Package org.apache.harmony.pack200

Examples of org.apache.harmony.pack200.BHSDCodec

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        }
       
    };
   
    public void testDecodeBandInt() throws IOException, Pack200Exception {
        BHSDCodec codec = Codec.BYTE1;
        byte[] bytes = new byte[]{(byte)3,(byte)56,(byte)122,(byte)78};
        InputStream in = new ByteArrayInputStream(bytes);
        int[] ints = bandSet.decodeBandInt("Test Band", in, codec, 4);
        for (int i = 0; i < ints.length; i++) {
            assertEquals("Wrong value in position " + i, ints[i], bytes[i]);
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            assertEquals("Wrong value in position " + i, ints[i], bytes[i]);
        }
    }
   
    public void testDecodeBandLong() throws IOException, Pack200Exception {
        BHSDCodec codec = Codec.BYTE1;
        byte[] bytes = new byte[]{(byte)3,(byte)56,(byte)122,(byte)78, (byte)0, (byte)255};
        InputStream in = new ByteArrayInputStream(bytes);
        long[] longs = bandSet.decodeBandLong("Test Band", in, codec, 6);
        for (int i = 0; i < longs.length; i++) {
            assertEquals("Wrong value in position " + i, (byte)longs[i], bytes[i]);
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        //TODO: Should test this with other Codecs.
    }
   
    public void testDecodeBandLong2() throws IOException, Pack200Exception {
       
        BHSDCodec codec = Codec.DELTA5;
        byte[] bytes = new byte[]{3, 1, 2, 3, 4, 5}; // 3 is decoded to -2 by DELTA5, which signifies a switch to BYTE1
        InputStream in = new ByteArrayInputStream(bytes);
        long[] longs = bandSet.decodeBandLong("Test Band", in, codec, 5);
        for (int i = 0; i < longs.length; i++) {
            assertEquals("Wrong value in position " + i, longs[i], bytes[i + 1]);
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    decode(BYTE1S2,new byte[] { 9 }, 7, 0);
    decode(BYTE1S2,new byte[] { 10 }, 8, 0);
    decode(BYTE1S2,new byte[] { 11 }, -3, 0);
  }
  public void testCardinality() throws Exception {
    BHSDCodec byte1 = Codec.BYTE1;
    assertEquals(256,byte1.cardinality());
    assertEquals(0,byte1.smallest());
    assertEquals(255,byte1.largest());
    assertFalse(byte1.encodes(-257));
    assertFalse(byte1.encodes(-256));
    assertFalse(byte1.encodes(-255));
    assertFalse(byte1.encodes(-129));
    assertFalse(byte1.encodes(-128));
    assertFalse(byte1.encodes(-127));
    assertFalse(byte1.encodes(-1));
    assertTrue(byte1.encodes(0));
    assertTrue(byte1.encodes(1));
    assertTrue(byte1.encodes(255));
    assertFalse(byte1.encodes(256));
    BHSDCodec byte1s = new BHSDCodec(1,256,1);
    assertEquals(256,byte1s.cardinality());
    assertEquals(-128,byte1s.smallest());
    assertEquals(127,byte1s.largest());
    assertFalse(byte1s.encodes(-257));
    assertFalse(byte1s.encodes(-256));
    assertFalse(byte1s.encodes(-255));
    assertFalse(byte1s.encodes(-129));
    assertTrue(byte1s.encodes(-128));
    assertTrue(byte1s.encodes(-127));
    assertTrue(byte1s.encodes(-1));
    assertTrue(byte1s.encodes(0));
    assertTrue(byte1s.encodes(1));
    assertTrue(byte1s.encodes(127));
    assertFalse(byte1s.encodes(128));
    assertFalse(byte1s.encodes(129));
    assertFalse(byte1s.encodes(255));
    assertFalse(byte1s.encodes(256));
    BHSDCodec byte2s = new BHSDCodec(1,256,2);
    assertEquals(256,byte2s.cardinality());
    assertEquals(-64,byte2s.smallest());
    assertEquals(191,byte2s.largest());
    assertFalse(byte2s.encodes(-257));
    assertFalse(byte2s.encodes(-256));
    assertFalse(byte2s.encodes(-255));
    assertFalse(byte2s.encodes(-129));
    assertFalse(byte2s.encodes(-128));
    assertFalse(byte2s.encodes(-127));
    assertFalse(byte2s.encodes(-65));
    assertTrue(byte2s.encodes(-64));
    assertTrue(byte2s.encodes(-64));
    assertTrue(byte2s.encodes(-1));
    assertTrue(byte2s.encodes(0));
    assertTrue(byte2s.encodes(1));
    assertTrue(byte2s.encodes(127));
    assertTrue(byte2s.encodes(128));
    assertTrue(byte2s.encodes(191));
    assertFalse(byte2s.encodes(192));
    assertFalse(byte2s.encodes(256));   
  }
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    public void testEncodeDecode() throws IOException, Pack200Exception {
        for (int i = 1; i < 116; i++) {
           
            BHSDCodec codec = (BHSDCodec) CodecEncoding.getCodec(i, null, null);
           
            // Test encode-decode with a selection of numbers within the range of the codec
            long delta = (codec.largest() - codec.smallest()) / 4;
            for (long j = codec.smallest(); j <= codec.largest() + 1; j += delta) {
                byte[] encoded = codec.encode(j, 0);
                long decoded = codec.decode(new ByteArrayInputStream(encoded),
                        0);
                if (j != decoded) {
                    fail("Failed with codec: " + codec + " expected: " + j
                            + ", got: " + decoded);
                }
            }
           
            // Test encode-decode with 0           
            assertEquals(0, codec.decode(new ByteArrayInputStream(codec.encode(
                    0, 0)), 0));
        }
    }
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*
*/
public class CodecEncodingTest extends TestCase {

    public void testCanonicalEncodings() throws IOException, Pack200Exception {
        Codec defaultCodec = new BHSDCodec(2, 16, 0, 0);
        assertEquals(defaultCodec, CodecEncoding
                .getCodec(0, null, defaultCodec));
        Map map = new HashMap();
        // These are the canonical encodings specified by the Pack200 spec
        map.put(new Integer(1), "(1,256)");
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        for (int i = 1; i <= 115; i++) {
            assertEquals(i, CodecEncoding.getSpecifier(CodecEncoding.getCodec(i, null, null), null)[0]);
        }

        // Test a range of non-canonical codecs
        Codec c1 = new BHSDCodec(2, 125, 0, 1);
        int[] specifiers = CodecEncoding.getSpecifier(c1, null);
        assertEquals(3, specifiers.length);
        assertEquals(116, specifiers[0]);
        byte[] bytes = new byte[] {(byte) specifiers[1], (byte) specifiers[2]};
        InputStream in = new ByteArrayInputStream(bytes);
        assertEquals(c1, CodecEncoding.getCodec(116, in, null));

        c1 = new BHSDCodec(3, 125, 2, 1);
        specifiers = CodecEncoding.getSpecifier(c1, null);
        assertEquals(3, specifiers.length);
        assertEquals(116, specifiers[0]);
        bytes = new byte[] {(byte) specifiers[1], (byte) specifiers[2]};
        in = new ByteArrayInputStream(bytes);
        assertEquals(c1, CodecEncoding.getCodec(116, in, null));

        c1 = new BHSDCodec(4, 125);
        specifiers = CodecEncoding.getSpecifier(c1, null);
        assertEquals(3, specifiers.length);
        assertEquals(116, specifiers[0]);
        bytes = new byte[] {(byte) specifiers[1], (byte) specifiers[2]};
        in = new ByteArrayInputStream(bytes);
        assertEquals(c1, CodecEncoding.getCodec(116, in, null));

        c1 = new BHSDCodec(5, 125, 2, 0);
        specifiers = CodecEncoding.getSpecifier(c1, null);
        assertEquals(3, specifiers.length);
        assertEquals(116, specifiers[0]);
        bytes = new byte[] {(byte) specifiers[1], (byte) specifiers[2]};
        in = new ByteArrayInputStream(bytes);
        assertEquals(c1, CodecEncoding.getCodec(116, in, null));

        c1 = new BHSDCodec(3, 5, 2, 1);
        specifiers = CodecEncoding.getSpecifier(c1, null);
        assertEquals(3, specifiers.length);
        assertEquals(116, specifiers[0]);
        bytes = new byte[] {(byte) specifiers[1], (byte) specifiers[2]};
        in = new ByteArrayInputStream(bytes);
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public class CodecTest extends TestCase {

    public void testInvalidCodings() {
        for (int i = 0; i < 256; i++) {
            try {
                new BHSDCodec(1, i);
                fail("b=1 -> h=256");
            } catch (IllegalArgumentException e) {
                assertTrue(true);
            }
        }
        for (int i = 1; i <= 5; i++) {
            try {
                new BHSDCodec(i, 256);
                if (i == 5)
                    fail("h=256 -> b!=5");
            } catch (IllegalArgumentException e) {
                assertTrue(true);
            }
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        for (int i = 0; i < 255; i++)
            decode(Codec.BYTE1, new byte[] { (byte) i }, i, 0);
    }

    public void testByte1Delta() throws Exception {
        Codec BYTE1D = new BHSDCodec(1, 256, 0, 1);
        long last = 0;
        for (int i = 1; i < 255; i++)
            last = decode(BYTE1D, new byte[] { (byte) 1 }, i, last);
    }
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        for (int i = 1; i < 255; i++)
            last = decode(BYTE1D, new byte[] { (byte) 1 }, i, last);
    }

    public void testByte1DeltaException() throws Exception {
        Codec BYTE1D = new BHSDCodec(1, 256, 0, 1);
        try {
            BYTE1D.decode(new ByteArrayInputStream(new byte[] { (byte) 1 }));
            fail("Decoding with a delta stream and not passing a last value should throw exception");
        } catch (Pack200Exception e) {
            assertTrue(true);
        }
    }
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Related Classes of org.apache.harmony.pack200.BHSDCodec

  • org.apache.bcel.classfile.ConstantNameAndType
  • org.apache.bcel.classfile.Unknown
  • org.apache.harmony.pack200.Archive
  • org.apache.harmony.pack200.Archive.PackingFile
  • org.apache.harmony.pack200.AttributeDefinitionBands.AttributeDefinition
  • org.apache.harmony.pack200.AttributeLayout
  • org.apache.harmony.pack200.AttributeLayoutMap
  • org.apache.harmony.pack200.BandSet
  • org.apache.harmony.pack200.BcBands
  • org.apache.harmony.pack200.BHSDCodec
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