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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.io;
import static org.junit.Assert.assertEquals;
import java.io.IOException;
import org.junit.Before;
import org.junit.Test;
import it.unimi.dsi.fastutil.io.FastByteArrayInputStream;
public class SegmentedInputStreamTest {
private final FastByteArrayInputStream stream = new FastByteArrayInputStream(
new byte[] { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 }
);
private SegmentedInputStream sis;
@Before
public void setUp() throws IllegalArgumentException, IOException {
sis = new SegmentedInputStream(stream);
sis.addBlock(0, 1, 2);
sis.addBlock(2, 3, 4);
sis.addBlock(6, 7, 8);
sis.addBlock(8, 11, 14);
}
@Test
public void testResetClose() throws IOException {
assertEquals(0, sis.read());
sis.reset();
assertEquals(1, sis.read());
sis.reset();
assertEquals(-1, sis.read());
sis.close();
assertEquals(2, sis.read());
sis.reset();
assertEquals(3, sis.read());
sis.reset();
assertEquals(-1, sis.read());
sis.close();
assertEquals(6, sis.read());
sis.reset();
assertEquals(7, sis.read());
sis.reset();
assertEquals(-1, sis.read());
}
@Test
public void testRead() throws IOException {
final byte[] b = new byte[11];
assertEquals(1, sis.read(b, 0, 10));
assertEquals(0, b[0]);
sis.reset();
assertEquals(1, sis.read(b, 1, 10));
assertEquals(1, b[1]);
sis.close();
assertEquals(1, sis.read(b, 5, 5));
assertEquals(2, b[5]);
}
@Test
public void testSkip() throws IOException {
assertEquals(1, sis.skip(1));
sis.reset();
assertEquals(1, sis.skip(10));
sis.reset();
assertEquals(0, sis.skip(10));
sis.close();
sis.close();
sis.close();
assertEquals(2, sis.skip(2));
assertEquals(1, sis.skip(2));
sis.reset();
assertEquals(3, sis.skip(10));
}
}
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