ComparatorUtilsTest.java example

Explorer
richfaces-cdk-master
/*
 * JBoss, Home of Professional Open Source
 * Copyright 2010, Red Hat, Inc. and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software 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 software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.richfaces.cdk.util;

import static org.junit.Assert.assertTrue;
import static org.richfaces.cdk.util.ComparatorUtils.nullSafeCompare;

import org.junit.Test;

/**
 * @author Nick Belaevski
 *
 */
public class ComparatorUtilsTest {
    @Test
    public void testNullSafeCompare() throws Exception {
        assertTrue(nullSafeCompare("a", "b") < 0);
        assertTrue(nullSafeCompare("b", "a") > 0);
        assertTrue(nullSafeCompare("a", "a") == 0);

        assertTrue(nullSafeCompare("", "a") < 0);
        assertTrue(nullSafeCompare("a", "") > 0);
        assertTrue(nullSafeCompare("", "") == 0);

        assertTrue(nullSafeCompare(null, "a") < 0);
        assertTrue(nullSafeCompare("a", null) > 0);
        assertTrue(nullSafeCompare((String) null, null) == 0);

        assertTrue(nullSafeCompare(null, "") < 0);
        assertTrue(nullSafeCompare("", null) > 0);
    }
}