/*
* (c) Copyright 2009 by Volker Bergmann. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, is permitted under the terms of the
* GNU General Public License (GPL).
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
* REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
* HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package org.databene.benerator.util;
import static org.junit.Assert.assertEquals;
import org.databene.commons.StringUtil;
import org.junit.Test;
/**
* Tests the {@link LuhnUtil} class.<br/><br/>
* Created: 18.10.2009 10:29:43
* @since 0.6.0
* @author Volker Bergmann
*/
public class LuhnUtilTest {
private static final String LUHN_VALID_NUMBER = "49927398716";
@Test
public void testRequiredLuhnDigit() {
assertEquals('0', LuhnUtil.requiredCheckDigit("0000000009"));
assertEquals(StringUtil.lastChar(LUHN_VALID_NUMBER), LuhnUtil.requiredCheckDigit(LUHN_VALID_NUMBER));
assertEquals('0', LuhnUtil.requiredCheckDigit("1234001234560"));
assertEquals('1', LuhnUtil.requiredCheckDigit("234001234560"));
}
@Test
public void testLuhnValid() {
assertEquals(false, LuhnUtil.luhnValid("0000000009"));
assertEquals(true, LuhnUtil.luhnValid("0000000000"));
assertEquals(true, LuhnUtil.luhnValid("1234001234560"));
}
}