package org.traccar.protocol;

import org.traccar.helper.TestDataManager;
import org.jboss.netty.buffer.ChannelBuffers;
import static org.traccar.helper.DecoderVerifier.verify;
import org.junit.Test;

public class Gt02ProtocolDecoderTest {

    @Test
    public void testDecode() throws Exception {

        Gt02ProtocolDecoder decoder = new Gt02ProtocolDecoder(null);
        decoder.setDataManager(new TestDataManager());

        byte[] buf1 = {0x68,0x68,0x25,0x00,0x00,0x01,0x23,0x45,0x67,(byte)0x89,0x01,0x23,0x45,0x00,0x01,0x10,0x01,0x01,0x01,0x01,0x01,0x01,0x02,0x6B,0x3F,0x3E,0x02,0x6B,0x3F,0x3E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x0D,0x0A};
        verify(decoder.decode(null, null, ChannelBuffers.wrappedBuffer(buf1)));

    }

}

package org.traccar.protocol;

import org.jboss.netty.buffer.ChannelBuffers;
import static org.junit.Assert.assertNull;
import org.junit.Test;
import org.traccar.helper.ChannelBufferTools;
import static org.traccar.helper.DecoderVerifier.verify;
import org.traccar.helper.TestDataManager;

public class Gt02ProtocolDecoderTest {

    @Test
    public void testDecode() throws Exception {

        Gt02ProtocolDecoder decoder = new Gt02ProtocolDecoder(null);
        decoder.setDataManager(new TestDataManager());
        
        verify(decoder.decode(null, null, ChannelBuffers.wrappedBuffer(ChannelBufferTools.convertArray(
                new int[] {0x68,0x68,0x25,0x00,0x00,0x01,0x23,0x45,0x67,0x89,0x01,0x23,0x45,0x00,0x01,0x10,0x01,0x01,0x01,0x01,0x01,0x01,0x02,0x6B,0x3F,0x3E,0x02,0x6B,0x3F,0x3E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x0D,0x0A}))));
        
        assertNull(decoder.decode(null, null, ChannelBuffers.wrappedBuffer(ChannelBufferTools.convertArray(
                new int[] {0x68,0x68,0x11,0x06,0x03,0x03,0x58,0x89,0x90,0x51,0x01,0x27,0x66,0x00,0x00,0x1a,0x04,0x02,0x29,0x2d,0x0d,0x0a}))));
        
        verify(decoder.decode(null, null, ChannelBuffers.wrappedBuffer(ChannelBufferTools.convertArray(
                new int[] {0x68,0x68,0x25,0x00,0xa4,0x03,0x58,0x89,0x90,0x51,0x01,0x27,0x66,0x00,0x01,0x10,0x0e,0x09,0x06,0x0a,0x1d,0x1b,0x00,0xad,0xe1,0xc9,0x0b,0x79,0xea,0x30,0x00,0x01,0x1b,0x00,0x00,0x00,0x00,0x00,0x00,0x05,0x0d,0x0a}))));

    }

}

Update GT02 unit test