package jmri.jmrix.lenz.swing.packetgen;

import java.awt.GraphicsEnvironment;
import jmri.jmrix.lenz.XNetMessage;
import org.junit.Assert;
import org.junit.Assume;
import org.junit.jupiter.api.*;

/**
 * Tests for the jmri.jmrix.lenz.packetgen.PacketGenFrame class
 *
 * @author Bob Jacobsen Copyright (c) 2001, 2002
 */
public class PacketGenFrameTest extends jmri.util.JmriJFrameTestBase {

    @Test
    public void testPacketNull() {
        Assume.assumeFalse(GraphicsEnvironment.isHeadless());
        XNetMessage m = ((PacketGenFrame)frame).createPacket("");
        Assert.assertNull("null pointer", m);
    }

    @Test
    public void testPacketCreate() {
        Assume.assumeFalse(GraphicsEnvironment.isHeadless());
        XNetMessage m = ((PacketGenFrame)frame).createPacket("12 34 AB 3 19 6 B B1");
        Assert.assertEquals("length", 8, m.getNumDataElements());
        Assert.assertEquals("0th byte", 0x12, m.getElement(0) & 0xFF);
        Assert.assertEquals("1st byte", 0x34, m.getElement(1) & 0xFF);
        Assert.assertEquals("2nd byte", 0xAB, m.getElement(2) & 0xFF);
        Assert.assertEquals("3rd byte", 0x03, m.getElement(3) & 0xFF);
        Assert.assertEquals("4th byte", 0x19, m.getElement(4) & 0xFF);
        Assert.assertEquals("5th byte", 0x06, m.getElement(5) & 0xFF);
        Assert.assertEquals("6th byte", 0x0B, m.getElement(6) & 0xFF);
        Assert.assertEquals("7th byte", 0xB1, m.getElement(7) & 0xFF);
    }

    @BeforeEach
    @Override
    public void setUp() {
        jmri.util.JUnitUtil.setUp();
        if(!GraphicsEnvironment.isHeadless()){
           frame = new PacketGenFrame();
        }
    }

    @AfterEach
    @Override
    public void tearDown() {
        jmri.util.JUnitUtil.clearShutDownManager(); // put in place because AbstractMRTrafficController implementing subclass was not terminated properly
        super.tearDown();
    }
}