assertEquals( 4, new_value );
assertEquals( 4, map.get( KEY_ONE ) );
new_value = map.adjustOrPutValue( KEY_TWO, 1, 100 );
assertEquals( 100, new_value );
assertTrue( map.containsKey( KEY_TWO ) );
assertEquals( 100, map.get( KEY_TWO ) );
new_value = map.adjustOrPutValue( KEY_TWO, 1, 100 );
assertEquals( 101, new_value );
assertEquals( 101, map.get( KEY_TWO ) );