ByteBufDerivationTest.java — netty Source File

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:
 *
 *   https://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.jupiter.api.Test;

import java.nio.ByteOrder;
import java.util.Random;

import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertInstanceOf;
import static org.junit.jupiter.api.Assertions.assertNotSame;
import static org.junit.jupiter.api.Assertions.assertSame;

/**
 * Tests wrapping a wrapped buffer does not go way too deep chaining.
 */
public class ByteBufDerivationTest {

    @Test
    public void testSlice() throws Exception {
        ByteBuf buf = Unpooled.buffer(8).setIndex(1, 7);
        ByteBuf slice = buf.slice(1, 7);

        assertInstanceOf(AbstractUnpooledSlicedByteBuf.class, slice);
        assertSame(buf, slice.unwrap());
        assertEquals(0, slice.readerIndex());
        assertEquals(7, slice.writerIndex());
        assertEquals(7, slice.capacity());
        assertEquals(7, slice.maxCapacity());

        slice.setIndex(1, 6);
        assertEquals(1, buf.readerIndex());
        assertEquals(7, buf.writerIndex());
    }

    @Test
    public void testSliceOfSlice() throws Exception {
        ByteBuf buf = Unpooled.buffer(8);
        ByteBuf slice = buf.slice(1, 7);
        ByteBuf slice2 = slice.slice(0, 6);

        assertNotSame(slice, slice2);
        assertInstanceOf(AbstractUnpooledSlicedByteBuf.class, slice2);
        assertSame(buf, slice2.unwrap());
// ... (160 more lines)