1 files changed, 158 insertions, 0 deletions
diff --git a/src/junit/com/jogamp/common/util/TestBitstream04.java b/src/junit/com/jogamp/common/util/TestBitstream04.java
new file mode 100644
index 0000000..dfc9c90
--- /dev/null
+++ b/src/junit/com/jogamp/common/util/TestBitstream04.java
@@ -0,0 +1,158 @@
+/**
+ * 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 java.nio.ByteOrder;
+
+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/ int32 read/write access w/ semantics
+ * as well as with aligned and unaligned access.
+ * <ul>
+ *  <li>{@link Bitstream#readInt32(boolean, boolean)}</li>
+ *  <li>{@link Bitstream#writeInt32(boolean, boolean, int)}</li>
+ * </ul>
+ */
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class TestBitstream04 extends JunitTracer {
+
+    @Test
+    public void test01Int32BitsAligned() throws IOException {
+        test01Int32BitsImpl(null);
+        test01Int32BitsImpl(ByteOrder.BIG_ENDIAN);
+        test01Int32BitsImpl(ByteOrder.LITTLE_ENDIAN);
+    }
+    void test01Int32BitsImpl(ByteOrder byteOrder) throws IOException {
+        test01Int32BitsAlignedImpl(byteOrder, 0);
+        test01Int32BitsAlignedImpl(byteOrder, 1);
+        test01Int32BitsAlignedImpl(byteOrder, -1);
+        test01Int32BitsAlignedImpl(byteOrder, 7);
+        test01Int32BitsAlignedImpl(byteOrder, 0x0fffffff);
+        test01Int32BitsAlignedImpl(byteOrder, Integer.MIN_VALUE);
+        test01Int32BitsAlignedImpl(byteOrder, Integer.MAX_VALUE);
+        test01Int32BitsAlignedImpl(byteOrder, 0xffffffff);
+    }
+    void test01Int32BitsAlignedImpl(ByteOrder byteOrder, int val32) throws IOException {
+        // Test with buffer defined value
+        final ByteBuffer bb = ByteBuffer.allocate(Buffers.SIZEOF_INT);
+        if( null != byteOrder ) {
+            bb.order(byteOrder);
+        }
+        final boolean bigEndian = ByteOrder.BIG_ENDIAN == bb.order();
+        System.err.println("XXX Test01Int32BitsAligned: byteOrder "+byteOrder+" (bigEndian "+bigEndian+"), value "+val32+", "+toHexBinaryString(val32, 32));
+        System.err.println("XXX Test01Int32BitsAligned: "+toUnsignedBinaryString(val32));
+        bb.putInt(0, val32);
+
+        final Bitstream.ByteBufferStream bbs = new Bitstream.ByteBufferStream(bb);
+        final Bitstream<ByteBuffer> bs = new Bitstream<ByteBuffer>(bbs, false /* outputMode */);
+        {
+            final int r32 = bs.readInt32(true /* msbFirst */, bigEndian);
+            System.err.println("Read32.1 "+r32+", "+toHexBinaryString(r32, 32)+", "+toUnsignedBinaryString(r32));
+            Assert.assertEquals(val32, r32);
+        }
+
+        // Test with written bitstream value
+        bs.setStream(bs.getSubStream(), true /* outputMode */);
+        bs.writeInt32(true /* msbFirst */, bigEndian, val32);
+        bs.setStream(bs.getSubStream(), false /* outputMode */); // switch to input-mode, implies flush()
+        {
+            final int r32 = bs.readInt32(true /* msbFirst */, bigEndian);
+            System.err.println("Read32.2 "+r32+", "+toHexBinaryString(r32, 32)+", "+toUnsignedBinaryString(r32));
+            Assert.assertEquals(val32, r32);
+        }
+    }
+
+    @Test
+    public void test02Int32BitsUnaligned() throws IOException {
+        test02Int32BitsUnalignedImpl(null);
+        test02Int32BitsUnalignedImpl(ByteOrder.BIG_ENDIAN);
+        test02Int32BitsUnalignedImpl(ByteOrder.LITTLE_ENDIAN);
+    }
+    void test02Int32BitsUnalignedImpl(ByteOrder byteOrder) throws IOException {
+        test02Int32BitsUnalignedImpl(byteOrder, 0);
+        test02Int32BitsUnalignedImpl(byteOrder, 1);
+        test02Int32BitsUnalignedImpl(byteOrder, 7);
+        test02Int32BitsUnalignedImpl(byteOrder, 8);
+        test02Int32BitsUnalignedImpl(byteOrder, 15);
+        test02Int32BitsUnalignedImpl(byteOrder, 24);
+        test02Int32BitsUnalignedImpl(byteOrder, 25);
+    }
+    void test02Int32BitsUnalignedImpl(ByteOrder byteOrder, final int preBits) throws IOException {
+        test02Int32BitsUnalignedImpl(byteOrder, preBits, 0);
+        test02Int32BitsUnalignedImpl(byteOrder, preBits, 1);
+        test02Int32BitsUnalignedImpl(byteOrder, preBits, -1);
+        test02Int32BitsUnalignedImpl(byteOrder, preBits, 7);
+        test02Int32BitsUnalignedImpl(byteOrder, preBits, 0x0fffffff);
+        test02Int32BitsUnalignedImpl(byteOrder, preBits, Integer.MIN_VALUE);
+        test02Int32BitsUnalignedImpl(byteOrder, preBits, Integer.MAX_VALUE);
+        test02Int32BitsUnalignedImpl(byteOrder, preBits, 0xffffffff);
+    }
+    void test02Int32BitsUnalignedImpl(ByteOrder byteOrder, int preBits, int val32) throws IOException {
+        final int preBytes = ( preBits + 7 ) >>> 3;
+        final int byteCount = preBytes + Buffers.SIZEOF_INT;
+        final ByteBuffer bb = ByteBuffer.allocate(byteCount);
+        if( null != byteOrder ) {
+            bb.order(byteOrder);
+        }
+        final boolean bigEndian = ByteOrder.BIG_ENDIAN == bb.order();
+        System.err.println("XXX Test02Int32BitsUnaligned: byteOrder "+byteOrder+" (bigEndian "+bigEndian+"), preBits "+preBits+", value "+val32+", "+toHexBinaryString(val32, 32));
+        System.err.println("XXX Test02Int32BitsUnaligned: "+toUnsignedBinaryString(val32));
+
+        // 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.writeInt32(true /* msbFirst */, bigEndian, val32);
+        bs.setStream(bs.getSubStream(), false /* outputMode */); // switch to input-mode, implies flush()
+
+        final int rPre = bs.readBits31(true /* msbFirst */, preBits);
+        final int r32 = bs.readInt32(true /* msbFirst */, bigEndian);
+        System.err.println("ReadPre "+rPre+", "+toBinaryString(rPre, preBits));
+        System.err.println("Read32 "+r32+", "+toHexBinaryString(r32, 32)+", "+toUnsignedBinaryString(r32));
+        Assert.assertEquals(val32, r32);
+    }
+
+    public static void main(String args[]) throws IOException {
+        String tstname = TestBitstream04.class.getName();
+        org.junit.runner.JUnitCore.main(tstname);
+    }
+
+}