/*
* Copyright (c) 2013, Harald Kuhr
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name "TwelveMonkeys" nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. 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 com.twelvemonkeys.io;
import org.junit.Test;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import static org.junit.Assert.*;
/**
* LittleEndianDataInputStreamTest
*
* @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
* @author last modified by $Author: haraldk$
* @version $Id: LittleEndianDataInputStreamTest.java,v 1.0 15.02.13 11:04 haraldk Exp$
*/
public class LittleEndianDataInputStreamTest {
@Test
public void testReadBoolean() throws IOException {
LittleEndianDataInputStream data = new LittleEndianDataInputStream(new ByteArrayInputStream(new byte[] {0, 1, 0x7f, (byte) 0xff}));
assertFalse(data.readBoolean());
assertTrue(data.readBoolean());
assertTrue(data.readBoolean());
assertTrue(data.readBoolean());
}
@Test
public void testReadByte() throws IOException {
LittleEndianDataInputStream data = new LittleEndianDataInputStream(new ByteArrayInputStream(
new byte[] {
(byte) 0x00, (byte) 0x00,
(byte) 0x01, (byte) 0x00,
(byte) 0xff, (byte) 0xff,
(byte) 0x00, (byte) 0x80,
(byte) 0xff, (byte) 0x7f,
(byte) 0x00, (byte) 0x01,
}
));
assertEquals(0, data.readByte());
assertEquals(0, data.readByte());
assertEquals(1, data.readByte());
assertEquals(0, data.readByte());
assertEquals(-1, data.readByte());
assertEquals(-1, data.readByte());
assertEquals(0, data.readByte());
assertEquals(Byte.MIN_VALUE, data.readByte());
assertEquals(-1, data.readByte());
assertEquals(Byte.MAX_VALUE, data.readByte());
assertEquals(0, data.readByte());
assertEquals(1, data.readByte());
}
@Test
public void testReadUnsignedByte() throws IOException {
LittleEndianDataInputStream data = new LittleEndianDataInputStream(new ByteArrayInputStream(
new byte[] {
(byte) 0x00, (byte) 0x00,
(byte) 0x01, (byte) 0x00,
(byte) 0xff, (byte) 0xff,
(byte) 0x00, (byte) 0x80,
(byte) 0xff, (byte) 0x7f,
(byte) 0x00, (byte) 0x01,
}
));
assertEquals(0, data.readUnsignedByte());
assertEquals(0, data.readUnsignedByte());
assertEquals(1, data.readUnsignedByte());
assertEquals(0, data.readUnsignedByte());
assertEquals(255, data.readUnsignedByte());
assertEquals(255, data.readUnsignedByte());
assertEquals(0, data.readUnsignedByte());
assertEquals(128, data.readUnsignedByte());
assertEquals(255, data.readUnsignedByte());
assertEquals(Byte.MAX_VALUE, data.readUnsignedByte());
assertEquals(0, data.readUnsignedByte());
assertEquals(1, data.readUnsignedByte());
}
@Test
public void testReadShort() throws IOException {
LittleEndianDataInputStream data = new LittleEndianDataInputStream(new ByteArrayInputStream(
new byte[] {
(byte) 0x00, (byte) 0x00,
(byte) 0x01, (byte) 0x00,
(byte) 0xff, (byte) 0xff,
(byte) 0x00, (byte) 0x80,
(byte) 0xff, (byte) 0x7f,
(byte) 0x00, (byte) 0x01,
}
));
assertEquals(0, data.readShort());
assertEquals(1, data.readShort());
assertEquals(-1, data.readShort());
assertEquals(Short.MIN_VALUE, data.readShort());
assertEquals(Short.MAX_VALUE, data.readShort());
assertEquals(256, data.readShort());
}
@Test
public void testReadUnsignedShort() throws IOException {
LittleEndianDataInputStream data = new LittleEndianDataInputStream(new ByteArrayInputStream(
new byte[] {
(byte) 0x00, (byte) 0x00,
(byte) 0x01, (byte) 0x00,
(byte) 0xff, (byte) 0xff,
(byte) 0x00, (byte) 0x80,
(byte) 0xff, (byte) 0x7f,
(byte) 0x00, (byte) 0x01,
}
));
assertEquals(0, data.readUnsignedShort());
assertEquals(1, data.readUnsignedShort());
assertEquals(Short.MAX_VALUE * 2 + 1, data.readUnsignedShort());
assertEquals(Short.MAX_VALUE + 1, data.readUnsignedShort());
assertEquals(Short.MAX_VALUE, data.readUnsignedShort());
assertEquals(256, data.readUnsignedShort());
}
@Test
public void testReadInt() throws IOException {
LittleEndianDataInputStream data = new LittleEndianDataInputStream(new ByteArrayInputStream(
new byte[] {
(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
(byte) 0x01, (byte) 0x00, (byte) 0x00, (byte) 0x00,
(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x80,
(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0x7f,
(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x01,
(byte) 0xff, (byte) 0x00, (byte) 0xff, (byte) 0x00,
(byte) 0x00, (byte) 0xff, (byte) 0x00, (byte) 0xff,
(byte) 0xbe, (byte) 0xba, (byte) 0xfe, (byte) 0xca,
(byte) 0xca, (byte) 0xfe, (byte) 0xd0, (byte) 0x0d,
}
));
assertEquals(0, data.readInt());
assertEquals(1, data.readInt());
assertEquals(-1, data.readInt());
assertEquals(Integer.MIN_VALUE, data.readInt());
assertEquals(Integer.MAX_VALUE, data.readInt());
assertEquals(16777216, data.readInt());
assertEquals(0xff00ff, data.readInt());
assertEquals(0xff00ff00, data.readInt());
assertEquals(0xCafeBabe, data.readInt());
assertEquals(0x0dd0feca, data.readInt());
}
@Test
public void testReadLong() throws IOException {
LittleEndianDataInputStream data = new LittleEndianDataInputStream(new ByteArrayInputStream(
new byte[] {
(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
(byte) 0x01, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x80,
(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0x7f,
(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x01,
(byte) 0x0d, (byte) 0xd0, (byte) 0xfe, (byte) 0xca, (byte) 0xbe, (byte) 0xba, (byte) 0xfe, (byte) 0xca,
}
));
assertEquals(0, data.readLong());
assertEquals(1, data.readLong());
assertEquals(-1, data.readLong());
assertEquals(Long.MIN_VALUE, data.readLong());
assertEquals(Long.MAX_VALUE, data.readLong());
assertEquals(72057594037927936L, data.readLong());
assertEquals(0xCafeBabeL << 32 | 0xCafeD00dL, data.readLong());
}
}