public void testGetIndex() {
DefaultKeyedValues v1 = new DefaultKeyedValues();
assertEquals(-1, v1.getIndex("K1"));
DefaultKeyedValues v2 = new DefaultKeyedValues();
v2.addValue("K1", new Integer(1));
v2.addValue("K2", new Integer(2));
v2.addValue("K3", new Integer(3));
assertEquals(2, v2.getIndex("K3"));
// try null