/*
* Copyright 2004-2012 the original author or authors.
*
* 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.springframework.binding.collection;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.NoSuchElementException;
import junit.framework.TestCase;
/**
* Test case for {@link CompositeIterator}.
*
* @author Erwin Vervaet
*/
@Deprecated
public class CompositeIteratorTests extends TestCase {
public void testNoIterators() {
CompositeIterator<Object> it = new CompositeIterator<Object>();
assertFalse(it.hasNext());
try {
it.next();
fail();
} catch (NoSuchElementException e) {
// expected
}
}
public void testSingleIterator() {
CompositeIterator<String> it = new CompositeIterator<String>();
it.add(Arrays.asList(new String[] { "0", "1" }).iterator());
for (int i = 0; i < 2; i++) {
assertTrue(it.hasNext());
assertEquals(String.valueOf(i), it.next());
}
assertFalse(it.hasNext());
try {
it.next();
fail();
} catch (NoSuchElementException e) {
// expected
}
}
public void testMultipleIterators() {
CompositeIterator<String> it = new CompositeIterator<String>();
it.add(Arrays.asList(new String[] { "0", "1" }).iterator());
it.add(Arrays.asList(new String[] { "2" }).iterator());
it.add(Arrays.asList(new String[] { "3", "4" }).iterator());
for (int i = 0; i < 5; i++) {
assertTrue(it.hasNext());
assertEquals(String.valueOf(i), it.next());
}
assertFalse(it.hasNext());
try {
it.next();
fail();
} catch (NoSuchElementException e) {
// expected
}
}
public void testInUse() {
List<String> list = Arrays.asList(new String[] { "0", "1" });
CompositeIterator<String> it = new CompositeIterator<String>();
it.add(list.iterator());
it.hasNext();
try {
it.add(list.iterator());
fail();
} catch (IllegalStateException e) {
// expected
}
it = new CompositeIterator<String>();
it.add(list.iterator());
it.next();
try {
it.add(list.iterator());
fail();
} catch (IllegalStateException e) {
// expected
}
}
public void testDuplicateIterators() {
List<String> list = Arrays.asList(new String[] { "0", "1" });
Iterator<String> iterator = list.iterator();
CompositeIterator<String> it = new CompositeIterator<String>();
it.add(iterator);
it.add(list.iterator());
try {
it.add(iterator);
fail();
} catch (IllegalArgumentException e) {
// expected
}
}
}