File Doc Category Size Date Package
TestHexDump.java API Doc Apache Poi 3.0.1 11189 Mon Jan 01 12:39:46 GMT 2007 org.apache.poi.util

TestHexDump

java.lang.Object
- junit.framework.Assert
  - junit.framework.TestCase

public class TestHexDump extends TestCase

author: Glen Stampoultzis (glens at apache.org)
author: Marc Johnson (mjohnson at apache dot org)

Fields Summary
Constructors Summary
public TestHexDump(String name)
Creates new TestHexDump
param
name
super(name);
Methods Summary
public static void main(java.lang.String[] ignored_args)
main method to run the unit tests
param
ignored_args
System.out.println("Testing util.HexDump functionality"); junit.textui.TestRunner.run(TestHexDump.class);
public void testDump()
test dump method
exception
IOException
byte[] testArray = new byte[ 256 ]; for (int j = 0; j < 256; j++) { testArray[ j ] = ( byte ) j; } ByteArrayOutputStream stream = new ByteArrayOutputStream(); HexDump.dump(testArray, 0, stream, 0); byte[] outputArray = new byte[ 16 * (73 + HexDump.EOL.length()) ]; for (int j = 0; j < 16; j++) { int offset = (73 + HexDump.EOL.length()) * j; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) toHex(j); outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) ' "; for (int k = 0; k < 16; k++) { outputArray[ offset++ ] = ( byte ) toHex(j); outputArray[ offset++ ] = ( byte ) toHex(k); outputArray[ offset++ ] = ( byte ) ' "; } for (int k = 0; k < 16; k++) { outputArray[ offset++ ] = ( byte ) toAscii((j * 16) + k); } System.arraycopy(HexDump.EOL.getBytes(), 0, outputArray, offset, HexDump.EOL.getBytes().length); } byte[] actualOutput = stream.toByteArray(); assertEquals("array size mismatch", outputArray.length, actualOutput.length); for (int j = 0; j < outputArray.length; j++) { assertEquals("array[ " + j + "] mismatch", outputArray[ j ], actualOutput[ j ]); } // verify proper behavior with non-zero offset stream = new ByteArrayOutputStream(); HexDump.dump(testArray, 0x10000000, stream, 0); outputArray = new byte[ 16 * (73 + HexDump.EOL.length()) ]; for (int j = 0; j < 16; j++) { int offset = (73 + HexDump.EOL.length()) * j; outputArray[ offset++ ] = ( byte ) '1"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) toHex(j); outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) ' "; for (int k = 0; k < 16; k++) { outputArray[ offset++ ] = ( byte ) toHex(j); outputArray[ offset++ ] = ( byte ) toHex(k); outputArray[ offset++ ] = ( byte ) ' "; } for (int k = 0; k < 16; k++) { outputArray[ offset++ ] = ( byte ) toAscii((j * 16) + k); } System.arraycopy(HexDump.EOL.getBytes(), 0, outputArray, offset, HexDump.EOL.getBytes().length); } actualOutput = stream.toByteArray(); assertEquals("array size mismatch", outputArray.length, actualOutput.length); for (int j = 0; j < outputArray.length; j++) { assertEquals("array[ " + j + "] mismatch", outputArray[ j ], actualOutput[ j ]); } // verify proper behavior with negative offset stream = new ByteArrayOutputStream(); HexDump.dump(testArray, 0xFF000000, stream, 0); outputArray = new byte[ 16 * (73 + HexDump.EOL.length()) ]; for (int j = 0; j < 16; j++) { int offset = (73 + HexDump.EOL.length()) * j; outputArray[ offset++ ] = ( byte ) 'F"; outputArray[ offset++ ] = ( byte ) 'F"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) toHex(j); outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) ' "; for (int k = 0; k < 16; k++) { outputArray[ offset++ ] = ( byte ) toHex(j); outputArray[ offset++ ] = ( byte ) toHex(k); outputArray[ offset++ ] = ( byte ) ' "; } for (int k = 0; k < 16; k++) { outputArray[ offset++ ] = ( byte ) toAscii((j * 16) + k); } System.arraycopy(HexDump.EOL.getBytes(), 0, outputArray, offset, HexDump.EOL.getBytes().length); } actualOutput = stream.toByteArray(); assertEquals("array size mismatch", outputArray.length, actualOutput.length); for (int j = 0; j < outputArray.length; j++) { assertEquals("array[ " + j + "] mismatch", outputArray[ j ], actualOutput[ j ]); } // verify proper behavior with non-zero index stream = new ByteArrayOutputStream(); HexDump.dump(testArray, 0x10000000, stream, 0x81); outputArray = new byte[ (8 * (73 + HexDump.EOL.length())) - 1 ]; for (int j = 0; j < 8; j++) { int offset = (73 + HexDump.EOL.length()) * j; outputArray[ offset++ ] = ( byte ) '1"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) '0"; outputArray[ offset++ ] = ( byte ) toHex(j + 8); outputArray[ offset++ ] = ( byte ) '1"; outputArray[ offset++ ] = ( byte ) ' "; for (int k = 0; k < 16; k++) { int index = 0x81 + (j * 16) + k; if (index < 0x100) { outputArray[ offset++ ] = ( byte ) toHex(index / 16); outputArray[ offset++ ] = ( byte ) toHex(index); } else { outputArray[ offset++ ] = ( byte ) ' "; outputArray[ offset++ ] = ( byte ) ' "; } outputArray[ offset++ ] = ( byte ) ' "; } for (int k = 0; k < 16; k++) { int index = 0x81 + (j * 16) + k; if (index < 0x100) { outputArray[ offset++ ] = ( byte ) toAscii(index); } } System.arraycopy(HexDump.EOL.getBytes(), 0, outputArray, offset, HexDump.EOL.getBytes().length); } actualOutput = stream.toByteArray(); assertEquals("array size mismatch", outputArray.length, actualOutput.length); for (int j = 0; j < outputArray.length; j++) { assertEquals("array[ " + j + "] mismatch", outputArray[ j ], actualOutput[ j ]); } // verify proper behavior with negative index try { HexDump.dump(testArray, 0x10000000, new ByteArrayOutputStream(), -1); fail("should have caught ArrayIndexOutOfBoundsException on negative index"); } catch (ArrayIndexOutOfBoundsException ignored_exception) { // as expected } // verify proper behavior with index that is too large try { HexDump.dump(testArray, 0x10000000, new ByteArrayOutputStream(), testArray.length); fail("should have caught ArrayIndexOutOfBoundsException on large index"); } catch (ArrayIndexOutOfBoundsException ignored_exception) { // as expected } // verify proper behavior with null stream try { HexDump.dump(testArray, 0x10000000, null, 0); fail("should have caught IllegalArgumentException on negative index"); } catch (IllegalArgumentException ignored_exception) { // as expected } // verify proper behaviour with empty byte array ByteArrayOutputStream os = new ByteArrayOutputStream( ); HexDump.dump( new byte[0], 0, os, 0 ); assertEquals( "No Data" + System.getProperty( "line.separator"), os.toString() );
public void testToHex()
assertEquals( "000A", HexDump.toHex((short)0xA)); assertEquals( "0A", HexDump.toHex((byte)0xA)); assertEquals( "0000000A", HexDump.toHex(0xA)); assertEquals( "FFFF", HexDump.toHex((short)0xFFFF));
private char toAscii(int c)
char rval = '."; if ((c >= 32) && (c <= 126)) { rval = ( char ) c; } return rval;
private char toHex(int n)
char[] hexChars = { '0", '1", '2", '3", '4", '5", '6", '7", '8", '9", 'A", 'B", 'C", 'D", 'E", 'F" }; return hexChars[ n % 16 ];