/*
* 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.wicket.extensions.markup.html.repeater.tree.table;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import org.apache.wicket.extensions.markup.html.repeater.tree.ITreeProvider;
import org.apache.wicket.model.IModel;
import org.apache.wicket.model.Model;
import org.junit.Assert;
import org.junit.Test;
/**
* Test for {@link TreeDataProvider}.
*/
public class TreeDataProviderTest extends Assert
{
/**
* Test iterator.
*/
@Test
public void iterator()
{
TreeDataProvider<String> provider = new TreeDataProvider<String>(new TestProvider())
{
private static final long serialVersionUID = 1L;
@Override
protected boolean iterateChildren(String object)
{
return !object.startsWith("B");
}
};
assertEquals(3 + 2 * (3 + 3 * 3), provider.size());
Iterator<? extends String> iterator = provider.iterator(0, Integer.MAX_VALUE);
assertEquals("A", iterator.next());
assertEquals("AA", iterator.next());
assertEquals("AAA", iterator.next());
assertEquals("AAB", iterator.next());
assertEquals("AAC", iterator.next());
assertEquals("AB", iterator.next());
assertEquals("ABA", iterator.next());
assertEquals("ABB", iterator.next());
assertEquals("ABC", iterator.next());
assertEquals("AC", iterator.next());
assertEquals("ACA", iterator.next());
assertEquals("ACB", iterator.next());
assertEquals("ACC", iterator.next());
assertEquals("B", iterator.next());
// note: B is not iterated (i.e. collapsed)!
assertEquals("C", iterator.next());
assertEquals("CA", iterator.next());
assertEquals("CAA", iterator.next());
assertEquals("CAB", iterator.next());
assertEquals("CAC", iterator.next());
assertEquals("CB", iterator.next());
assertEquals("CBA", iterator.next());
assertEquals("CBB", iterator.next());
assertEquals("CBC", iterator.next());
assertEquals("CC", iterator.next());
assertEquals("CCA", iterator.next());
assertEquals("CCB", iterator.next());
assertEquals("CCC", iterator.next());
assertFalse(iterator.hasNext());
}
private static class TestProvider implements ITreeProvider<String>
{
private static final long serialVersionUID = 1L;
@Override
public Iterator<? extends String> getRoots()
{
return Arrays.asList("A", "B", "C").iterator();
}
@Override
public Iterator<? extends String> getChildren(String object)
{
List<String> children = new ArrayList<>();
if (hasChildren(object))
{
for (int i = 0; i < 3; i++)
{
children.add(object + (char)('A' + i));
}
}
return children.iterator();
}
@Override
public boolean hasChildren(String object)
{
return object.length() < 3;
}
@Override
public IModel<String> model(String object)
{
return Model.of(object);
}
@Override
public void detach()
{
}
}
}