ( int i = 0; i < testArray.length; i++ ) {
Object testValue = testArray[i];
Object iterValue = iter.next();
assertEquals( "Iteration value is correct", testValue, iterValue );
}
assertTrue("Iterator should now be empty", ! iter.hasNext() );
try {
Object testValue = iter.next();
} catch (Exception e) {
assertTrue("NoSuchElementException must be thrown",
e.getClass().equals((new
NoSuchElementException()).getClass()));
}
}
public void testRemove() {
Iterator iter = (Iterator) makeFullIterator();
try {
iter.remove();
fail("Calling remove before the first call to next() should throw an
exception");
} catch (IllegalStateException e) {
}
for ( int i = 0; i < testArray.length; i++ ) {
Object testValue = testArray[i];
Object iterValue = iter.next();
assertEquals( "Iteration value is correct", testValue, iterValue );
if (! iterValue.equals("Four")) {
iter.remove();
}
}
assertTrue("List is empty",list1.size() == 0);
assertTrue("List is empty",list2.size() == 1);
assertTrue("List is empty",list3.size() == 0);
}
}
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