/*
* Copyright 2002-2007 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.util;
import java.util.LinkedList;
import junit.framework.TestCase;
import org.springframework.beans.TestBean;
/**
* @author Rob Harrop
* @author Juergen Hoeller
*/
public class AutoPopulatingListTests extends TestCase {
public void testWithClass() throws Exception {
doTestWithClass(new AutoPopulatingList(TestBean.class));
}
public void testWithClassAndUserSuppliedBackingList() throws Exception {
doTestWithClass(new AutoPopulatingList(new LinkedList(), TestBean.class));
}
public void testWithElementFactory() throws Exception {
doTestWithElementFactory(new AutoPopulatingList(new MockElementFactory()));
}
public void testWithElementFactoryAndUserSuppliedBackingList() throws Exception {
doTestWithElementFactory(new AutoPopulatingList(new LinkedList(), new MockElementFactory()));
}
private void doTestWithClass(AutoPopulatingList list) {
Object lastElement = null;
for (int x = 0; x < 10; x++) {
Object element = list.get(x);
assertNotNull("Element is null", list.get(x));
assertTrue("Element is incorrect type", element instanceof TestBean);
assertNotSame(lastElement, element);
lastElement = element;
}
String helloWorld = "Hello World!";
list.add(10, null);
list.add(11, helloWorld);
assertEquals(helloWorld, list.get(11));
assertTrue(list.get(10) instanceof TestBean);
assertTrue(list.get(12) instanceof TestBean);
assertTrue(list.get(13) instanceof TestBean);
assertTrue(list.get(20) instanceof TestBean);
}
private void doTestWithElementFactory(AutoPopulatingList list) {
doTestWithClass(list);
for(int x = 0; x < list.size(); x++) {
Object element = list.get(x);
if(element instanceof TestBean) {
assertEquals(x, ((TestBean) element).getAge());
}
}
}
public void testSerialization() throws Exception {
AutoPopulatingList list = new AutoPopulatingList(TestBean.class);
assertEquals(list, SerializationTestUtils.serializeAndDeserialize(list));
}
private static class MockElementFactory implements AutoPopulatingList.ElementFactory {
public Object createElement(int index) {
TestBean bean = new TestBean();
bean.setAge(index);
return bean;
}
}
}