/*
* 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.aries.blueprint.utils;
import java.util.Iterator;
import junit.framework.TestCase;
public class DynamicCollectionTest extends TestCase {
protected static final Object O0 = new Object();
protected static final Object O1 = new Object();
protected static final Object O2 = new Object();
protected static final Object O3 = new Object();
protected DynamicCollection<Object> collection;
protected void setUp() {
collection = new DynamicCollection<Object>();
}
public void testAddRemove() throws Exception {
assertEquals(0, collection.size());
assertTrue(collection.isEmpty());
collection.add(O0);
assertEquals(1, collection.size());
assertFalse(collection.isEmpty());
assertTrue(collection.contains(O0));
assertFalse(collection.contains(O1));
collection.clear();
assertEquals(0, collection.size());
collection.add(O0);
collection.add(O0);
assertEquals(2, collection.size());
assertTrue(collection.remove(O0));
assertEquals(1, collection.size());
assertTrue(collection.remove(O0));
assertEquals(0, collection.size());
}
public void testSimpleIterator() throws Exception {
collection.add(O0);
Iterator iterator = collection.iterator();
assertTrue(iterator.hasNext());
assertEquals(O0, iterator.next());
assertFalse(iterator.hasNext());
}
public void testAddWhileIterating() throws Exception {
Iterator iterator = collection.iterator();
assertFalse(iterator.hasNext());
collection.add(O0);
assertTrue(iterator.hasNext());
assertEquals(O0, iterator.next());
assertFalse(iterator.hasNext());
}
public void testRemoveElementWhileIterating() throws Exception {
collection.add(O0);
collection.add(O1);
Iterator iterator = collection.iterator();
assertTrue(iterator.hasNext());
collection.remove(O0);
assertEquals(O0, iterator.next());
assertTrue(iterator.hasNext());
assertEquals(O1, iterator.next());
assertFalse(iterator.hasNext());
}
public void testRemoveElementAfterWhileIterating() throws Exception {
collection.add(O0);
collection.add(O1);
Iterator iterator = collection.iterator();
assertTrue(iterator.hasNext());
assertEquals(O0, iterator.next());
collection.remove(O1);
assertFalse(iterator.hasNext());
}
public void testRemoveElementBeforeWhileIterating() throws Exception {
collection.add(O0);
collection.add(O1);
Iterator iterator = collection.iterator();
assertTrue(iterator.hasNext());
assertEquals(O0, iterator.next());
collection.remove(O0);
assertTrue(iterator.hasNext());
assertEquals(O1, iterator.next());
assertFalse(iterator.hasNext());
}
}