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/* Copyright (c) 2007-2009 Timothy Wall, All Rights Reserved
*
* The contents of this file is dual-licensed under 2
* alternative Open Source/Free licenses: LGPL 2.1 or later and
* Apache License 2.0. (starting with JNA version 4.0.0).
*
* You can freely decide which license you want to apply to
* the project.
*
* You may obtain a copy of the LGPL License at:
*
* http://www.gnu.org/licenses/licenses.html
*
* A copy is also included in the downloadable source code package
* containing JNA, in file "LGPL2.1".
*
* You may obtain a copy of the Apache License at:
*
* http://www.apache.org/licenses/
*
* A copy is also included in the downloadable source code package
* containing JNA, in file "AL2.0".
*/
package com.sun.jna;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import java.nio.DoubleBuffer;
import java.util.List;
import junit.framework.TestCase;
/** TODO: need more alignment tests, especially platform-specific behavior
* @author twall@users.sf.net
*/
//@SuppressWarnings("unused")
public class StructureBufferFieldTest extends TestCase {
public static void main(java.lang.String[] argList) {
junit.textui.TestRunner.run(StructureBufferFieldTest.class);
}
static class BufferStructure extends Structure {
public static final List<String> FIELDS = createFieldsOrder("buffer", "dbuffer");
public Buffer buffer;
public DoubleBuffer dbuffer;
@Override
protected List<String> getFieldOrder() {
return FIELDS;
}
}
public void testBufferFieldWriteNULL() {
if (!Platform.HAS_BUFFERS) return;
BufferStructure bs = new BufferStructure();
bs.write();
}
public void testBufferFieldWriteNonNULL() {
if (!Platform.HAS_BUFFERS) return;
BufferStructure bs = new BufferStructure();
bs.buffer = ByteBuffer.allocateDirect(16);
bs.dbuffer = ((ByteBuffer)bs.buffer).asDoubleBuffer();
bs.write();
}
public void testBufferFieldReadUnchanged() {
if (!Platform.HAS_BUFFERS) return;
BufferStructure bs = new BufferStructure();
Buffer b = ByteBuffer.allocateDirect(16);
bs.buffer = b;
bs.dbuffer = ((ByteBuffer)bs.buffer).asDoubleBuffer();
bs.write();
bs.read();
assertEquals("Buffer field should be unchanged", b, bs.buffer);
}
public void testBufferFieldReadChanged() {
if (!Platform.HAS_BUFFERS) return;
BufferStructure bs = new BufferStructure();
if (Native.POINTER_SIZE == 4) {
bs.getPointer().setInt(0, 0x1);
}
else {
bs.getPointer().setLong(0, 0x1);
}
try {
bs.read();
fail("Structure read should fail if Buffer pointer was set");
}
catch(IllegalStateException e) {
}
bs.buffer = ByteBuffer.allocateDirect(16);
try {
bs.read();
fail("Structure read should fail if Buffer pointer has changed");
}
catch(IllegalStateException e) {
}
}
public void testBufferFieldReadChangedToNULL() {
if (!Platform.HAS_BUFFERS) return;
BufferStructure bs = new BufferStructure();
bs.buffer = ByteBuffer.allocateDirect(16);
bs.dbuffer = ((ByteBuffer)bs.buffer).asDoubleBuffer();
bs.read();
assertNull("Structure Buffer field should be set null", bs.buffer);
assertNull("Structure DoubleBuffer field should be set null", bs.dbuffer);
}
}
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