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Struts example source code file (SubsetIteratorTagTest.java)

This example Struts source code file (SubsetIteratorTagTest.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 - Struts tags/keywords

abstracttagtest, array, as, decider, exception, integer, integer, iterator, iterator, list, list, source, subsetiteratortag, subsetiteratortag, util

The Struts SubsetIteratorTagTest.java source code

/*
 * $Id: SubsetIteratorTagTest.java 651946 2008-04-27 13:41:38Z apetrelli $
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.struts2.views.jsp;

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

import org.apache.struts2.util.SubsetIteratorFilter.Decider;
import org.apache.struts2.views.jsp.iterator.SubsetIteratorTag;

import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionSupport;


/**
 * Test case for SubsetIteratorTag.
 *
 */
public class SubsetIteratorTagTest extends AbstractTagTest {


    public void testBasic() throws Exception {
        { // List as Source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myList");

            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();

            assertEquals(subsetIterator.next(), new Integer(1));
            assertEquals(subsetIterator.next(), new Integer(2));
            assertEquals(subsetIterator.next(), new Integer(3));
            assertEquals(subsetIterator.next(), new Integer(4));
            assertEquals(subsetIterator.next(), new Integer(5));
        }

        { // Array as Source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myArray");

            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();

            assertEquals(subsetIterator.next(), new Integer(1));
            assertEquals(subsetIterator.next(), new Integer(2));
            assertEquals(subsetIterator.next(), new Integer(3));
            assertEquals(subsetIterator.next(), new Integer(4));
            assertEquals(subsetIterator.next(), new Integer(5));
        }
    }

    public void testWithStartAttribute() throws Exception {
        { // List as source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myList");
            tag.setStart("3");

            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();

            assertEquals(subsetIterator.next(), new Integer(4));
            assertEquals(subsetIterator.next(), new Integer(5));
        }

        { // Array as source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myArray");
            tag.setStart("3");

            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();

            assertEquals(subsetIterator.next(), new Integer(4));
            assertEquals(subsetIterator.next(), new Integer(5));
        }
    }

    public void testWithCountAttribute() throws Exception {
        { // List as source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myList");
            tag.setCount("3");

            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();

            assertEquals(subsetIterator.next(), new Integer(1));
            assertEquals(subsetIterator.next(), new Integer(2));
            assertEquals(subsetIterator.next(), new Integer(3));
        }

        { // array as source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myArray");
            tag.setCount("3");

            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();

            assertEquals(subsetIterator.next(), new Integer(1));
            assertEquals(subsetIterator.next(), new Integer(2));
            assertEquals(subsetIterator.next(), new Integer(3));
        }
    }

    public void testWIthStartAndCountAttribute() throws Exception {
        { // List as source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myList");
            tag.setStart("3");
            tag.setCount("3");

            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();

            assertEquals(subsetIterator.next(), new Integer("4"));
            assertEquals(subsetIterator.next(), new Integer("5"));
        }

        {   // Array as source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myArray");
            tag.setStart("3");
            tag.setCount("3");

            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();

            assertEquals(subsetIterator.next(), new Integer("4"));
            assertEquals(subsetIterator.next(), new Integer("5"));
        }
    }

    public void testWithId() throws Exception {
        {   // List as Source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myList");
            tag.setId("myPageContextId1");

            tag.doStartTag();
            Iterator subsetIterator1 = (Iterator) stack.findValue("top");
            tag.doEndTag();

            Iterator subsetIterator2 = (Iterator) pageContext.getAttribute("myPageContextId1");

            assertNotNull(subsetIterator1);
            assertNotNull(subsetIterator2);
            assertEquals(subsetIterator1, subsetIterator2);
            assertEquals(subsetIterator2.next(), new Integer(1));
            assertEquals(subsetIterator2.next(), new Integer(2));
            assertEquals(subsetIterator2.next(), new Integer(3));
            assertEquals(subsetIterator2.next(), new Integer(4));
            assertEquals(subsetIterator2.next(), new Integer(5));
        }

        {   // Array as source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myArray");
            tag.setId("myPageContextId2");

            tag.doStartTag();
            Iterator subsetIterator1 = (Iterator) stack.findValue("top");
            tag.doEndTag();

            Iterator subsetIterator2 = (Iterator) pageContext.getAttribute("myPageContextId2");

            assertNotNull(subsetIterator1);
            assertNotNull(subsetIterator2);
            assertEquals(subsetIterator1, subsetIterator2);
            assertEquals(subsetIterator2.next(), new Integer(1));
            assertEquals(subsetIterator2.next(), new Integer(2));
            assertEquals(subsetIterator2.next(), new Integer(3));
            assertEquals(subsetIterator2.next(), new Integer(4));
            assertEquals(subsetIterator2.next(), new Integer(5));
        }
    }

    public void testWithDecider() throws Exception {
        {   // List as source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myList");
            tag.setDecider("myDecider");

            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();

            assertEquals(subsetIterator.next(), new Integer(2));
            assertEquals(subsetIterator.next(), new Integer(4));
        }

        {   // Array As source
            SubsetIteratorTag tag = new SubsetIteratorTag();
            tag.setPageContext(pageContext);
            tag.setSource("myList");
            tag.setDecider("myDecider");

            tag.doStartTag();
            Iterator subsetIterator = (Iterator) stack.findValue("top");
            tag.doEndTag();

            assertEquals(subsetIterator.next(), new Integer(2));
            assertEquals(subsetIterator.next(), new Integer(4));
        }
    }



    public Action getAction() {
        return new ActionSupport() {
            public List getMyList() {
                List l = new ArrayList();
                l.add(new Integer(1));
                l.add(new Integer(2));
                l.add(new Integer(3));
                l.add(new Integer(4));
                l.add(new Integer(5));
                return l;
            }

            public Integer[] getMyArray() {
                Integer[] integers = new Integer[5];
                integers[0] = new Integer(1);
                integers[1] = new Integer(2);
                integers[2] = new Integer(3);
                integers[3] = new Integer(4);
                integers[4] = new Integer(5);
                return integers;
            }

            public Decider getMyDecider() {
                return new Decider() {
                    public boolean decide(Object element) throws Exception {
                        int integer = ((Integer)element).intValue();
                        return (((integer % 2) == 0)?true:false);
                    }
                };
            }
        };
    }
}

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