test.it.unimi.dsi.bits.Utf32TransformationStrategyTest Maven / Gradle / Ivy

Go to download
package it.unimi.dsi.bits;

/*
 * DSI utilities
 *
 * Copyright (C) 2010-2017 Sebastiano Vigna
 *
 *  This library 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 3 of the License, or (at your option)
 *  any later version.
 *
 *  This library 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 program; if not, see .
 *
 */

import static org.junit.Assert.assertEquals;

import org.junit.Test;

public class Utf32TransformationStrategyTest {

	@Test
	public void testGetLong() {
		String s = new String(new char[] { '\u0001', '\u0002' });
		assertEquals(96, TransformationStrategies.prefixFreeUtf32().toBitVector(s).length());
		assertEquals(0x4000000080000000L, TransformationStrategies.prefixFreeUtf32().toBitVector(s).getLong(0, 64));
		assertEquals(0x0000000040000000L, TransformationStrategies.prefixFreeUtf32().toBitVector(s).getLong(32, 96));
		s = new String(new char[] { '\u0001', '\u0002', '\u0003' });
		assertEquals(128, TransformationStrategies.prefixFreeUtf32().toBitVector(s).length());
		assertEquals(0x80000000L, TransformationStrategies.prefixFreeUtf32().toBitVector(s).getLong(0, 48));
		assertEquals(0x4000000080000000L, TransformationStrategies.prefixFreeUtf32().toBitVector(s).getLong(0, 64));
		s = new String(new char[] { '\u0001', '\u0002', '\u0003', '\u0004' });
		assertEquals(160, TransformationStrategies.prefixFreeUtf32().toBitVector(s).length());
		assertEquals(0, TransformationStrategies.prefixFreeUtf32().toBitVector(s).getLong(128, 160));
		//System.err.println(Long.toHexString(TransformationStrategies.prefixFreeUtf32().toBitVector(s).getLong(16, 80)));
		assertEquals(0xC000000040000000L, TransformationStrategies.prefixFreeUtf32().toBitVector(s).getLong(32, 96));
		s = new String(new char[] { '\uD800', '\uDC00' });
		assertEquals(64, TransformationStrategies.prefixFreeUtf32().length(s));
		assertEquals(0x8000, TransformationStrategies.prefixFreeUtf32().toBitVector(s).getLong(0, 64));


		s = new String(new char[] { '\u0001', '\u0002' });
		assertEquals(64, TransformationStrategies.utf32().toBitVector(s).length());
		assertEquals(0x4000000080000000L, TransformationStrategies.utf32().toBitVector(s).getLong(0, 64));
		s = new String(new char[] { '\u0001', '\u0002', '\u0003' });
		assertEquals(96, TransformationStrategies.utf32().toBitVector(s).length());
		assertEquals(0xC000000040000000L, TransformationStrategies.utf32().toBitVector(s).getLong(32, 96));
		s = new String(new char[] { '\u0001', '\u0002', '\u0003', '\u0004' });
		assertEquals(128, TransformationStrategies.utf32().toBitVector(s).length());
		assertEquals(0x4000000080000000L, TransformationStrategies.utf32().toBitVector(s).getLong(0, 64));
		assertEquals(0x20000000C0000000L, TransformationStrategies.utf32().toBitVector(s).getLong(64, 128));

		s = new String(new char[] { '\uD800', '\uDC00' });
		assertEquals(32, TransformationStrategies.utf32().length(s));
		assertEquals(0x8000, TransformationStrategies.utf32().toBitVector(s).getLong(0, 32));
	}

}