11 is(lc(undef), "", "lc(undef) is ''");
12 is(lcfirst(undef), "", "lcfirst(undef) is ''");
13 is(uc(undef), "", "uc(undef) is ''");
14 is(ucfirst(undef), "", "ucfirst(undef) is ''");
19 is("\Q$a\E." , "HELLO\\.\\*\\ world.", '\Q\E HELLO.* world');
20 is("\u$a" , "HELLO\.\* world", '\u');
21 is("\l$a" , "hELLO\.\* world", '\l');
22 is("\U$a" , "HELLO\.\* WORLD", '\U');
23 is("\L$a" , "hello\.\* world", '\L');
25 is(quotemeta($a) , "HELLO\\.\\*\\ world", 'quotemeta');
26 is(ucfirst($a) , "HELLO\.\* world", 'ucfirst');
27 is(lcfirst($a) , "hELLO\.\* world", 'lcfirst');
28 is(uc($a) , "HELLO\.\* WORLD", 'uc');
29 is(lc($a) , "hello\.\* world", 'lc');
31 is("\Q$b\E." , "hello\\.\\*\\ WORLD.", '\Q\E hello.* WORLD');
32 is("\u$b" , "Hello\.\* WORLD", '\u');
33 is("\l$b" , "hello\.\* WORLD", '\l');
34 is("\U$b" , "HELLO\.\* WORLD", '\U');
35 is("\L$b" , "hello\.\* world", '\L');
37 is(quotemeta($b) , "hello\\.\\*\\ WORLD", 'quotemeta');
38 is(ucfirst($b) , "Hello\.\* WORLD", 'ucfirst');
39 is(lcfirst($b) , "hello\.\* WORLD", 'lcfirst');
40 is(uc($b) , "HELLO\.\* WORLD", 'uc');
41 is(lc($b) , "hello\.\* world", 'lc');
43 # \x{100} is LATIN CAPITAL LETTER A WITH MACRON; its bijective lowercase is
44 # \x{101}, LATIN SMALL LETTER A WITH MACRON.
46 $a = "\x{100}\x{101}Aa";
47 $b = "\x{101}\x{100}aA";
49 is("\Q$a\E." , "\x{100}\x{101}Aa.", '\Q\E \x{100}\x{101}Aa');
50 is("\u$a" , "\x{100}\x{101}Aa", '\u');
51 is("\l$a" , "\x{101}\x{101}Aa", '\l');
52 is("\U$a" , "\x{100}\x{100}AA", '\U');
53 is("\L$a" , "\x{101}\x{101}aa", '\L');
55 is(quotemeta($a) , "\x{100}\x{101}Aa", 'quotemeta');
56 is(ucfirst($a) , "\x{100}\x{101}Aa", 'ucfirst');
57 is(lcfirst($a) , "\x{101}\x{101}Aa", 'lcfirst');
58 is(uc($a) , "\x{100}\x{100}AA", 'uc');
59 is(lc($a) , "\x{101}\x{101}aa", 'lc');
61 is("\Q$b\E." , "\x{101}\x{100}aA.", '\Q\E \x{101}\x{100}aA');
62 is("\u$b" , "\x{100}\x{100}aA", '\u');
63 is("\l$b" , "\x{101}\x{100}aA", '\l');
64 is("\U$b" , "\x{100}\x{100}AA", '\U');
65 is("\L$b" , "\x{101}\x{101}aa", '\L');
67 is(quotemeta($b) , "\x{101}\x{100}aA", 'quotemeta');
68 is(ucfirst($b) , "\x{100}\x{100}aA", 'ucfirst');
69 is(lcfirst($b) , "\x{101}\x{100}aA", 'lcfirst');
70 is(uc($b) , "\x{100}\x{100}AA", 'uc');
71 is(lc($b) , "\x{101}\x{101}aa", 'lc');
73 # \x{DF} is LATIN SMALL LETTER SHARP S, its uppercase is SS or \x{53}\x{53};
74 # \x{149} is LATIN SMALL LETTER N PRECEDED BY APOSTROPHE, its uppercase is
75 # \x{2BC}\x{E4} or MODIFIER LETTER APOSTROPHE and N.
77 is(latin1_to_native("\U\x{DF}aB\x{149}cD"), latin1_to_native("SSAB\x{2BC}NCD"),
78 "multicharacter uppercase");
80 # The \x{DF} is its own lowercase, ditto for \x{149}.
81 # There are no single character -> multiple characters lowercase mappings.
83 is(latin1_to_native("\L\x{DF}aB\x{149}cD"), latin1_to_native("\x{DF}ab\x{149}cd"),
84 "multicharacter lowercase");
86 # titlecase is used for \u / ucfirst.
88 # \x{587} is ARMENIAN SMALL LIGATURE ECH YIWN and its titlecase is
89 # \x{535}\x{582} ARMENIAN CAPITAL LETTER ECH + ARMENIAN SMALL LETTER YIWN
90 # while its lowercase is
92 # and its uppercase is
93 # \x{535}\x{552} ARMENIAN CAPITAL LETTER ECH + ARMENIAN CAPITAL LETTER YIWN
97 is("\L\x{587}" , "\x{587}", "ligature lowercase");
98 is("\u\x{587}" , "\x{535}\x{582}", "ligature titlecase");
99 is("\U\x{587}" , "\x{535}\x{552}", "ligature uppercase");
101 # mktables had problems where many-to-one case mappings didn't work right.
102 # The lib/uni/fold.t should give the fourth folding, "casefolding", a good
103 # workout (one cannot directly get that from Perl).
104 # \x{01C4} is LATIN CAPITAL LETTER DZ WITH CARON
105 # \x{01C5} is LATIN CAPITAL LETTER D WITH SMALL LETTER Z WITH CARON
106 # \x{01C6} is LATIN SMALL LETTER DZ WITH CARON
107 # \x{03A3} is GREEK CAPITAL LETTER SIGMA
108 # \x{03C2} is GREEK SMALL LETTER FINAL SIGMA
109 # \x{03C3} is GREEK SMALL LETTER SIGMA
111 is(lc("\x{1C4}") , "\x{1C6}", "U+01C4 lc is U+01C6");
112 is(lc("\x{1C5}") , "\x{1C6}", "U+01C5 lc is U+01C6, too");
114 is(ucfirst("\x{3C2}") , "\x{3A3}", "U+03C2 ucfirst is U+03A3");
115 is(ucfirst("\x{3C3}") , "\x{3A3}", "U+03C3 ucfirst is U+03A3, too");
117 is(uc("\x{1C5}") , "\x{1C4}", "U+01C5 uc is U+01C4");
118 is(uc("\x{1C6}") , "\x{1C4}", "U+01C6 uc is U+01C4, too");
120 # #18107: A host of bugs involving [ul]c{,first}. AMS 20021106
121 $a = "\x{3c3}foo.bar"; # \x{3c3} == GREEK SMALL LETTER SIGMA.
122 $b = "\x{3a3}FOO.BAR"; # \x{3a3} == GREEK CAPITAL LETTER SIGMA.
124 ($c = $b) =~ s/(\w+)/lc($1)/ge;
125 is($c , $a, "Using s///e to change case.");
127 ($c = $a) =~ s/(\p{IsWord}+)/uc($1)/ge;
128 is($c , $b, "Using s///e to change case.");
130 ($c = $b) =~ s/(\p{IsWord}+)/lcfirst($1)/ge;
131 is($c , "\x{3c3}FOO.bAR", "Using s///e to change case.");
133 ($c = $a) =~ s/(\p{IsWord}+)/ucfirst($1)/ge;
134 is($c , "\x{3a3}foo.Bar", "Using s///e to change case.");
136 # #18931: perl5.8.0 bug in \U..\E processing
137 # Test case from Nicholas Clark.
143 is(uc($1), "ABCDEFGH", "[perl #18931]");
150 $a =~ s/^(\s*)(\w*)/$1\u$2/;
151 is($a, v10, "[perl #18857]");
156 # [perl #38619] Bug in lc and uc (interaction between UTF-8, substr, and lc/uc)
158 for ("a\x{100}", "xyz\x{100}") {
159 is(substr(uc($_), 0), uc($_), "[perl #38619] uc");
161 for ("A\x{100}", "XYZ\x{100}") {
162 is(substr(lc($_), 0), lc($_), "[perl #38619] lc");
164 for ("a\x{100}", "ßyz\x{100}") { # ß to Ss (different length)
165 is(substr(ucfirst($_), 0), ucfirst($_), "[perl #38619] ucfirst");
168 # Related to [perl #38619]
169 # the original report concerns PERL_MAGIC_utf8.
170 # these cases concern PERL_MAGIC_regex_global.
172 for (map { $_ } "a\x{100}", "abc\x{100}", "\x{100}") {
173 chop; # get ("a", "abc", "") in utf8
174 my $return = uc($_) =~ /\G(.?)/g;
175 my $result = $return ? $1 : "not";
176 my $expect = (uc($_) =~ /(.?)/g)[0];
177 is($return, 1, "[perl #38619]");
178 is($result, $expect, "[perl #38619]");
181 for (map { $_ } "A\x{100}", "ABC\x{100}", "\x{100}") {
182 chop; # get ("A", "ABC", "") in utf8
183 my $return = lc($_) =~ /\G(.?)/g;
184 my $result = $return ? $1 : "not";
185 my $expect = (lc($_) =~ /(.?)/g)[0];
186 is($return, 1, "[perl #38619]");
187 is($result, $expect, "[perl #38619]");
190 for (1, 4, 9, 16, 25) {
191 is(uc "\x{03B0}" x $_, "\x{3a5}\x{308}\x{301}" x $_,
192 'uc U+03B0 grows threefold');
194 is(lc "\x{0130}" x $_, "i\x{307}" x $_, 'lc U+0130 grows');
204 # new in Unicode 5.1.0
205 is(lc("\x{1E9E}"), "\x{df}", "lc(LATIN CAPITAL LETTER SHARP S)");