import javax.swing.*;

/* @test
 * @bug 6921688
 * @summary Lead selection index should be cleared after selection was erased
 * @author Fedor Bobin
 * @run main DefaultListSelectionModelTest
 */
public class DefaultListSelectionModelTest {
    public static void main(String[] args) {
        final DefaultListSelectionModel defaultListSelectionModel = new DefaultListSelectionModel();
        defaultListSelectionModel.setSelectionInterval(0, 0);
        if (defaultListSelectionModel.getLeadSelectionIndex() != 0) {
            throw new AssertionError("Was selected only item 0 but lead selected index = " +
                    defaultListSelectionModel.getLeadSelectionIndex());
        }
        defaultListSelectionModel.removeIndexInterval(0, 0);

        if (!defaultListSelectionModel.isSelectionEmpty()) {
            throw new AssertionError("Selection should be empty");
        }

        if (defaultListSelectionModel.getLeadSelectionIndex() != -1) {
            throw new AssertionError("Selection is empty => there is no lead selected index => " +
                    "lead selected index must be -1 but lead selected index = " +
                    defaultListSelectionModel.getLeadSelectionIndex());
        }
    }
}