/*
* 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.util.collections;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;
import java.util.NoSuchElementException;
import java.util.Set;
import org.junit.Assert;
import org.junit.Test;
/**
* @author almaw
*/
public class MicroMapTest extends Assert
{
private static final Object FOO = new Object();
private static final Object BAR = new Object();
/**
* Basic test for keySet(), entrySet() and values().
*/
@Test
public void microMap()
{
MicroMap<Object, Object> m = new MicroMap<>();
m.put(FOO, BAR);
// Test .keySet();
Set<Object> s = m.keySet();
assertEquals(1, m.size());
assertEquals(1, s.size());
Iterator<?> i = s.iterator();
assertTrue(i.hasNext());
Object key = i.next();
assertEquals(FOO, key);
assertFalse(i.hasNext());
try
{
i.next();
fail("Expected i.next() to fail with NoSuchElementException");
}
catch (NoSuchElementException e)
{
// Swallow this.
}
// Do approx the same again with the .entrySet()
Set<Entry<Object, Object>> entrySet = m.entrySet();
assertEquals(1, m.size());
assertEquals(1, entrySet.size());
i = entrySet.iterator();
assertTrue(i.hasNext());
@SuppressWarnings("unchecked")
Map.Entry<Object, Object> entry = (Map.Entry<Object, Object>)i.next();
assertEquals(FOO, entry.getKey());
assertEquals(BAR, entry.getValue());
assertFalse(i.hasNext());
try
{
i.next();
fail("Expected i.next() to fail with NoSuchElementException");
}
catch (NoSuchElementException e)
{
// Swallow this.
}
// Do approx the same again with the .values()
Collection<Object> v = m.values();
assertEquals(1, m.size());
assertEquals(1, v.size());
i = v.iterator();
assertTrue(i.hasNext());
Object value = i.next();
assertEquals(BAR, value);
assertFalse(i.hasNext());
try
{
i.next();
fail("Expected i.next() to fail with NoSuchElementException");
}
catch (NoSuchElementException e)
{
// Swallow this.
}
}
}