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/*
* DSI utilities
*
* Copyright (C) 2010-2023 Sebastiano Vigna
*
* This program and the accompanying materials are made available under the
* terms of the GNU Lesser General Public License v2.1 or later,
* which is available at
* http://www.gnu.org/licenses/old-licenses/lgpl-2.1-standalone.html,
* or the Apache Software License 2.0, which is available at
* https://www.apache.org/licenses/LICENSE-2.0.
*
* 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.
*
* SPDX-License-Identifier: LGPL-2.1-or-later OR Apache-2.0
*/
package it.unimi.dsi.bits;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
import it.unimi.dsi.lang.MutableString;
public class IsoTransformationStrategyTest {
@Test
public void testCharSequence() {
String s = new String(new char[] { '\u0001', '\u0002' });
assertEquals(24, TransformationStrategies.prefixFreeIso().toBitVector(s).length());
assertEquals(0x4080L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(0, 16));
assertEquals(0x4080L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(0, 24));
assertTrue(TransformationStrategies.prefixFreeIso().toBitVector(s).getBoolean(7));
assertFalse(TransformationStrategies.prefixFreeIso().toBitVector(s).getBoolean(0));
assertTrue(TransformationStrategies.prefixFreeIso().toBitVector(s).getBoolean(14));
assertFalse(TransformationStrategies.prefixFreeIso().toBitVector(s).getBoolean(15));
assertFalse(TransformationStrategies.prefixFreeIso().toBitVector(s).getBoolean(16));
s = new String(new char[] { '\u0001', '\u0002', '\u0003' });
assertEquals(32, TransformationStrategies.prefixFreeIso().toBitVector(s).length());
assertEquals(0xC04080L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(0, 24));
assertEquals(0xC04080L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(0, 32));
s = new String(new char[] { '\u0001', '\u0002', '\u0003', '\u0004' });
assertEquals(40, TransformationStrategies.prefixFreeIso().toBitVector(s).length());
assertEquals(0x20C04080L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(0, 32));
assertEquals(0, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(32, 40));
assertEquals(0x20C040L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(8, 40));
assertEquals(0x20C0408L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(4, 44));
assertEquals(0x20C04L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(12, 44));
s = new String(new char[] { '\u0001', '\u00FF', '\u00FF', '\u00FF', '\u0001', '\u0001', '\u0001', '\u0001', '\u0001', '\u00FF', '\u00FF', '\u00FF' });
assertEquals(104, TransformationStrategies.prefixFreeIso().toBitVector(s).length());
assertEquals(0x8080808080FFFFFL, TransformationStrategies.iso().toBitVector(s).getLong(12, 72));
assertEquals(0x080808080FFFFFF8L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(4, 68));
s = new String(new char[] { '\u0001', '\u0002' });
assertEquals(16, TransformationStrategies.iso().toBitVector(s).length());
assertEquals(0x4080L, TransformationStrategies.iso().toBitVector(s).getLong(0, 16));
s = new String(new char[] { '\u0001', '\u0002', '\u0003' });
assertEquals(24, TransformationStrategies.iso().toBitVector(s).length());
assertEquals(0xC04080L, TransformationStrategies.iso().toBitVector(s).getLong(0, 24));
s = new String(new char[] { '\u0001', '\u0002', '\u0003', '\u0004' });
assertEquals(32, TransformationStrategies.iso().toBitVector(s).length());
assertEquals(0x20C04080L, TransformationStrategies.iso().toBitVector(s).getLong(0, 32));
s = new String(new char[] { '\u0001', '\u00FF', '\u00FF', '\u00FF', '\u0001', '\u0001', '\u0001', '\u0001' });
assertEquals(64, TransformationStrategies.iso().toBitVector(s).length());
assertEquals(0x808080FFFFFF80L, TransformationStrategies.iso().toBitVector(s).getLong(0, 56));
assertEquals(0x80808080FFFFFF80L, TransformationStrategies.iso().toBitVector(s).getLong(0, 64));
assertEquals(0x80808080FFFFFF8L, TransformationStrategies.iso().toBitVector(s).getLong(4, 64));
s = new String(new char[] { '\u0001', '\u00FF', '\u00FF', '\u00FF', '\u0001', '\u0001', '\u0001', '\u0001', '\u0001', '\u00FF', '\u00FF', '\u00FF' });
assertEquals(96, TransformationStrategies.iso().toBitVector(s).length());
assertEquals(0x8080808080FFFFFL, TransformationStrategies.iso().toBitVector(s).getLong(12, 72));
assertEquals(0x080808080FFFFFF8L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(4, 68));
}
@Test
public void testMutableString() {
MutableString s = new MutableString(new char[] { '\u0001', '\u0002' });
assertEquals(24, TransformationStrategies.prefixFreeIso().toBitVector(s).length());
assertEquals(0x4080L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(0, 16));
assertEquals(0x4080L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(0, 24));
assertTrue(TransformationStrategies.prefixFreeIso().toBitVector(s).getBoolean(7));
assertFalse(TransformationStrategies.prefixFreeIso().toBitVector(s).getBoolean(0));
assertTrue(TransformationStrategies.prefixFreeIso().toBitVector(s).getBoolean(14));
assertFalse(TransformationStrategies.prefixFreeIso().toBitVector(s).getBoolean(15));
assertFalse(TransformationStrategies.prefixFreeIso().toBitVector(s).getBoolean(16));
s = new MutableString(new char[] { '\u0001', '\u0002', '\u0003' });
assertEquals(32, TransformationStrategies.prefixFreeIso().toBitVector(s).length());
assertEquals(0xC04080L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(0, 24));
assertEquals(0xC04080L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(0, 32));
s = new MutableString(new char[] { '\u0001', '\u0002', '\u0003', '\u0004' });
assertEquals(40, TransformationStrategies.prefixFreeIso().toBitVector(s).length());
assertEquals(0x20C04080L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(0, 32));
assertEquals(0, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(32, 40));
assertEquals(0x20C040L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(8, 40));
assertEquals(0x20C0408L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(4, 44));
assertEquals(0x20C04L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(12, 44));
s = new MutableString(new char[] { '\u0001', '\u00FF', '\u00FF', '\u00FF', '\u0001', '\u0001', '\u0001', '\u0001', '\u0001', '\u00FF', '\u00FF', '\u00FF' });
assertEquals(104, TransformationStrategies.prefixFreeIso().toBitVector(s).length());
assertEquals(0x8080808080FFFFFL, TransformationStrategies.iso().toBitVector(s).getLong(12, 72));
assertEquals(0x080808080FFFFFF8L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(4, 68));
s = new MutableString(new char[] { '\u0001', '\u0002' });
assertEquals(16, TransformationStrategies.iso().toBitVector(s).length());
assertEquals(0x4080L, TransformationStrategies.iso().toBitVector(s).getLong(0, 16));
s = new MutableString(new char[] { '\u0001', '\u0002', '\u0003' });
assertEquals(24, TransformationStrategies.iso().toBitVector(s).length());
assertEquals(0xC04080L, TransformationStrategies.iso().toBitVector(s).getLong(0, 24));
s = new MutableString(new char[] { '\u0001', '\u0002', '\u0003', '\u0004' });
assertEquals(32, TransformationStrategies.iso().toBitVector(s).length());
assertEquals(0x20C04080L, TransformationStrategies.iso().toBitVector(s).getLong(0, 32));
s = new MutableString(new char[] { '\u0001', '\u00FF', '\u00FF', '\u00FF', '\u0001', '\u0001', '\u0001', '\u0001' });
assertEquals(64, TransformationStrategies.iso().toBitVector(s).length());
assertEquals(0x808080FFFFFF80L, TransformationStrategies.iso().toBitVector(s).getLong(0, 56));
assertEquals(0x80808080FFFFFF80L, TransformationStrategies.iso().toBitVector(s).getLong(0, 64));
assertEquals(0x80808080FFFFFF8L, TransformationStrategies.iso().toBitVector(s).getLong(4, 64));
s = new MutableString(new char[] { '\u0001', '\u00FF', '\u00FF', '\u00FF', '\u0001', '\u0001', '\u0001', '\u0001', '\u0001', '\u00FF', '\u00FF', '\u00FF' });
assertEquals(96, TransformationStrategies.iso().toBitVector(s).length());
assertEquals(0x8080808080FFFFFL, TransformationStrategies.iso().toBitVector(s).getLong(12, 72));
assertEquals(0x080808080FFFFFF8L, TransformationStrategies.prefixFreeIso().toBitVector(s).getLong(4, 68));
}
}
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