/******************************************************************************
* Copyright (c) 2016 Oracle
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Konstantin Komissarchik - initial implementation and ongoing maintenance
******************************************************************************/
package org.eclipse.sapphire.tests.observable;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Set;
import org.eclipse.sapphire.ObservableSet;
import org.eclipse.sapphire.tests.EventLog;
import org.eclipse.sapphire.tests.SapphireTestCase;
import org.eclipse.sapphire.util.SetFactory;
import org.junit.Test;
/**
* Tests ObservableSet.
*
* @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a>
*/
public final class ObservableSetTests extends SapphireTestCase
{
@Test
public void Size() throws Exception
{
final Set<String> base = new HashSet<String>();
final ObservableSet<String> observable = new ObservableSet<String>( base );
assertEquals( 0, observable.size() );
base.add( "a" );
base.add( "b" );
assertEquals( 2, observable.size() );
base.clear();
assertEquals( 0, observable.size() );
}
@Test
public void Empty() throws Exception
{
final Set<String> base = new HashSet<String>();
final ObservableSet<String> observable = new ObservableSet<String>( base );
assertTrue( observable.isEmpty() );
base.add( "a" );
assertFalse( observable.isEmpty() );
base.clear();
assertTrue( observable.isEmpty() );
}
@Test
public void Contains() throws Exception
{
final Set<String> base = new HashSet<String>();
final ObservableSet<String> observable = new ObservableSet<String>( base );
base.add( "a" );
assertTrue( observable.contains( "a" ) );
assertFalse( observable.contains( "b" ) );
assertFalse( observable.contains( new Object() ) );
}
@Test
public void ContainsAll() throws Exception
{
final Set<String> base = new HashSet<String>();
final ObservableSet<String> observable = new ObservableSet<String>( base );
base.add( "a" );
base.add( "b" );
base.add( "c" );
assertTrue( observable.containsAll( SetFactory.unmodifiable( "a", "b" ) ) );
assertFalse( observable.containsAll( SetFactory.unmodifiable( "a", "d" ) ) );
}
@Test
public void Iterator() throws Exception
{
final Set<String> base = new LinkedHashSet<String>();
final ObservableSet<String> observable = new ObservableSet<String>( base );
base.add( "a" );
base.add( "b" );
base.add( "c" );
final EventLog log = new EventLog();
observable.attach( log );
final Iterator<String> itr = observable.iterator();
assertTrue( itr.hasNext() );
assertEquals( "a", itr.next() );
assertTrue( itr.hasNext() );
assertEquals( "b", itr.next() );
itr.remove();
assertEquals( SetFactory.unmodifiable( "a", "c" ), base );
assertEquals( 1, log.size() );
assertTrue( itr.hasNext() );
assertEquals( "c", itr.next() );
assertFalse( itr.hasNext() );
}
@Test
public void ToArray1() throws Exception
{
final Set<String> base = new LinkedHashSet<String>();
final ObservableSet<String> observable = new ObservableSet<String>( base );
base.add( "a" );
base.add( "b" );
final Object[] array = observable.toArray();
assertEquals( 2, array.length );
assertEquals( "a", array[ 0 ] );
assertEquals( "b", array[ 1 ] );
}
@Test
public void ToArray2() throws Exception
{
final Set<String> base = new LinkedHashSet<String>();
final ObservableSet<String> observable = new ObservableSet<String>( base );
base.add( "a" );
base.add( "b" );
final String[] array = new String[ 2 ];
final String[] result = observable.toArray( array );
assertSame( array, result );
assertEquals( "a", array[ 0 ] );
assertEquals( "b", array[ 1 ] );
}
@Test
public void Add() throws Exception
{
final Set<String> base = new LinkedHashSet<String>();
final ObservableSet<String> observable = new ObservableSet<String>( base );
base.add( "a" );
base.add( "b" );
final EventLog log = new EventLog();
observable.attach( log );
observable.add( "c" );
assertEquals( SetFactory.unmodifiable( "a", "b", "c" ), base );
assertEquals( 1, log.size() );
log.clear();
observable.add( "a" );
assertEquals( SetFactory.unmodifiable( "a", "b", "c" ), base );
assertEquals( 0, log.size() );
}
@Test
public void AddAll() throws Exception
{
final Set<String> base = new LinkedHashSet<String>();
final ObservableSet<String> observable = new ObservableSet<String>( base );
base.add( "a" );
base.add( "b" );
final EventLog log = new EventLog();
observable.attach( log );
observable.addAll( SetFactory.unmodifiable( "a", "c", "d" ) );
assertEquals( SetFactory.unmodifiable( "a", "b", "c", "d" ), base );
assertEquals( 1, log.size() );
log.clear();
observable.addAll( SetFactory.unmodifiable( "a", "b" ) );
assertEquals( SetFactory.unmodifiable( "a", "b", "c", "d" ), base );
assertEquals( 0, log.size() );
}
@Test
public void Remove() throws Exception
{
final Set<String> base = new LinkedHashSet<String>();
final ObservableSet<String> observable = new ObservableSet<String>( base );
base.add( "a" );
base.add( "b" );
base.add( "c" );
final EventLog log = new EventLog();
observable.attach( log );
observable.remove( "b" );
assertEquals( SetFactory.unmodifiable( "a", "c" ), base );
assertEquals( 1, log.size() );
log.clear();
observable.remove( "d" );
assertEquals( SetFactory.unmodifiable( "a", "c" ), base );
assertEquals( 0, log.size() );
}
@Test
public void RemoveAll() throws Exception
{
final Set<String> base = new LinkedHashSet<String>();
final ObservableSet<String> observable = new ObservableSet<String>( base );
base.add( "a" );
base.add( "b" );
base.add( "c" );
final EventLog log = new EventLog();
observable.attach( log );
observable.removeAll( SetFactory.unmodifiable( "b", "c", "d" ) );
assertEquals( SetFactory.unmodifiable( "a" ), base );
assertEquals( 1, log.size() );
log.clear();
observable.removeAll( SetFactory.unmodifiable( "d", "e" ) );
assertEquals( SetFactory.unmodifiable( "a" ), base );
assertEquals( 0, log.size() );
}
@Test
public void RetainAll() throws Exception
{
final Set<String> base = new LinkedHashSet<String>();
final ObservableSet<String> observable = new ObservableSet<String>( base );
base.add( "a" );
base.add( "b" );
base.add( "c" );
final EventLog log = new EventLog();
observable.attach( log );
observable.retainAll( SetFactory.unmodifiable( "a", "c" ) );
assertEquals( SetFactory.unmodifiable( "a", "c" ), base );
assertEquals( 1, log.size() );
log.clear();
observable.retainAll( SetFactory.unmodifiable( "a", "c" ) );
assertEquals( SetFactory.unmodifiable( "a", "c" ), base );
assertEquals( 0, log.size() );
}
@Test
public void Clear() throws Exception
{
final Set<String> base = new LinkedHashSet<String>();
final ObservableSet<String> observable = new ObservableSet<String>( base );
base.add( "a" );
base.add( "b" );
base.add( "c" );
final EventLog log = new EventLog();
observable.attach( log );
observable.clear();
assertTrue( base.isEmpty() );
assertEquals( 1, log.size() );
log.clear();
observable.clear();
assertTrue( base.isEmpty() );
assertEquals( 0, log.size() );
}
}