package jalview.gui;

import static org.testng.Assert.assertTrue;

import jalview.datamodel.Alignment;
import jalview.datamodel.AlignmentI;
import jalview.datamodel.Sequence;
import jalview.datamodel.SequenceGroup;
import jalview.datamodel.SequenceI;

import java.awt.event.MouseEvent;

import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;

public class ScalePanelTest
{
  @BeforeClass(alwaysRun = true)
  public void setUpJvOptionPane()
  {
    JvOptionPane.setInteractiveMode(false);
    JvOptionPane.setMockResponse(JvOptionPane.CANCEL_OPTION);
  }

  @Test(groups = "Functional")
  public void testPreventNegativeStartColumn()
  {
    SequenceI seq1 = new Sequence("Seq1", "MATRESS");
    SequenceI seq2 = new Sequence("Seq2", "MADNESS");
    AlignmentI al = new Alignment(new SequenceI[] { seq1, seq2 });
    
    AlignFrame alignFrame = new AlignFrame(al, al.getWidth(),
            al.getHeight());
    ScalePanel scalePanel = new ScalePanel(
            alignFrame.getViewport(), alignFrame.alignPanel
    );
    
    MouseEvent mouse = new MouseEvent(
            scalePanel, 0, 1, 0, 4, 0, 1, false
    );
    scalePanel.mousePressed(mouse);
    scalePanel.mouseDragged(mouse);

    // simulate dragging selection leftwards beyond the sequences giving
    // negative X
    mouse = new MouseEvent(scalePanel, 0, 1, 0, -30, 0, 1, false);

    scalePanel.mouseReleased(mouse);

    SequenceGroup sg = scalePanel.av.getSelectionGroup();
    int startCol = sg.getStartRes();

    assertTrue(startCol >= 0);


  }

}