/*
* Copyright (C) 2013 University of Dundee & Open Microscopy Environment.
* All rights reserved.
*
* This program 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 of the License, or
* (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package ome.services.blitz.test.utests;
import ome.services.blitz.util.ChecksumAlgorithmMapper;
import ome.util.checksum.ChecksumProvider;
import ome.util.checksum.ChecksumProviderFactory;
import ome.util.checksum.ChecksumProviderFactoryImpl;
import ome.util.checksum.ChecksumType;
import omero.model.ChecksumAlgorithm;
import org.testng.Assert;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
/**
* Test that the text of the {@link ChecksumAlgorithm} enumeration values correctly
* indicates the bit width of hash codes from the corresponding checksum algorithm.
* @author m.t.b.carroll@dundee.ac.uk
* @since 5.0
*/
public class ChecksumBitwidthTest {
private ChecksumProviderFactory checksumProviderFactory;
@BeforeMethod
public void setupChecksumProviderFactory() {
checksumProviderFactory = new ChecksumProviderFactoryImpl();
}
/**
* Test that the bit width suffixing the checksum algorithm name matches
* the size of the checksums actually generated by the corresponding algorithm.
*/
@Test
public void testBitWidthsSame() {
for (final ChecksumAlgorithm algorithm : ChecksumAlgorithmMapper.getAllChecksumAlgorithms()) {
final String algorithmName = algorithm.getValue().getValue();
final int expectedBitWidth = Integer.parseInt(algorithmName.substring(algorithmName.lastIndexOf('-') + 1));
final ChecksumType checksumType = ChecksumAlgorithmMapper.getChecksumType(algorithm);
final ChecksumProvider checksumProvider = checksumProviderFactory.getProvider(checksumType);
final int actualBitWidth = checksumProvider.checksumAsBytes().length << 3;
Assert.assertEquals(actualBitWidth, expectedBitWidth,
"bit width of checksum should match that suggested by checksum name " + algorithmName);
}
}
@AfterMethod
public void teardownChecksumProviderFactory() {
checksumProviderFactory = null;
}
}