lwjgl/src/java/org/lwjgl/test/mapped/MappedObjectTests1.java

/*
 * Copyright (c) 2002-2011 LWJGL Project
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 * * Redistributions in binary form must reproduce the above copyright
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 *   its contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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package org.lwjgl.test.mapped;

import org.lwjgl.MemoryUtil;
import org.lwjgl.util.mapped.MappedHelper;
import org.lwjgl.util.mapped.MappedObjectUnsafe;

import java.nio.ByteBuffer;

/** @author Riven */
@SuppressWarnings("static-access")
public class MappedObjectTests1 {

	static class Test {

		int value;
	}

	static void testViewField() {
		Test test = new Test();
		test.value = 13;
		test.value += 1;
		test.value++;
		System.out.println(test);

		ByteBuffer bb = ByteBuffer.allocateDirect(200);
		MappedFloat vecs = MappedFloat.map(bb);

		// verify 'malloc' and SIZEOF
		{
			MappedFloat vecs1 = MappedFloat.malloc(1234);

			assert (vecs1.sizeof == MappedFloat.SIZEOF);
			assert (vecs1.sizeof * 1234 == vecs1.backingByteBuffer().capacity());
			assert (MappedFloat.SIZEOF * 1234 == vecs1.backingByteBuffer().capacity());
		}

		// manipulate 'mapped.value'
		{
			assert (vecs.value == 0.0f); // 4.0 is set in constructor, but runViewConstructor is not called
			vecs.value = 1.1f;
			assert (vecs.value == 1.1f);
		}

		// manipulate 'view' with assignment
		{
			assert (vecs.view == 0);
			vecs.view = 1;
			assert (vecs.view == 1);
			assert (vecs.value != 1.1f); // old view
			vecs.view = 0;
		}

		// manipulate 'view' with iinc
		{
			assert (vecs.view == 0);
			vecs.view++;
			assert (vecs.view == 1);
			assert (vecs.value != 1.1f); // old view
			vecs.view = 0;
		}

		// manipulate 'view' with next()
		{
			assert (vecs.view == 0);
			vecs.next();
			assert (vecs.view == 1);
			assert (vecs.value != 1.1f); // old view
			vecs.view = 0;
		}

		// test bounds checking
		{
			assert (vecs.view == 0);
			try {
				vecs.view = 49;
				assert vecs.view == 49;
				vecs.view = 0;
				vecs.view = 50;
				System.out.println("org.lwjgl.util.mapped.Checks is false or there is a bug in bounds checking.");
				vecs.view = 0;
			} catch (IndexOutOfBoundsException e) {
				// expected, ignore
			}

			assert (vecs.view == 0);

			try {
				vecs.view = 10;
				MappedFloat vecs2 = vecs.slice();
				vecs.view = 0;

				vecs2.view = 39;
				assert vecs2.view == 39;
				vecs2.view = 40;
				System.out.println("org.lwjgl.util.mapped.Checks is false or there is a bug in bounds checking.");
			} catch (IndexOutOfBoundsException e) {
				// expected, ignore
			}

			try {
				ByteBuffer posTest = ByteBuffer.allocateDirect(200);
				posTest.position(10 * MappedFloat.SIZEOF); // position > 0

				MappedFloat vecs2 = MappedFloat.map(posTest);
				vecs2.view = 39;
				assert vecs2.view == 39;
				vecs2.view = 40;
				System.out.println("org.lwjgl.util.mapped.Checks is false or there is a bug in bounds checking.");
			} catch (IndexOutOfBoundsException e) {
				// expected, ignore
			}
		}

		// test newBuffer
		{
			long addr1 = MemoryUtil.getAddress(bb);
			ByteBuffer bb2 = MappedHelper.newBuffer(addr1, bb.capacity());
			long addr2 = MemoryUtil.getAddress(bb);

			System.out.println(bb);
			System.out.println(bb2);
			System.out.println(addr1);
			System.out.println(addr2);
		}

		// test 'copy'
		{
			vecs.value = 13.37f;
			MappedFloat dec2 = vecs.dup();
			dec2.view = 1;
			System.out.println(vecs);
			System.out.println(dec2);
			vecs.copyTo(dec2);
			System.out.println(vecs);
			System.out.println(dec2);
			assert (dec2.value == 13.37f);

			vecs.value = 73.31f;
			vecs.copyRange(dec2, 1);
			assert (dec2.value == 73.31f);
		}
	}
}