list.add("item2");
assertEquals(0, list.getSelectedItems().length);
as.addAccessibleSelection(1);
assertEquals(1, list.getSelectedItems().length);
assertEquals("item2", list.getSelectedItem());
as.addAccessibleSelection(0);
assertEquals(1, list.getSelectedItems().length);
assertEquals("item1", list.getSelectedItem());
list.setMultipleMode(true);
as.addAccessibleSelection(1);
assertEquals(2, list.getSelectedItems().length);