1#!./perl 2 3BEGIN { 4 chdir 't' if -d 't'; 5 @INC = qw(. ../lib); # ../lib needed for test.deparse 6 require "test.pl"; 7} 8 9plan tests => 34; 10 11# Note that t/op/ord.t already tests for chr() <-> ord() rountripping. 12 13# Don't assume ASCII. 14 15is(chr(ord("A")), "A"); 16 17is(chr( 0), "\x00"); 18is(chr(127), "\x7F"); 19is(chr(128), "\x80"); 20is(chr(255), "\xFF"); 21 22is(chr(-0.1), "\x{FFFD}"); # The U+FFFD Unicode replacement character. 23is(chr(-1 ), "\x{FFFD}"); 24is(chr(-2 ), "\x{FFFD}"); 25is(chr(-3.0), "\x{FFFD}"); 26{ 27 use bytes; # Backward compatibility. 28 is(chr(-0.1), "\x00"); 29 is(chr(-1 ), "\xFF"); 30 is(chr(-2 ), "\xFE"); 31 is(chr(-3.0), "\xFD"); 32} 33 34# Check UTF-8 (not UTF-EBCDIC). 35SKIP: { 36 skip "no UTF-8 on EBCDIC", 21 if chr(193) eq 'A'; 37 38sub hexes { 39 no warnings 'utf8'; # avoid surrogate and beyond Unicode warnings 40 join(" ",unpack "U0 (H2)*", chr $_[0]); 41} 42 43# The following code points are some interesting steps in UTF-8. 44 is(hexes( 0x100), "c4 80"); 45 is(hexes( 0x7FF), "df bf"); 46 is(hexes( 0x800), "e0 a0 80"); 47 is(hexes( 0xFFF), "e0 bf bf"); 48 is(hexes( 0x1000), "e1 80 80"); 49 is(hexes( 0xCFFF), "ec bf bf"); 50 is(hexes( 0xD000), "ed 80 80"); 51 is(hexes( 0xD7FF), "ed 9f bf"); 52 is(hexes( 0xD800), "ed a0 80"); # not strict utf-8 (surrogate area begin) 53 is(hexes( 0xDFFF), "ed bf bf"); # not strict utf-8 (surrogate area end) 54 is(hexes( 0xE000), "ee 80 80"); 55 is(hexes( 0xFFFF), "ef bf bf"); 56 is(hexes( 0x10000), "f0 90 80 80"); 57 is(hexes( 0x3FFFF), "f0 bf bf bf"); 58 is(hexes( 0x40000), "f1 80 80 80"); 59 is(hexes( 0xFFFFF), "f3 bf bf bf"); 60 is(hexes(0x100000), "f4 80 80 80"); 61 is(hexes(0x10FFFF), "f4 8f bf bf"); # Unicode (4.1) last code point 62 is(hexes(0x110000), "f4 90 80 80"); 63 is(hexes(0x1FFFFF), "f7 bf bf bf"); # last four byte encoding 64 is(hexes(0x200000), "f8 88 80 80 80"); 65} 66