/**
* Copyright (C) 2009-2010 Wilfred Springer
*
* This file is part of Preon.
*
* Preon is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2, or (at your option) any later version.
*
* Preon is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* Preon; see the file COPYING. If not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Linking this library statically or dynamically with other modules is making a
* combined work based on this library. Thus, the terms and conditions of the
* GNU General Public License cover the whole combination.
*
* As a special exception, the copyright holders of this library give you
* permission to link this library with independent modules to produce an
* executable, regardless of the license terms of these independent modules, and
* to copy and distribute the resulting executable under terms of your choice,
* provided that you also meet, for each linked independent module, the terms
* and conditions of the license of that module. An independent module is a
* module which is not derived from or based on this library. If you modify this
* library, you may extend this exception to your version of the library, but
* you are not obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
package org.codehaus.preon.el.ctx;
import org.codehaus.preon.el.*;
import org.codehaus.preon.el.util.StringBuilderDocument;
import static org.junit.Assert.*;
import org.junit.Test;
import static org.codehaus.preon.el.Bindings.EarlyBinding;
public class ClassReferenceContextTest {
@Test
public void testFromBindings() {
Expression<Integer, Person> expr = Expressions.from(Person.class)
.using(EarlyBinding).toInteger("age * 2");
Person wilfred = new Person();
wilfred.name = "Wilfred";
wilfred.age = 35;
assertEquals(70, expr.eval(wilfred).intValue());
}
@Test
public void testValidReferences() {
ReferenceContext<Person> context = new ClassReferenceContext<Person>(
Person.class);
Reference<Person> personsName = context.selectAttribute("name");
Reference<Person> fathersName = context.selectAttribute("father")
.selectAttribute("name");
Person wilfred = new Person();
wilfred.name = "Wilfred";
wilfred.age = 35;
Person levi = new Person();
levi.name = "Levi";
levi.age = 8;
levi.father = wilfred;
assertEquals("Levi", personsName.resolve(levi));
assertEquals("Wilfred", fathersName.resolve(levi));
assertEquals("Wilfred", personsName.resolve(wilfred));
StringBuilder builder = new StringBuilder();
fathersName.document(new StringBuilderDocument(builder));
System.out.println(builder.toString());
}
@Test(expected=BindingException.class)
public void testInvalidReferences() {
ReferenceContext<Person> context = new ClassReferenceContext<Person>(
Person.class);
context.selectAttribute("gender");
}
private static class Person {
String name;
int age;
Person father;
Person mother;
}
}