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Jetty example source code file (LazyListTest.java)

This example Jetty source code file (LazyListTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Jetty tags/keywords

arraylist, arraylist, integer, iterator, lazylisttest, lazylisttest, list, list, listiterator, object, object, string, testcase, util

The Jetty LazyListTest.java source code

// ========================================================================
// Copyright 2004-2005 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at 
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ========================================================================

package org.mortbay.util;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;

import junit.framework.TestCase;

/**
 * @author gregw
 *
 */
public class LazyListTest extends TestCase
{

    /**
     * Constructor for LazyListTest.
     * @param arg0
     */
    public LazyListTest(String arg0)
    {
        super(arg0);
    }

    /*
     * Test for Object add(Object, Object)
     */
    public void testAddObjectObject()
    {
        Object list=null;
        assertEquals(0,LazyList.size(list));
        
        list=LazyList.add(list, "a");
        assertEquals(1,LazyList.size(list));
        assertEquals("a",LazyList.get(list,0));
        
        list=LazyList.add(list, "b");
        assertEquals(2,LazyList.size(list));
        assertEquals("a",LazyList.get(list,0));
        assertEquals("b",LazyList.get(list,1));

        list=null;
        list=LazyList.add(list, null);
        assertEquals(1,LazyList.size(list));
        assertEquals(null,LazyList.get(list,0));
        
        list="a";
        list=LazyList.add(list, null);
        assertEquals(2,LazyList.size(list));
        assertEquals("a",LazyList.get(list,0));
        assertEquals(null,LazyList.get(list,1));
        
        list=LazyList.add(list, null);
        assertEquals(3,LazyList.size(list));
        assertEquals("a",LazyList.get(list,0));
        assertEquals(null,LazyList.get(list,1));
        assertEquals(null,LazyList.get(list,2)); 

        list=LazyList.add(null,list);
        assertEquals(1,LazyList.size(list));
        assertTrue(LazyList.get(list,0) instanceof List);
    }

    /*
     * Test for Object add(Object, int, Object)
     */
    public void testAddObjectintObject()
    {
        Object list=null;
        list=LazyList.add(list,0,"c");
        list=LazyList.add(list,0,"a");
        list=LazyList.add(list,1,"b");
        list=LazyList.add(list,3,"d");
        
        assertEquals(4,LazyList.size(list));
        assertEquals("a",LazyList.get(list,0));
        assertEquals("b",LazyList.get(list,1));
        assertEquals("c",LazyList.get(list,2));
        assertEquals("d",LazyList.get(list,3));
        
        list=LazyList.add(null, 0, null);
        assertTrue(list instanceof List);
        
        list=LazyList.add(null, 0, new ArrayList());
        assertTrue(list instanceof List);
    }


    public void testAddCollection()
    {
        ArrayList l=new ArrayList();
        l.add("a");
        l.add("b");

        Object list=null;
        list=LazyList.addCollection(list,l);
        list=LazyList.addCollection(list,l);
        
        assertEquals(4,LazyList.size(list));
        assertEquals("a",LazyList.get(list,0));
        assertEquals("b",LazyList.get(list,1));
        assertEquals("a",LazyList.get(list,2));
        assertEquals("b",LazyList.get(list,3));
    }

    public void testEnsureSize()
    {
        assertTrue(LazyList.ensureSize(null,10)!=null);
        
        assertTrue(LazyList.ensureSize("a",10) instanceof ArrayList);

        ArrayList l=new ArrayList();
        l.add("a");
        l.add("b");
        assertTrue(LazyList.ensureSize(l,10)!=l);
        assertTrue(LazyList.ensureSize(l,1)==l);   
    }

    /*
     * Test for Object remove(Object, Object)
     */
    public void testRemoveObjectObject()
    {
        Object list=null;
        
        assertTrue(LazyList.remove(null,"a")==null);
        
        list=LazyList.add(list,"a");
        assertEquals("a",LazyList.remove(list,"z"));
        assertTrue(LazyList.remove(list,"a")==null);
        
        list=LazyList.add(list,"b");
        list=LazyList.remove(list,"b");
        list=LazyList.add(list,"b");
        list=LazyList.add(list,"c");
        list=LazyList.add(list,"d");
        list=LazyList.add(list,"e");
        list=LazyList.remove(list,"a");
        list=LazyList.remove(list,"d");
        list=LazyList.remove(list,"e");
        
        assertEquals(2,LazyList.size(list));
        assertEquals("b",LazyList.get(list,0));
        assertEquals("c",LazyList.get(list,1));

        list=LazyList.remove(list,"b");
        list=LazyList.remove(list,"c");
        assertEquals(null,list);
    }

    /*
     * Test for Object remove(Object, int)
     */
    public void testRemoveObjectint()
    {
        Object list=null;
        assertTrue(LazyList.remove(list,0)==null);
        
        list=LazyList.add(list,"a");
        assertEquals("a",LazyList.remove(list,1));
        assertTrue(LazyList.remove(list,0)==null);
        
        list=LazyList.add(list,"b");
        list=LazyList.remove(list,1);
        list=LazyList.add(list,"b");
        list=LazyList.add(list,"c");
        list=LazyList.add(list,"d");
        list=LazyList.add(list,"e");
        list=LazyList.remove(list,0);
        list=LazyList.remove(list,2);
        list=LazyList.remove(list,2);
        
        assertEquals(2,LazyList.size(list));
        assertEquals("b",LazyList.get(list,0));
        assertEquals("c",LazyList.get(list,1));

        list=LazyList.remove(list,0);
        list=LazyList.remove(list,0);
        assertEquals(null,list);
    }

    /*
     * Test for List getList(Object)
     */
    public void testGetListObject()
    {
        assertEquals(0,LazyList.getList(null).size());
        assertEquals(1,LazyList.getList("a").size());

        ArrayList l=new ArrayList();
        l.add("a");
        l.add("b");
        assertEquals(2,LazyList.getList(l).size());   
    }

    /*
     * Test for List getList(Object, boolean)
     */
    public void testGetListObjectboolean()
    {
        assertEquals(0,LazyList.getList(null,false).size());
        assertEquals(null,LazyList.getList(null,true));
    }

    public void testToStringArray()
    {
        assertEquals(0,LazyList.toStringArray(null).length);
        
        assertEquals(1,LazyList.toStringArray("a").length);
        assertEquals("a",LazyList.toStringArray("a")[0]);
        
        ArrayList l=new ArrayList();
        l.add("a");
        l.add(null);
        l.add(new Integer(2));
        String[] a=LazyList.toStringArray(l);
        
        assertEquals(3,a.length);
        assertEquals("a",a[0]);
        assertEquals(null,a[1]);
        assertEquals("2",a[2]);
        
    }

    public void testSize()
    {
        ArrayList l=new ArrayList();
        l.add("a");
        l.add("b");
        
        assertEquals(0,LazyList.size(null));
        assertEquals(0,LazyList.size(new ArrayList()));
        assertEquals(1,LazyList.size("a"));
        assertEquals(2,LazyList.size(l));
    }

    public void testGet()
    {
        testAddObjectObject();
        
        assertEquals("a",LazyList.get("a",0));
        
        try{
            LazyList.get(null,0);
            assertTrue(false);
        }
        catch(IndexOutOfBoundsException e)
        {
            assertTrue(true);
        }
        
        try{
            LazyList.get("a",1);
            assertTrue(false);
        }
        catch(IndexOutOfBoundsException e)
        {
            assertTrue(true);
        }
    }

    public void testContains()
    {
        ArrayList l=new ArrayList();
        l.add("a");
        l.add("b");
        
        assertFalse(LazyList.contains(null,"z"));
        assertFalse(LazyList.contains("a","z"));
        assertFalse(LazyList.contains(l,"z"));
        
        assertTrue(LazyList.contains("a","a"));
        assertTrue(LazyList.contains(l,"b"));
        
    }



    public void testIterator()
    {
        ArrayList l=new ArrayList();
        l.add("a");
        l.add("b");
        
        assertFalse(LazyList.iterator(null).hasNext());
        
        Iterator i=LazyList.iterator("a");
        assertTrue(i.hasNext());
        assertEquals("a",i.next());
        assertFalse(i.hasNext());
        
        i=LazyList.iterator(l);
        assertTrue(i.hasNext());
        assertEquals("a",i.next());
        assertTrue(i.hasNext());
        assertEquals("b",i.next());
        assertFalse(i.hasNext());
    }

    public void testListIterator()
    {
        ArrayList l=new ArrayList();
        l.add("a");
        l.add("b");
        
        assertFalse(LazyList.listIterator(null).hasNext());
        
        ListIterator i=LazyList.listIterator("a");
        assertTrue(i.hasNext());
        assertFalse(i.hasPrevious());
        assertEquals("a",i.next());
        assertFalse(i.hasNext());
        assertTrue(i.hasPrevious());
        assertEquals("a",i.previous());
        
        i=LazyList.listIterator(l);
        assertTrue(i.hasNext());
        assertFalse(i.hasPrevious());
        assertEquals("a",i.next());
        assertTrue(i.hasNext());
        assertTrue(i.hasPrevious());
        assertEquals("b",i.next());
        assertFalse(i.hasNext());
        assertTrue(i.hasPrevious());
        assertEquals("b",i.previous());
        assertEquals("a",i.previous());
    }
    
    public void testCloneToString()
    {
        ArrayList l=new ArrayList();
        l.add("a");
        l.add("b");
        
        assertEquals("[]",LazyList.toString(LazyList.clone(null)));
        assertEquals("[a]",LazyList.toString(LazyList.clone("a")));
        assertEquals("[a, b]",LazyList.toString(LazyList.clone(l)));
    }

}

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