49 lines
2.0 KiB
Java
49 lines
2.0 KiB
Java
package com.webcodepro.shrinkit;
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import java.io.IOException;
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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 Master Header Block.
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* For right now, we just grab a "real" header
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* and check it against our computed values.
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* @author robgreene@users.sourceforge.net
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*/
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public class MasterHeaderBlockTest extends TestCase {
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public void testWithValidCrc() throws IOException {
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LittleEndianByteInputStream bs = new LittleEndianByteInputStream(new byte[] {
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0x4e, (byte)0xf5, 0x46, (byte)0xe9, 0x6c, (byte)0xe5, (byte)0xdc, 0x1b,
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0x2d, 0x00, 0x00, 0x00, 0x38, 0x0c, 0x14, 0x5f,
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0x08, 0x07, 0x30, 0x04, 0x29, 0x0d, 0x14, 0x5f,
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0x08, 0x07, 0x01, 0x04, 0x01, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, (byte)0xae, (byte)0xac,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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});
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MasterHeaderBlock b = new MasterHeaderBlock(bs);
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// Using byte values since it should be a bit more clear where they came from
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assertEquals(0x1bdc, b.getMasterCrc());
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assertEquals(0x2d, b.getTotalRecords());
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assertEquals(new LittleEndianByteInputStream(new byte[] {0x38, 0x0c, 0x14, 0x5f, 0x08, 0x07, 0x30, 0x04}).readDate(), b.getArchiveCreateWhen());
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assertEquals(new LittleEndianByteInputStream(new byte[] {0x29, 0x0d, 0x14, 0x5f, 0x08, 0x07, 0x01, 0x04}).readDate(), b.getArchiveModWhen());
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assertEquals(0x01, b.getMasterVersion());
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assertEquals(0x1acae, b.getMasterEof());
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assertTrue(b.isValidCrc());
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}
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public void testWithInvalidCrc() throws IOException {
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LittleEndianByteInputStream bs = new LittleEndianByteInputStream(new byte[] {
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0x4e, (byte)0xf5, 0x46, (byte)0xe9, 0x6c, (byte)0xe5, 0x00, 0x00, // <-- Bad CRC!
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0x2d, 0x00, 0x00, 0x00, 0x38, 0x0c, 0x14, 0x5f,
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0x08, 0x07, 0x30, 0x04, 0x29, 0x0d, 0x14, 0x5f,
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0x08, 0x07, 0x01, 0x04, 0x01, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, (byte)0xae, (byte)0xac,
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0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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});
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MasterHeaderBlock b = new MasterHeaderBlock(bs);
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assertFalse(b.isValidCrc());
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}
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}
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