* @param harness the test harness (<code>null</code> not permitted).
*/
public void test(TestHarness harness)
{
JComboBox jcb = new JComboBox(new Object[] {"A", "B", "C"});
Icon icon = new MetalComboBoxIcon();
MetalComboBoxButton b = new MetalComboBoxButton(jcb, icon,
new CellRendererPane(), new JList());
harness.check(!b.isFocusTraversable());
}