CreateByteBufferTest.java

package com.github.nettybook.ch6;

import static org.junit.Assert.*;

import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.IntBuffer;

import org.junit.Test;

public class CreateByteBufferTest {
    @Test
    public void createTest() {
        CharBuffer heapBuffer = CharBuffer.allocate(11);
        assertEquals(11, heapBuffer.capacity());
        assertEquals(false, heapBuffer.isDirect());

        ByteBuffer directBuffer = ByteBuffer.allocateDirect(11);
        assertEquals(11, directBuffer.capacity());
        assertEquals(true, directBuffer.isDirect());

        int[] array = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0 };
        IntBuffer intHeapBuffer = IntBuffer.wrap(array);
        assertEquals(11, intHeapBuffer.capacity());
        assertEquals(false, intHeapBuffer.isDirect());
    }
}