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Java example source code file (EmptyByteBufTest.java)

This example Java source code file (EmptyByteBufTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

emptybytebuf, emptybytebuftest, test, unsupportedoperationexception

The EmptyByteBufTest.java Java example source code

/*
 * Copyright 2013 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */package io.netty.buffer;

import org.junit.Test;

import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;

public class EmptyByteBufTest {

    @Test
    public void testIsWritable() {
        EmptyByteBuf empty = new EmptyByteBuf(UnpooledByteBufAllocator.DEFAULT);
        assertFalse(empty.isWritable());
        assertFalse(empty.isWritable(1));
    }

    @Test
    public void testIsReadable() {
        EmptyByteBuf empty = new EmptyByteBuf(UnpooledByteBufAllocator.DEFAULT);
        assertFalse(empty.isReadable());
        assertFalse(empty.isReadable(1));
    }

    @Test
    public void testArray() {
        EmptyByteBuf empty = new EmptyByteBuf(UnpooledByteBufAllocator.DEFAULT);
        assertThat(empty.hasArray(), is(true));
        assertThat(empty.array().length, is(0));
        assertThat(empty.arrayOffset(), is(0));
    }

    @Test
    public void testNioBuffer() {
        EmptyByteBuf empty = new EmptyByteBuf(UnpooledByteBufAllocator.DEFAULT);
        assertThat(empty.nioBufferCount(), is(1));
        assertThat(empty.nioBuffer().position(), is(0));
        assertThat(empty.nioBuffer().limit(), is(0));
        assertThat(empty.nioBuffer(), is(sameInstance(empty.nioBuffer())));
        assertThat(empty.nioBuffer(), is(sameInstance(empty.internalNioBuffer(0, 0))));
    }

    @Test
    public void testMemoryAddress() {
        EmptyByteBuf empty = new EmptyByteBuf(UnpooledByteBufAllocator.DEFAULT);
        if (empty.hasMemoryAddress()) {
            assertThat(empty.memoryAddress(), is(not(0L)));
        } else {
            try {
                empty.memoryAddress();
                fail();
            } catch (UnsupportedOperationException ignored) {
                // Ignore.
            }
        }
    }
}

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