plc4j/protocols/s7/src/test/java/org/apache/plc4x/java/s7/netty/S7ProtocolTest.java

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regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
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  http://www.apache.org/licenses/LICENSE-2.0

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package org.apache.plc4x.java.s7.netty;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import org.apache.plc4x.java.isotp.netty.model.IsoTPMessage;
import org.apache.plc4x.java.isotp.netty.model.tpdus.Tpdu;
import org.apache.plc4x.java.netty.NettyTestBase;
import org.apache.plc4x.java.s7.netty.model.messages.S7RequestMessage;
import org.apache.plc4x.java.s7.netty.model.params.VarParameter;
import org.apache.plc4x.java.s7.netty.model.params.items.S7AnyVarParameterItem;
import org.apache.plc4x.java.s7.netty.model.payloads.VarPayload;
import org.apache.plc4x.java.s7.netty.model.payloads.items.VarPayloadItem;
import org.apache.plc4x.java.s7.netty.model.types.*;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Tag;
import org.junit.jupiter.api.Test;

import java.util.LinkedList;

import static java.util.Collections.singletonList;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.mock;

public class S7ProtocolTest extends NettyTestBase {

    private S7Protocol SUT;

    @BeforeEach
    void setUp() {
        SUT = new S7Protocol((short) 1, (short) 1, (short) 1);
    }

    @Test
    @Tag("fast")
    public void encode() throws Exception {
        //TODO: finish me
        LinkedList<Object> out = new LinkedList<>();
        SUT.encode(null, new S7RequestMessage(
            MessageType.ACK,
            (short) 1,
            singletonList(new VarParameter(ParameterType.WRITE_VAR, singletonList(new S7AnyVarParameterItem(
                SpecificationType.VARIABLE_SPECIFICATION, MemoryArea.DATA_BLOCKS, TransportSize.BIT, (short) 1, (short) 1, (short) 1, (byte) 1
            )))),
            singletonList(new VarPayload(
                ParameterType.WRITE_VAR,
                singletonList(new VarPayloadItem(
                    DataTransportErrorCode.OK,
                    DataTransportSize.BYTE_WORD_DWORD, new byte[]{0})
                ))
            )), out);
        assertThat(out).hasSize(1);
    }

    @Test
    @Tag("fast")
    public void decode() throws Exception {
        //TODO: finish me
        LinkedList<Object> out = new LinkedList<>();
        ByteBuf buffer = Unpooled.buffer();
        // Magic Number
        buffer.writeByte(0x32);
        buffer.writeByte(MessageType.JOB.getCode());
        // Reserved magic value
        buffer.writeShort(0x0000);
        // tpduReference
        buffer.writeShort(0x0000);
        // headerParametersLength
        buffer.writeShort(0x0000);
        // userDataLength
        buffer.writeShort(0x0000);
        SUT.decode(null, new IsoTPMessage(mock(Tpdu.class), buffer), out);
        assertThat(out).hasSize(1);
    }

}