ConversionTest.java

/**
 * OpenSpotLight - Open Source IT Governance Platform
 *
 * Copyright (c) 2009, CARAVELATECH CONSULTORIA E TECNOLOGIA EM INFORMATICA LTDA
 * or third-party contributors as indicated by the @author tags or express
 * copyright attribution statements applied by the authors.  All third-party
 * contributions are distributed under license by CARAVELATECH CONSULTORIA E
 * TECNOLOGIA EM INFORMATICA LTDA.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * This program 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 Lesser General Public License  for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 *
 ***********************************************************************
 * OpenSpotLight - Plataforma de Governança de TI de Código Aberto
 *
 * Direitos Autorais Reservados (c) 2009, CARAVELATECH CONSULTORIA E TECNOLOGIA
 * EM INFORMATICA LTDA ou como contribuidores terceiros indicados pela etiqueta
 * @author ou por expressa atribuição de direito autoral declarada e atribuída pelo autor.
 * Todas as contribuições de terceiros estão distribuídas sob licença da
 * CARAVELATECH CONSULTORIA E TECNOLOGIA EM INFORMATICA LTDA.
 *
 * Este programa é software livre; você pode redistribuí-lo e/ou modificá-lo sob os
 * termos da Licença Pública Geral Menor do GNU conforme publicada pela Free Software
 * Foundation.
 *
 * Este programa é distribuído na expectativa de que seja útil, porém, SEM NENHUMA
 * GARANTIA; nem mesmo a garantia implícita de COMERCIABILIDADE OU ADEQUAÇÃO A UMA
 * FINALIDADE ESPECÍFICA. Consulte a Licença Pública Geral Menor do GNU para mais detalhes.
 *
 * Você deve ter recebido uma cópia da Licença Pública Geral Menor do GNU junto com este
 * programa; se não, escreva para:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
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 */

package org.openspotlight.common.util.test;

import java.math.BigDecimal;
import java.util.Date;

import org.hamcrest.core.Is;
import org.junit.Assert;
import org.junit.Test;
import org.openspotlight.common.exception.SLRuntimeException;
import org.openspotlight.common.util.Conversion;

/**
 * Test class for {@link Conversion}.
 * 
 * @author Luiz Fernando Teston - feu.teston@caravelatech.com
 */
@SuppressWarnings("all")
public class ConversionTest {

    public static enum SomeEnum {
        A,
        B,
        C
    }

    @Test
    public void shouldConvertValidValues()
            throws Exception {
        final Long l = 3l;
        final String asString = Conversion.convert(l, String.class);
        final Integer asInt = Conversion.convert(asString, Integer.class);
        final BigDecimal asBd = Conversion.convert(l, BigDecimal.class);
        Assert.assertThat(asString, Is.is("3"));
        Assert.assertThat(asInt, Is.is(3));
        Assert.assertThat(asBd, Is.is(new BigDecimal("3")));
    }

    @Test(expected = SLRuntimeException.class)
    public void shouldNotWorkWhenThereIsNoTimeZone()
            throws Exception {
        final String date1AsString = "2010-06-02 11:26:44";
        Conversion.convert(date1AsString, Date.class);

    }

    @Test
    public void shouldWorkWithClass()
            throws Exception {
        final Class clazz = String.class;
        final String asString = Conversion.convert(clazz, String.class);
        final Class asClass = Conversion.convert(asString, Class.class);
        Assert.assertThat(asClass == clazz, Is.is(true));
    }

    @Test
    public void shouldWorkWithDates()
            throws Exception {
        final Date d = new Date();
        final String asString = Conversion.convert(d, String.class);
        final Date asDate = Conversion.convert(asString, Date.class);
        Assert.assertThat(d.toString(), Is.is(asDate.toString()));
    }

    @Test
    public void shouldWorkWithEnums()
            throws Exception {
        final SomeEnum a = SomeEnum.A;
        final String asString = Conversion.convert(a, String.class);
        final SomeEnum asEnum = Conversion.convert(asString, SomeEnum.class);
        Assert.assertThat(a, Is.is(asEnum));
    }
}