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/*******************************************************************************
* Copyright (c) 2005, 2009 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0, which accompanies this distribution
* and is available at http://www.eclipse.org/legal/epl-v10.html.
*
* Contributors:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.utility.tests.internal.iterators;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import org.eclipse.jpt.utility.internal.iterators.CompositeListIterator;
@SuppressWarnings("nls")
public class CompositeListIteratorTests extends ReadOnlyCompositeListIteratorTests {
public CompositeListIteratorTests(String name) {
super(name);
}
@Override
public void testRemove() {
super.testRemove();
List<String> list1 = this.buildList1();
List<String> list2 = this.buildList2();
List<String> list3 = this.buildList3();
Object firstElement3 = list3.get(0);
List<Iterator<String>> list = new ArrayList<Iterator<String>>();
list.add(list1.listIterator());
list.add(list2.listIterator());
list.add(list3.listIterator());
ListIterator<String> stream = (ListIterator<String>) this.buildCompositeIterator(list.listIterator());
// position to end of stream
while (stream.hasNext()) {
stream.next();
}
while (stream.hasPrevious()) {
Object previous = stream.previous();
if (previous.equals("333")) {
stream.remove();
}
// test special case - where we are between iterators
if (previous.equals(firstElement3)) {
// this will trigger the next iterator to be loaded
stream.hasPrevious();
// now try to remove from the previous iterator
stream.remove();
}
}
stream.remove();
assertEquals("nothing removed from collection 1", this.buildList1().size() - 2, list1.size());
assertFalse("element still in collection 1", list1.contains("1"));
assertFalse("element still in collection 1", list1.contains("333"));
assertEquals("nothing removed from collection 3", this.buildList3().size() - 1, list3.size());
assertFalse("first element still in collection 3", list3.contains(firstElement3));
assertTrue("wrong element removed from collection 3", list3.contains("666666"));
}
public void testAdd() {
List<String> list1 = this.buildList1();
Object lastElement1 = list1.get(list1.size() - 1);
List<String> list2 = this.buildList2();
List<String> list3 = this.buildList3();
Object firstElement3 = list3.get(0);
List<Iterator<String>> list = new ArrayList<Iterator<String>>();
list.add(list1.listIterator());
list.add(list2.listIterator());
list.add(list3.listIterator());
ListIterator<String> stream = (ListIterator<String>) this.buildCompositeIterator(list.listIterator());
while (stream.hasNext()) {
Object next = stream.next();
if (next.equals("333")) {
stream.add("3.5");
}
// test special case - where we are between iterators
if (next.equals(lastElement1)) {
// this will trigger the next iterator to be loaded
stream.hasNext();
// now try to add to the iterator
stream.add("something in 3");
}
}
stream.add("finale");
boolean checkForFinale = true;
while (stream.hasPrevious()) {
Object previous = stream.previous();
if (checkForFinale) {
checkForFinale = false;
assertEquals("added element dropped", "finale", previous);
}
if (previous.equals("333")) {
stream.add("2.5");
}
// test special case - where we are between iterators
if (previous.equals(firstElement3)) {
// this will trigger the next iterator to be loaded
stream.hasPrevious();
// now try to remove from the previous iterator
stream.add("old start of 3");
}
}
stream.add("prelude");
assertEquals("added element dropped", "prelude", stream.previous());
assertEquals("elements not added to collection 1", this.buildList1().size() + 3, list1.size());
assertEquals("element not added to collection 1", "prelude", list1.get(0));
assertEquals("element not added to collection 1", "2.5", list1.get(3));
assertEquals("element not added to collection 1", "3.5", list1.get(5));
assertEquals("elements not added to collection 3", this.buildList3().size() + 3, list3.size());
assertEquals("element not added to collection 3", "something in 3", list3.get(0));
assertEquals("element not added to collection 3", "old start of 3", list3.get(1));
assertEquals("element not added to collection 3", "finale", list3.get(list3.size() - 1));
// add to the front
stream = (ListIterator<String>) this.buildCompositeIterator();
stream.add("blah");
assertFalse("added element should be placed BEFORE the \"cursor\"", stream.next().equals("blah"));
stream = (ListIterator<String>) this.buildCompositeIterator();
stream.add("blah");
assertTrue("added element should be placed BEFORE the \"cursor\"", stream.previous().equals("blah"));
stream = (ListIterator<String>) this.buildCompositeIterator();
while (stream.hasNext()) {
stream.next();
}
while (stream.hasPrevious()) {
stream.previous();
}
stream.add("blah");
assertFalse("added element should be placed BEFORE the \"cursor\"", stream.next().equals("blah"));
stream = (ListIterator<String>) this.buildCompositeIterator();
while (stream.hasNext()) {
stream.next();
}
while (stream.hasPrevious()) {
stream.previous();
}
stream.add("blah");
assertTrue("added element should be placed BEFORE the \"cursor\"", stream.previous().equals("blah"));
// add to the middle
stream = (ListIterator<String>) this.buildCompositeIterator();
stream.next();
stream.add("blah");
assertFalse("added element should be placed BEFORE the \"cursor\"", stream.next().equals("blah"));
stream = (ListIterator<String>) this.buildCompositeIterator();
stream.next();
stream.add("blah");
assertTrue("added element should be placed BEFORE the \"cursor\"", stream.previous().equals("blah"));
stream = (ListIterator<String>) this.buildCompositeIterator();
while (stream.hasNext()) {
stream.next();
}
stream.previous();
stream.add("blah");
assertFalse("added element should be placed BEFORE the \"cursor\"", stream.next().equals("blah"));
stream = (ListIterator<String>) this.buildCompositeIterator();
while (stream.hasNext()) {
stream.next();
}
stream.previous();
stream.add("blah");
assertTrue("added element should be placed BEFORE the \"cursor\"", stream.previous().equals("blah"));
// add to the end
stream = (ListIterator<String>) this.buildCompositeIterator();
while (stream.hasNext()) {
stream.next();
}
stream.add("blah");
assertFalse("added element should be placed BEFORE the \"cursor\"", stream.hasNext());
stream = (ListIterator<String>) this.buildCompositeIterator();
while (stream.hasNext()) {
stream.next();
}
stream.add("blah");
assertTrue("added element should be placed BEFORE the \"cursor\"", stream.previous().equals("blah"));
}
public void testSet() {
List<String> list1 = this.buildList1();
Object lastElement1 = list1.get(list1.size() - 1);
List<String> list2 = this.buildList2();
List<String> list3 = this.buildList3();
Object firstElement3 = list3.get(0);
List<Iterator<String>> list = new ArrayList<Iterator<String>>();
list.add(list1.listIterator());
list.add(list2.listIterator());
list.add(list3.listIterator());
ListIterator<String> stream = (ListIterator<String>) this.buildCompositeIterator(list.listIterator());
// position to end of stream
while (stream.hasNext()) {
Object next = stream.next();
if (next.equals("333")) {
stream.set("333a");
}
// test special case - where we are between iterators
if (next.equals(lastElement1)) {
// this will trigger the next iterator to be loaded
stream.hasNext();
// now try to remove from the previous iterator
stream.set("end of 1");
}
}
while (stream.hasPrevious()) {
Object previous = stream.previous();
if (previous.equals("22")) {
stream.set("22a");
}
// test special case - where we are between iterators
if (previous.equals(firstElement3)) {
// this will trigger the next iterator to be loaded
stream.hasPrevious();
// now try to remove from the previous iterator
stream.set("start of 3");
}
}
assertEquals("element(s) added to collection 1", this.buildList1().size(), list1.size());
assertEquals("element not set in collection 1", "22a", list1.get(1));
assertFalse("element not set in collection 1", list1.contains("22"));
assertEquals("element not set in collection 1", "333a", list1.get(2));
assertFalse("element not set in collection 1", list1.contains("333"));
assertEquals("element not set in collection 1", "end of 1", list1.get(list1.size() - 1));
assertFalse("element not set in collection 1", list1.contains(lastElement1));
assertEquals("element(s) added to collection 3", this.buildList3().size(), list3.size());
assertEquals("element not set in collection 3", "start of 3", list3.get(0));
assertFalse("element not set in collection 3", list3.contains(firstElement3));
}
@Override
public void testNextIndexPreviousIndex() {
int i = 0;
ListIterator<String> stream = (ListIterator<String>) this.buildCompositeIterator();
assertEquals(i, stream.nextIndex());
assertEquals(i - 1, stream.previousIndex());
while (stream.hasNext()) {
Object next = stream.next();
i++;
if (next.equals("333")) {
stream.remove();
i--;
}
if (next.equals("7777777")) {
stream.add("7.5");
i++;
}
assertEquals(i, stream.nextIndex());
assertEquals(i - 1, stream.previousIndex());
}
assertEquals("index is corrupt", 8, i);
assertEquals(i, stream.nextIndex());
assertEquals(i - 1, stream.previousIndex());
while (stream.hasPrevious()) {
Object previous = stream.previous();
i--;
if (previous.equals("666666")) {
stream.remove();
// removing a previous element, does not change the cursor
}
if (previous.equals("22")) {
stream.add("1.5");
i++;
}
assertEquals(i, stream.nextIndex());
assertEquals(i - 1, stream.previousIndex());
}
assertEquals("index is corrupt", 0, i);
}
@Override
public void testIllegalStateException() {
this.verifyIllegalStateException();
}
@Override
public void testEmptyIllegalStateException1() {
this.verifyEmptyIllegalStateException1();
}
@Override
public void testEmptyIllegalStateException2() {
this.verifyEmptyIllegalStateException2();
}
// unchecked so we can override the unchecked method in superclass
@Override
@SuppressWarnings("unchecked")
Iterator<String> buildCompositeIterator(Iterator iterators) {
return new CompositeListIterator<String>((ListIterator<ListIterator<String>>) iterators);
}
@Override
@SuppressWarnings("unchecked")
Iterator<String> buildCompositeIterator2() {
return new CompositeListIterator<String>(this.buildIterator1(), this.buildIterator2(), this.buildIterator3());
}
@Override
@SuppressWarnings("unchecked")
Iterator<String> buildCompositeIterator3() {
return new CompositeListIterator<String>(new ListIterator[] { this.buildIterator1(), this.buildIterator2(), this.buildIterator3() });
}
@Override
ListIterator<String> buildCompositeListIterator(String string, ListIterator<String> iterator) {
return new CompositeListIterator<String>(string, iterator);
}
}
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