test/jdk/javax/swing/RangeTest.java

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/* @test
 * @bug 4825182
 * @summary Verifies DefaultBoundedRangeModel.setMinimum() doesn't change extent
 * @run main RangeTest
 */
import javax.swing.DefaultBoundedRangeModel;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

public class RangeTest implements ChangeListener {

    DefaultBoundedRangeModel model;

    static public void main(String s[]) {
        new RangeTest();
    }

    public RangeTest() {
        model = new DefaultBoundedRangeModel(-32768, Integer.MAX_VALUE,
                                             Integer.MIN_VALUE,
                                             Integer.MAX_VALUE);
        model.addChangeListener(this);
        printState("Initial State");
        System.out.println("Set min to -32768");
        int extent = model.getExtent();
        model.setMinimum(-32768);
        if (model.getExtent() != extent) {
            throw new RuntimeException("extent is changed to " + model.getExtent());
        }
    }

    public void stateChanged(ChangeEvent e) {
        printState("... State Changed");
    }

    private void printState(String msg) {
        System.out.println(msg + ": value=" + model.getValue()
                           + ", extent=" + model.getExtent()
                           + ", min=" + model.getMinimum()
                           + ", max=" + model.getMaximum());
    }
}