/*
* Copyright 2011 Goldman Sachs.
*
* 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 com.gs.collections.impl.set.mutable;
import com.gs.collections.impl.test.Verify;
import org.junit.Assert;
import org.junit.Test;
public class UnifiedSetAsPoolTest
{
private final UnifiedSet<Integer> staticPool = UnifiedSet.newSet();
@Test
public void getReturnsNullIfObjectIsNotPooled()
{
Assert.assertNull(this.staticPool.get(1));
}
@Test
public void getReturnsOriginalObjectForIdenticalObject()
{
Integer firstPooledObject = 1;
this.staticPool.put(firstPooledObject);
Assert.assertSame(firstPooledObject, this.staticPool.get(firstPooledObject));
}
@Test
public void getReturnsPooledObjectForEqualObject()
{
UnifiedSet<AlwaysEqual> pool = UnifiedSet.newSet();
AlwaysEqual firstObject = new AlwaysEqual();
pool.put(firstObject);
AlwaysEqual equalObject = new AlwaysEqual(); // deliberate new instance
Assert.assertSame(firstObject, pool.get(equalObject));
}
private static final class AlwaysEqual
{
@Override
public boolean equals(Object obj)
{
return obj != null;
}
@Override
public int hashCode()
{
return 0;
}
}
@Test
public void putReturnsPassedInObject()
{
Integer firstObject = 1;
Object returnedObject = this.staticPool.put(firstObject);
Assert.assertSame(returnedObject, firstObject);
}
@Test
public void putAndGetReturnOriginalPooledObjectForEqualObject()
{
AlwaysEqual firstObject = new AlwaysEqual();
UnifiedSet<AlwaysEqual> pool = UnifiedSet.newSet();
pool.put(firstObject);
AlwaysEqual secondObject = new AlwaysEqual(); // deliberate new instance
Object returnedObject = pool.put(secondObject);
Assert.assertSame(returnedObject, firstObject);
Assert.assertSame(firstObject, pool.get(secondObject));
}
@Test
public void removeFromPool()
{
Integer firstObject = 1;
this.staticPool.put(firstObject);
Integer returnedObject = this.staticPool.removeFromPool(firstObject);
Assert.assertSame(returnedObject, firstObject);
Verify.assertEmpty(this.staticPool);
}
}