GetSelectedValuesListTest.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @key headful
 * @bug 7108280
 * @summary Verifies that getSelectedValuesList works fine without crash when
 *          the setSelectionInterval was called with indices outside the
 *          range of data present in DataModel
 * @run main GetSelectedValuesListTest
 */

import javax.swing.SwingUtilities;
import javax.swing.DefaultListModel;
import javax.swing.JList;
import javax.swing.ListSelectionModel;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;


public class GetSelectedValuesListTest {
    public static void main(String[] args) throws Exception {

        SwingUtilities.invokeAndWait(new Runnable() {
            public void run() {
                // Create a JList with 2 elements
                DefaultListModel dlm = new DefaultListModel();
                JList list = new JList<String>(dlm);
                list.setSelectionMode(
                        ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
                dlm.addElement("1");
                dlm.addElement("2");

                // Set the selection interval from 0-2 (3 elements instead
                // of 2). The getSelectedValuesList should return the list of
                // objects present in the list in the given interval
                list.setSelectionInterval(0, 2);
                checkSelection(list, List.of("1", "2"));

                //here the selection interval is set greater than number of
                // elements in list. This should return empty list
                list.setSelectionInterval(4, 10);
                checkSelection(list, Collections.emptyList());

                // This will set the selection interval from 0 to 2 index.
                // The getSelectedValuesList should return the list of
                // objects present in the list in the given interval
                list.getSelectionModel().setSelectionInterval(0, 2);
                checkSelection(list, List.of("1", "2"));
            }
        });
    }

    static void checkSelection(JList list, List<String> selectionList)
            throws RuntimeException
    {
        List<String> listSelection = list.getSelectedValuesList();
        if (!listSelection.equals(selectionList)) {
            System.out.println("Expected: " + selectionList);
            System.out.println("Actual: " + listSelection);
            throw new RuntimeException("Wrong selection from " +
                    "getSelectedValuesList");
        }

        Object[] arraySelection = list.getSelectedValues();
        if (!Arrays.equals(arraySelection, selectionList.toArray())) {
            System.out.println("Expected: " + selectionList);
            System.out.println("Actual: " + Arrays.asList(arraySelection));
            throw new RuntimeException("Wrong selection from " +
                    "getSelectedValues");
        }
    }
}