/******************************************************************************
* Copyright (c) 2014 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.modeling.el.operators;
import org.eclipse.sapphire.modeling.el.FunctionContext;
import org.eclipse.sapphire.modeling.el.FunctionResult;
import org.eclipse.sapphire.modeling.el.ModelElementFunctionContext;
import org.eclipse.sapphire.modeling.el.parser.ExpressionLanguageParser;
import org.junit.Test;
/**
* Tests for the empty operator.
*
* @author <a href="mailto:konstantin.komissarchik@oracle.com">Konstantin Komissarchik</a>
*/
public final class EmptyOperatorTests extends AbstractOperatorTests
{
@Test
public void testEmptyOperator1()
{
test( "${ empty null }", true );
}
@Test
public void testEmptyOperator2()
{
test( "${ empty 5 }", false );
}
@Test
public void testEmptyOperator3()
{
test( "${ empty 'abc' }", false );
}
@Test
public void testEmptyOperator4()
{
test( "${ empty '' }", true );
}
@Test
public void EmptyOperator_ElementProperty()
{
final TestElement element = TestElement.TYPE.instantiate();
final FunctionContext context = new ModelElementFunctionContext( element );
final FunctionResult fr = ExpressionLanguageParser.parse( "${ empty ChildElement }" ).evaluate( context );
try
{
assertEquals( Boolean.TRUE, fr.value() );
element.getChildElement().content( true );
assertEquals( Boolean.FALSE, fr.value() );
element.getChildElement().clear();
assertEquals( Boolean.TRUE, fr.value() );
}
finally
{
fr.dispose();
}
}
}