// bbb,16,19 => b,16,19
// aa,20,22 => a,20,22
//
public void testTokenStream() throws Exception {
String testString = "h i j k ll cccc bbb aa";
CharFilter cs = new MappingCharFilter( normMap, new StringReader( testString ) );
TokenStream ts = new MockTokenizer(cs, MockTokenizer.WHITESPACE, false);
assertTokenStreamContents(ts,
new String[]{"i","i","jj","kkk","llll","cc","b","a"},
new int[]{0,2,4,6,8,11,16,20},
new int[]{1,3,5,7,10,15,19,22},