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TEST needs to binmode the file handle that is reading the TAP, else it
[perl5.git] / t / op / chr.t
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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
8a064bd6 9plan tests => 34;
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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
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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}
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33
34# Check UTF-8.
35
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36sub hexes {
37 no warnings 'utf8'; # avoid surrogate and beyond Unicode warnings
38 join(" ",map{sprintf"%02x",$_}unpack("C*",chr($_[0])));
39}
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40
41# The following code points are some interesting steps in UTF-8.
42is(hexes( 0x100), "c4 80");
43is(hexes( 0x7FF), "df bf");
44is(hexes( 0x800), "e0 a0 80");
45is(hexes( 0xFFF), "e0 bf bf");
46is(hexes( 0x1000), "e1 80 80");
47is(hexes( 0xCFFF), "ec bf bf");
48is(hexes( 0xD000), "ed 80 80");
49is(hexes( 0xD7FF), "ed 9f bf");
50is(hexes( 0xD800), "ed a0 80"); # not strict utf-8 (surrogate area begin)
51is(hexes( 0xDFFF), "ed bf bf"); # not strict utf-8 (surrogate area end)
52is(hexes( 0xE000), "ee 80 80");
53is(hexes( 0xFFFF), "ef bf bf");
54is(hexes( 0x10000), "f0 90 80 80");
55is(hexes( 0x3FFFF), "f0 bf bf bf");
56is(hexes( 0x40000), "f1 80 80 80");
57is(hexes( 0xFFFFF), "f3 bf bf bf");
58is(hexes(0x100000), "f4 80 80 80");
59is(hexes(0x10FFFF), "f4 8f bf bf"); # Unicode (4.1) last code point
60is(hexes(0x110000), "f4 90 80 80");
61is(hexes(0x1FFFFF), "f7 bf bf bf"); # last four byte encoding
62is(hexes(0x200000), "f8 88 80 80 80");
63