org.codice.alliance.video.stream.mpegts.netty.StartCodeTest.java Source code

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Here is the source code for org.codice.alliance.video.stream.mpegts.netty.StartCodeTest.java

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/**
 * Copyright (c) Codice Foundation
 * <p/>
 * This is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser
 * General Public License as published by the Free Software Foundation, either version 3 of the
 * License, or any later version.
 * <p/>
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
 * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details. A copy of the GNU Lesser General Public License
 * is distributed along with this program and can be found at
 * <http://www.gnu.org/licenses/lgpl.html>.
 */
package org.codice.alliance.video.stream.mpegts.netty;

import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertThat;

import org.junit.Before;
import org.junit.Test;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;

public class StartCodeTest {

    private StartCode startCode;

    @Before
    public void setup() {
        startCode = new StartCode();
    }

    @Test
    public void testBasicCase() {
        ByteBuf byteBuf = Unpooled.wrappedBuffer(new byte[] { 0x00, 0x00, 0x01, 0x42 });

        int position = byteBuf.forEachByte(startCode);

        assertThat(position, is(3));

    }

    @Test
    public void testExtraLeadingZeroes() {
        ByteBuf byteBuf = Unpooled.wrappedBuffer(new byte[] { 0x00, 0x00, 0x00, 0x00, 0x01, 0x42 });

        int position = byteBuf.forEachByte(startCode);

        assertThat(position, is(5));

    }

    @Test
    public void testVariousLeadingBytes() {
        ByteBuf byteBuf = Unpooled.wrappedBuffer(new byte[] { 0x04, 0x05, 0x00, 0x00, 0x01, 0x42 });

        int position = byteBuf.forEachByte(startCode);

        assertThat(position, is(5));

    }

    @Test
    public void testCodeDoesntExist() {
        ByteBuf byteBuf = Unpooled.wrappedBuffer(new byte[] { 0x04, 0x05, 0x02, 0x00, 0x01, 0x42 });

        int position = byteBuf.forEachByte(startCode);

        assertThat(position, is(-1));

    }

    @Test
    public void testCodeDoesntExist2() {
        ByteBuf byteBuf = Unpooled.wrappedBuffer(new byte[] { 0x04, 0x05, 0x00, 0x00, 0x02, 0x42 });

        int position = byteBuf.forEachByte(startCode);

        assertThat(position, is(-1));

    }

    @Test
    public void testEOF() {
        ByteBuf byteBuf = Unpooled.wrappedBuffer(new byte[] { 0x04, 0x05, 0x00, 0x00, 0x01 });

        int position = byteBuf.forEachByte(startCode);

        assertThat(position, is(-1));

    }

}