107 lines
4.5 KiB
Java
107 lines
4.5 KiB
Java
package com.webcodepro.shrinkit.io;
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import java.io.IOException;
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import java.util.Calendar;
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import java.util.GregorianCalendar;
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import com.webcodepro.shrinkit.io.LittleEndianByteInputStream;
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import junit.framework.TestCase;
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/**
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* Exercise the LittleEndianByteInputStream class.
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* @author robgreene@users.sourceforge.net
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*/
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public class LittleEndianByteInputStreamTest extends TestCase {
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public void testReadA() throws IOException {
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LittleEndianByteInputStream bs = new LittleEndianByteInputStream("a".getBytes());
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assertEquals('a', bs.read());
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assertEquals(-1, bs.read());
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assertEquals(1, bs.getTotalBytesRead());
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}
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public void testReadB() throws IOException {
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// Just to ensure we can get more than one byte...
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LittleEndianByteInputStream bs = new LittleEndianByteInputStream("hello".getBytes());
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assertEquals('h', bs.read());
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assertEquals('e', bs.read());
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assertEquals('l', bs.read());
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assertEquals('l', bs.read());
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assertEquals('o', bs.read());
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assertEquals(-1, bs.read());
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assertEquals(5, bs.getTotalBytesRead());
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}
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public void testReadBytesInt() throws IOException {
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// Ensure we read the requested data.
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LittleEndianByteInputStream bs = new LittleEndianByteInputStream("HelloWorld".getBytes());
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assertEquals("Hello", new String(bs.readBytes(5)));
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assertEquals("World", new String(bs.readBytes(5)));
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assertEquals(-1, bs.read());
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assertEquals(10, bs.getTotalBytesRead());
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}
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public void textReadBytesIntError() {
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// Ensure that we fail appropriately
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LittleEndianByteInputStream bs = new LittleEndianByteInputStream("Hi".getBytes());
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try {
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bs.readBytes(3);
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fail();
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} catch (IOException ex) {
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assertTrue(true); // Expected
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assertEquals(2, bs.getTotalBytesRead());
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}
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}
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public void testCheckNuFileId() throws IOException {
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LittleEndianByteInputStream bs = new LittleEndianByteInputStream(new byte[] { 0x4e, (byte)0xf5, 0x46, (byte)0xe9, 0x6c, (byte)0xe5 });
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assertTrue(bs.checkNuFileId());
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assertEquals(6, bs.getTotalBytesRead());
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bs = new LittleEndianByteInputStream("NotNuFile".getBytes());
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assertFalse(bs.checkNuFileId());
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}
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public void testCheckNuFxId() throws IOException {
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LittleEndianByteInputStream bs = new LittleEndianByteInputStream(new byte[] { 0x4e, (byte)0xf5, 0x46, (byte)0xd8 });
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assertTrue(bs.checkNuFxId());
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assertEquals(4, bs.getTotalBytesRead());
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bs = new LittleEndianByteInputStream("NotNuFx".getBytes());
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assertFalse(bs.checkNuFxId());
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}
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public void testReadWord() throws IOException {
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LittleEndianByteInputStream bs = new LittleEndianByteInputStream(new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05 });
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assertEquals(0x0201, bs.readWord());
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assertEquals(0x0403, bs.readWord());
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assertEquals(4, bs.getTotalBytesRead());
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}
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public void testReadWordHighBitSet() throws IOException {
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LittleEndianByteInputStream bs = new LittleEndianByteInputStream(new byte[] { (byte)0xff, (byte)0xff });
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assertEquals(0xffff, bs.readWord());
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assertEquals(2, bs.getTotalBytesRead());
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}
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public void testReadLong() throws IOException {
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LittleEndianByteInputStream bs = new LittleEndianByteInputStream(new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05 });
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assertEquals(0x04030201, bs.readLong());
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assertEquals(4, bs.getTotalBytesRead());
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}
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public void testReadLongHighBitSet() throws IOException {
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LittleEndianByteInputStream bs = new LittleEndianByteInputStream(new byte[] { (byte)0xff, (byte)0xff, (byte)0xff, (byte)0xff });
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assertEquals(0xffffffffL, bs.readLong());
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assertEquals(4, bs.getTotalBytesRead());
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}
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public void testReadDate() throws IOException {
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LittleEndianByteInputStream bs = new LittleEndianByteInputStream(new byte[] {
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// From NuFX documentation, final revision 3
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0x00, 0x0a, 0x01, 0x58, 0x16, 0x0a, 0x00, 0x07, // 01:10:00am 10/22/1988 saturday
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0x00, 0x10, 0x0b, 0x58, 0x11, 0x0b, 0x00, 0x05, // 11:16:00am 11/17/1988 thursday
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0x00, 0x0c, 0x0d, 0x58, 0x16, 0x0a, 0x00, 0x07, // 01:12:00pm 10/22/1988 saturday
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});
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assertEquals(new GregorianCalendar(1988, Calendar.OCTOBER, 22, 1, 10, 0).getTime(), bs.readDate());
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assertEquals(new GregorianCalendar(1988, Calendar.NOVEMBER, 17, 11, 16, 0).getTime(), bs.readDate());
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assertEquals(new GregorianCalendar(1988, Calendar.OCTOBER, 22, 13, 12, 0).getTime(), bs.readDate());
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assertEquals(24, bs.getTotalBytesRead());
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}
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public void testReadNullDate() throws IOException {
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LittleEndianByteInputStream bs = new LittleEndianByteInputStream(new byte[] {
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // null date
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});
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assertNull(bs.readDate());
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assertEquals(8, bs.getTotalBytesRead());
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}
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}
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