Test : var ss = new String("String123456EndString");
ss.substring(3,4):  i
ss.substring():  String123456EndString
ss.substring(6,2):  ring
ss.substring(-6,2):  St
ss.substr(-6,2):  St
ss.substr(-1,4):  g
ss.slice(2, 7):  ring1
ss.slice():  String123456EndString
Test : var ss = new String("a");
ss.substring(3,4):  
ss.substring():  a
ss.substring(6,2):  
ss.substring(-6,2):  a
ss.substr(-6,2):  a
ss.substr(-1,4):  a
3
ss.slice(2, 7):  
ss.slice():  a
3
Test : var ss = new String("abcdefg123456qweeeeaatt");
ss.replace():  abcdef******3456qweeeeaatt
Test : var ss = new String("abcdefg1" + "23456qweeeeaatt");
ss.replace():  abcdef+++++3456qweeeeaatt
Test : var ss = new String("abcdefg123456qweeeeaatt");
ss.indexOf("g123"):  6
Test : var ss = new String("abcdefg1" + "23456qweeeeaatt");
ss.indexOf("g123"):  6
Test : var ss = new String("0123456789" + "abcde" + "" + "fghijk" + "lmnoprs");
ss.indexOf("89ab", 4):  8
ss.indexOf("def", 11):  13
ss.indexOf("klm", 15):  20
Test : var ss = new String("0123" + "0123456789" + "" + "01234567" + "234567");
ss.indexOf("0123012"):  0
ss.indexOf("23", 1):  2
ss.indexOf("23", 5):  6
ss.indexOf("23", 10):  16
Test : var ss = new String("0123" + "0123456789" + "" + "hideundefined01234567" + "234567");
ss.indexOf():  18
Test : var ss = new String("aaccca" + "bbcccb" +"cccc"+"0123" + "0123456789" + "" + "hideundefined01234567" + "234567");
ss.indexOf("6789" + "" + "hideundefined01234567" + "2345", 2):  26
Test : var ss = new String("abcdefg123456qweeeeaatt");
ss.lastIndexOf("g123"):  6
Test : var ss = new String("abcdefg1" + "23456qweeeeaatt");
ss.lastIndexOf("g123"):  6
Test : var ss = new String("0123456789" + "abcde" + "" + "fghijk" + "lmnoprs");
ss.lastIndexOf("89ab", 4):  -1
ss.lastIndexOf("def", 18):  13
ss.lastIndexOf("klm", 15):  -1
Test : var ss = new String("0123" + "0123456789" + "" + "01234567" + "234567");
ss.lastIndexOf("0123012"):  0
ss.lastIndexOf("23", 1):  -1
ss.lastIndexOf("23", 5):  2
ss.lastIndexOf("23", 10):  6
Test : var ss = new String("0123" + "0123456789" + "" + "hideundefined01234567" + "234567");
ss.lastIndexOf():  18
Test : var ss = new String("String123456EndString");
ss.search("234"):  7
ss.search(/234/):  7
3
Test : var ss = new String("AAAAAAAAAAbbbbbbbbbb");
ss.toLowerCase():  aaaaaaaaaabbbbbbbbbb
Test big string
ss.toUpperCase():  AAAAAAAAAABBBBBBBBBBAAAAAAAAAABBBBBBBBBBAAAAAAAAAABBBBBBBBBBAAAAAAAAAABBBBBBBBBBAAAAAAAAAABBBBBBBBBBAAAAAAAAAABBBBBBBBBBAAAAAAAAAABBBBBBBBBBAAAAAAAAAABBBBBBBBBBAAAAAAAAAABBBBBBBBBBAAAAAAAAAABBBBBBBBBBAAAAAAAAAABBBBBBBBBBAAAAAAAAAABBBBBBBBBB
3