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Diffstat (limited to 'src/junit/com/jogamp/common/util/TestBitstream02.java')
-rw-r--r-- | src/junit/com/jogamp/common/util/TestBitstream02.java | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/src/junit/com/jogamp/common/util/TestBitstream02.java b/src/junit/com/jogamp/common/util/TestBitstream02.java new file mode 100644 index 0000000..dc7333c --- /dev/null +++ b/src/junit/com/jogamp/common/util/TestBitstream02.java @@ -0,0 +1,133 @@ +/** + * Copyright 2014 JogAmp Community. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, are + * permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this list of + * conditions and the following disclaimer. + * + * 2. 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. + * + * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``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 JogAmp Community 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. + * + * The views and conclusions contained in the software and documentation are those of the + * authors and should not be interpreted as representing official policies, either expressed + * or implied, of JogAmp Community. + */ + +package com.jogamp.common.util; + +import java.io.IOException; +import java.nio.ByteBuffer; + +import org.junit.Assert; +import org.junit.Test; + +import com.jogamp.common.nio.Buffers; +import com.jogamp.junit.util.JunitTracer; + +import static com.jogamp.common.util.BitstreamData.*; + +import org.junit.FixMethodOrder; +import org.junit.runners.MethodSorters; + +/** + * Test {@link Bitstream} w/ int8 read/write access w/ semantics + * as well as with aligned and unaligned access. + * <ul> + * <li>{@link Bitstream#readInt8(boolean, boolean)}</li> + * <li>{@link Bitstream#writeInt8(boolean, boolean, byte)}</li> + * </ul> + */ +@FixMethodOrder(MethodSorters.NAME_ASCENDING) +public class TestBitstream02 extends JunitTracer { + + @Test + public void test01Int8BitsAligned() throws IOException { + test01Int8BitsAlignedImpl((byte)0); + test01Int8BitsAlignedImpl((byte)1); + test01Int8BitsAlignedImpl((byte)7); + test01Int8BitsAlignedImpl(Byte.MIN_VALUE); + test01Int8BitsAlignedImpl(Byte.MAX_VALUE); + test01Int8BitsAlignedImpl((byte)0xff); + } + void test01Int8BitsAlignedImpl(byte val8) throws IOException { + // Test with buffer defined value + final ByteBuffer bb = ByteBuffer.allocate(Buffers.SIZEOF_BYTE); + System.err.println("XXX Test01Int8BitsAligned: value "+val8+", "+toHexBinaryString(val8, 8)); + bb.put(0, val8); + + final Bitstream.ByteBufferStream bbs = new Bitstream.ByteBufferStream(bb); + final Bitstream<ByteBuffer> bs = new Bitstream<ByteBuffer>(bbs, false /* outputMode */); + { + final byte r8 = (byte) bs.readInt8(true /* msbFirst */); + System.err.println("Read8.1 "+r8+", "+toHexBinaryString(r8, 8)); + Assert.assertEquals(val8, r8); + } + + // Test with written bitstream value + bs.setStream(bs.getSubStream(), true /* outputMode */); + bs.writeInt8(true /* msbFirst */, val8); + bs.setStream(bs.getSubStream(), false /* outputMode */); // switch to input-mode, implies flush() + { + final byte r8 = (byte) bs.readInt8(true /* msbFirst */); + System.err.println("Read8.2 "+r8+", "+toHexBinaryString(r8, 8)); + Assert.assertEquals(val8, r8); + } + } + + @Test + public void test02Int8BitsUnaligned() throws IOException { + test02Int8BitsUnalignedImpl(0); + test02Int8BitsUnalignedImpl(1); + test02Int8BitsUnalignedImpl(7); + test02Int8BitsUnalignedImpl(8); + test02Int8BitsUnalignedImpl(15); + test02Int8BitsUnalignedImpl(24); + test02Int8BitsUnalignedImpl(25); + } + void test02Int8BitsUnalignedImpl(final int preBits) throws IOException { + test02Int8BitsUnalignedImpl(preBits, (byte)0); + test02Int8BitsUnalignedImpl(preBits, (byte)1); + test02Int8BitsUnalignedImpl(preBits, (byte)7); + test02Int8BitsUnalignedImpl(preBits, Byte.MIN_VALUE); + test02Int8BitsUnalignedImpl(preBits, Byte.MAX_VALUE); + test02Int8BitsUnalignedImpl(preBits, (byte)0xff); + } + void test02Int8BitsUnalignedImpl(int preBits, byte val8) throws IOException { + final int preBytes = ( preBits + 7 ) >>> 3; + final int byteCount = preBytes + Buffers.SIZEOF_BYTE; + final ByteBuffer bb = ByteBuffer.allocate(byteCount); + System.err.println("XXX Test02Int8BitsUnaligned: preBits "+preBits+", value "+val8+", "+toHexBinaryString(val8, 8)); + + // Test with written bitstream value + final Bitstream.ByteBufferStream bbs = new Bitstream.ByteBufferStream(bb); + final Bitstream<ByteBuffer> bs = new Bitstream<ByteBuffer>(bbs, true /* outputMode */); + bs.writeBits31(true /* msbFirst */, preBits, 0); + bs.writeInt8(true /* msbFirst */, val8); + bs.setStream(bs.getSubStream(), false /* outputMode */); // switch to input-mode, implies flush() + + final int rPre = (short) bs.readBits31(true /* msbFirst */, preBits); + final byte r8 = (byte) bs.readInt8(true /* msbFirst */); + System.err.println("ReadPre "+rPre+", "+toBinaryString(rPre, preBits)); + System.err.println("Read8 "+r8+", "+toHexBinaryString(r8, 8)); + Assert.assertEquals(val8, r8); + } + + public static void main(String args[]) throws IOException { + String tstname = TestBitstream02.class.getName(); + org.junit.runner.JUnitCore.main(tstname); + } + +} |