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/*
* 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.
*/
/* $Id$ */
package org.apache.fop.util;
import java.util.LinkedList;
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import org.apache.fop.layoutmgr.ElementListUtils;
import org.apache.fop.layoutmgr.KnuthBox;
import org.apache.fop.layoutmgr.KnuthElement;
import org.apache.fop.layoutmgr.KnuthGlue;
import org.apache.fop.layoutmgr.KnuthPenalty;
/**
* Test class for ElementListUtils.
*/
public class ElementListUtilsTestCase {
/**
* Tests ElementListUtils.removeLegalBreaks().
* @throws Exception if the test fails
*/
@Test
public void testRemoveElementPenalty1() throws Exception {
LinkedList lst = new LinkedList();
lst.add(new KnuthBox(4000, null, false));
lst.add(new KnuthPenalty(0, 0, false, null, false));
lst.add(new KnuthBox(4000, null, false));
lst.add(new KnuthPenalty(0, 200, false, null, false));
lst.add(new KnuthBox(4000, null, false));
lst.add(new KnuthPenalty(0, 0, false, null, false));
lst.add(new KnuthBox(4000, null, false));
lst.add(new KnuthPenalty(0, KnuthElement.INFINITE, false, null, false));
lst.add(new KnuthGlue(0, Integer.MAX_VALUE, 0, null, false));
lst.add(new KnuthPenalty(0, -KnuthElement.INFINITE, false, null, false));
boolean res = ElementListUtils.removeLegalBreaks(lst, 9000);
assertFalse(res);
assertEquals(KnuthElement.INFINITE, ((KnuthPenalty)lst.get(1)).getPenalty());
assertEquals(KnuthElement.INFINITE, ((KnuthPenalty)lst.get(3)).getPenalty());
assertEquals(0, ((KnuthPenalty)lst.get(5)).getPenalty());
}
/**
* Tests ElementListUtils.removeLegalBreaks().
* @throws Exception if the test fails
*/
@Test
public void testRemoveElementPenalty2() throws Exception {
LinkedList lst = new LinkedList();
lst.add(new KnuthBox(4000, null, false));
lst.add(new KnuthGlue(0, 0, 0, null, false));
lst.add(new KnuthBox(4000, null, false));
lst.add(new KnuthGlue(0, 0, 0, null, false));
lst.add(new KnuthBox(4000, null, false));
lst.add(new KnuthGlue(0, 0, 0, null, false));
lst.add(new KnuthBox(4000, null, false));
lst.add(new KnuthPenalty(0, KnuthElement.INFINITE, false, null, false));
lst.add(new KnuthGlue(0, Integer.MAX_VALUE, 0, null, false));
lst.add(new KnuthPenalty(0, -KnuthElement.INFINITE, false, null, false));
boolean res = ElementListUtils.removeLegalBreaks(lst, 9000);
assertFalse(res);
//Must insert an INFINITE penalty
assertEquals(KnuthElement.INFINITE, ((KnuthPenalty)lst.get(1)).getPenalty());
assertEquals(0, ((KnuthGlue)lst.get(2)).getWidth());
assertEquals(KnuthElement.INFINITE, ((KnuthPenalty)lst.get(4)).getPenalty());
assertEquals(0, ((KnuthGlue)lst.get(5)).getWidth());
assertEquals(0, ((KnuthGlue)lst.get(7)).getWidth());
}
/**
* Tests ElementListUtils.removeLegalBreaksFromEnd().
* @throws Exception if the test fails
*/
@Test
public void testRemoveElementFromEndPenalty1() throws Exception {
LinkedList lst = new LinkedList();
lst.add(new KnuthBox(4000, null, false));
lst.add(new KnuthPenalty(0, 0, false, null, false));
lst.add(new KnuthBox(4000, null, false));
lst.add(new KnuthPenalty(0, 200, false, null, false));
lst.add(new KnuthBox(4000, null, false));
lst.add(new KnuthPenalty(0, 0, false, null, false));
lst.add(new KnuthBox(4000, null, false));
lst.add(new KnuthPenalty(0, KnuthElement.INFINITE, false, null, false));
lst.add(new KnuthGlue(0, Integer.MAX_VALUE, 0, null, false));
lst.add(new KnuthPenalty(0, -KnuthElement.INFINITE, false, null, false));
boolean res = ElementListUtils.removeLegalBreaksFromEnd(lst, 9000);
assertFalse(res);
assertEquals(0, ((KnuthPenalty)lst.get(1)).getPenalty());
assertEquals(KnuthElement.INFINITE, ((KnuthPenalty)lst.get(3)).getPenalty());
assertEquals(KnuthElement.INFINITE, ((KnuthPenalty)lst.get(5)).getPenalty());
}
/**
* Tests ElementListUtils.removeLegalBreaksFromEnd().
* @throws Exception if the test fails
*/
@Test
public void testRemoveElementFromEndPenalty2() throws Exception {
LinkedList lst = new LinkedList();
lst.add(new KnuthBox(4000, null, false));
lst.add(new KnuthPenalty(0, 0, false, null, false));
lst.add(new KnuthBox(4000, null, false));
lst.add(new KnuthPenalty(0, 200, false, null, false));
lst.add(new KnuthBox(4000, null, false));
lst.add(new KnuthGlue(0, 0, 0, null, false));
lst.add(new KnuthBox(4000, null, false));
lst.add(new KnuthPenalty(0, KnuthElement.INFINITE, false, null, false));
lst.add(new KnuthGlue(0, Integer.MAX_VALUE, 0, null, false));
lst.add(new KnuthPenalty(0, -KnuthElement.INFINITE, false, null, false));
boolean res = ElementListUtils.removeLegalBreaksFromEnd(lst, 9000);
assertFalse(res);
//Must insert an INFINITE penalty
assertEquals(0, ((KnuthPenalty)lst.get(1)).getPenalty());
assertEquals(KnuthElement.INFINITE, ((KnuthPenalty)lst.get(3)).getPenalty());
assertEquals(KnuthElement.INFINITE, ((KnuthPenalty)lst.get(5)).getPenalty());
assertEquals(0, ((KnuthGlue)lst.get(6)).getWidth());
}
}
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