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Disallow omitting % and @ on hash and array names
[perl5.git] / t / op / each.t
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1#!./perl
2
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3BEGIN {
4 chdir 't' if -d 't';
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5 @INC = '../lib';
6 require './test.pl';
c4d5f83a 7}
f9a63242 8
b5adc3e5 9plan tests => 57;
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10
11$h{'abc'} = 'ABC';
12$h{'def'} = 'DEF';
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13$h{'jkl','mno'} = "JKL\034MNO";
14$h{'a',2,3,4,5} = join("\034",'A',2,3,4,5);
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15$h{'a'} = 'A';
16$h{'b'} = 'B';
17$h{'c'} = 'C';
18$h{'d'} = 'D';
19$h{'e'} = 'E';
20$h{'f'} = 'F';
21$h{'g'} = 'G';
22$h{'h'} = 'H';
23$h{'i'} = 'I';
24$h{'j'} = 'J';
25$h{'k'} = 'K';
26$h{'l'} = 'L';
27$h{'m'} = 'M';
28$h{'n'} = 'N';
29$h{'o'} = 'O';
30$h{'p'} = 'P';
31$h{'q'} = 'Q';
32$h{'r'} = 'R';
33$h{'s'} = 'S';
34$h{'t'} = 'T';
35$h{'u'} = 'U';
36$h{'v'} = 'V';
37$h{'w'} = 'W';
38$h{'x'} = 'X';
39$h{'y'} = 'Y';
40$h{'z'} = 'Z';
41
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42@keys = keys %h;
43@values = values %h;
8d063cd8 44
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45is ($#keys, 29, "keys");
46is ($#values, 29, "values");
8d063cd8 47
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48$i = 0; # stop -w complaints
49
50while (($key,$value) = each(%h)) {
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51 if ($key eq $keys[$i] && $value eq $values[$i]
52 && (('a' lt 'A' && $key lt $value) || $key gt $value)) {
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53 $key =~ y/a-z/A-Z/;
54 $i++ if $key eq $value;
55 }
56}
57
59e20782 58is ($i, 30, "each count");
378cc40b 59
a687059c 60@keys = ('blurfl', keys(%h), 'dyick');
59e20782 61is ($#keys, 31, "added a key");
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62
63$size = ((split('/',scalar %h))[1]);
64keys %h = $size * 5;
65$newsize = ((split('/',scalar %h))[1]);
59e20782 66is ($newsize, $size * 8, "resize");
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67keys %h = 1;
68$size = ((split('/',scalar %h))[1]);
59e20782 69is ($size, $newsize, "same size");
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70%h = (1,1);
71$size = ((split('/',scalar %h))[1]);
59e20782 72is ($size, $newsize, "still same size");
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73undef %h;
74%h = (1,1);
75$size = ((split('/',scalar %h))[1]);
59e20782 76is ($size, 8, "size 8");
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77
78# test scalar each
79%hash = 1..20;
80$total = 0;
81$total += $key while $key = each %hash;
59e20782 82is ($total, 100, "test scalar each");
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83
84for (1..3) { @foo = each %hash }
85keys %hash;
86$total = 0;
87$total += $key while $key = each %hash;
59e20782 88is ($total, 100, "test scalar keys resets iterator");
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89
90for (1..3) { @foo = each %hash }
91$total = 0;
92$total += $key while $key = each %hash;
59e20782 93isnt ($total, 100, "test iterator of each is being maintained");
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94
95for (1..3) { @foo = each %hash }
96values %hash;
97$total = 0;
98$total += $key while $key = each %hash;
59e20782 99is ($total, 100, "test values keys resets iterator");
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100
101$size = (split('/', scalar %hash))[1];
102keys(%hash) = $size / 2;
59e20782 103is ($size, (split('/', scalar %hash))[1]);
3524d3b9 104keys(%hash) = $size + 100;
59e20782 105isnt ($size, (split('/', scalar %hash))[1]);
3524d3b9 106
59e20782 107is (keys(%hash), 10, "keys (%hash)");
3524d3b9 108
677fb045 109@tests = (&next_test, &next_test, &next_test);
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110{
111 package Obj;
677fb045 112 sub DESTROY { print "ok $::tests[1] # DESTROY called\n"; }
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113 {
114 my $h = { A => bless [], __PACKAGE__ };
115 while (my($k,$v) = each %$h) {
677fb045 116 print "ok $::tests[0]\n" if $k eq 'A' and ref($v) eq 'Obj';
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117 }
118 }
677fb045 119 print "ok $::tests[2]\n";
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120}
121
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122# Check for Unicode hash keys.
123%u = ("\x{12}", "f", "\x{123}", "fo", "\x{1234}", "foo");
124$u{"\x{12345}"} = "bar";
b851fbc1 125@u{"\x{10FFFD}"} = "zap";
f2b0cce7 126
677fb045 127my %u2;
f2b0cce7 128foreach (keys %u) {
59e20782 129 is (length(), 1, "Check length of " . _qq $_);
677fb045 130 $u2{$_} = $u{$_};
f2b0cce7 131}
677fb045 132ok (eq_hash(\%u, \%u2), "copied unicode hash keys correctly?");
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133
134$a = "\xe3\x81\x82"; $A = "\x{3042}";
135%b = ( $a => "non-utf8");
136%u = ( $A => "utf8");
137
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138is (exists $b{$A}, '', "utf8 key in bytes hash");
139is (exists $u{$a}, '', "bytes key in utf8 hash");
169da838 140print "# $b{$_}\n" for keys %b; # Used to core dump before change #8056.
677fb045 141pass ("if we got here change 8056 worked");
169da838 142print "# $u{$_}\n" for keys %u; # Used to core dump before change #8056.
677fb045 143pass ("change 8056 is thanks to Inaba Hiroto");
f9a63242 144
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145# on EBCDIC chars are mapped differently so pick something that needs encoding
146# there too.
147$d = pack("U*", 0xe3, 0x81, 0xAF);
169da838 148{ use bytes; $ol = bytes::length($d) }
59e20782 149cmp_ok ($ol, '>', 3, "check encoding on EBCDIC");
ef9edfd0 150%u = ($d => "downgrade");
f9a63242 151for (keys %u) {
59e20782 152 is (length, 3, "check length");
9caa78f3 153 is ($_, pack("U*", 0xe3, 0x81, 0xAF), "check value");
f9a63242 154}
ef9edfd0 155{
59e20782 156 { use bytes; is (bytes::length($d), $ol) }
ef9edfd0 157}
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158
159{
160 my %u;
161 my $u0 = pack("U0U", 0x00FF);
162 my $b0 = "\xC3\xBF"; # 0xCB 0xBF is U+00FF in UTF-8
163 my $u1 = pack("U0U", 0x0100);
164 my $b1 = "\xC4\x80"; # 0xC4 0x80 is U+0100 in UTF-8
165
166 $u{$u0} = 1;
167 $u{$b0} = 2;
168 $u{$u1} = 3;
169 $u{$b1} = 4;
170
171 is(scalar keys %u, 4, "four different Unicode keys");
172 is($u{$u0}, 1, "U+00FF -> 1");
173 is($u{$b0}, 2, "U+00C3 U+00BF -> 2");
174 is($u{$u1}, 3, "U+0100 -> 3 ");
175 is($u{$b1}, 4, "U+00C4 U+0080 -> 4");
176}
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177
178# test for syntax errors
179for my $k (qw(each keys values)) {
180 eval $k;
181 like($@, qr/^Not enough arguments for $k/, "$k demands argument");
182}
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183
184{
185 my %foo=(1..10);
186 my ($k,$v);
187 my $count=keys %foo;
188 my ($k1,$v1)=each(%foo);
189 my $yes = 0;
190 if (%foo) { $yes++ }
191 my ($k2,$v2)=each(%foo);
192 my $rest=0;
193 while (each(%foo)) {$rest++};
194 is($yes,1,"if(%foo) was true");
195 isnt($k1,$k2,"if(%foo) didnt mess with each (key)");
196 isnt($v1,$v2,"if(%foo) didnt mess with each (value)");
197 is($rest,3,"Got the expect number of keys");
198 my $hsv=1 && %foo;
199 like($hsv,'/',"Got bucket stats from %foo in scalar assignment context");
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200 my @arr=%foo&&%foo;
201 is(@arr,10,"Got expected number of elements in list context");
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202}
203{
204 our %foo=(1..10);
205 my ($k,$v);
206 my $count=keys %foo;
207 my ($k1,$v1)=each(%foo);
208 my $yes = 0;
209 if (%foo) { $yes++ }
210 my ($k2,$v2)=each(%foo);
211 my $rest=0;
212 while (each(%foo)) {$rest++};
213 is($yes,1,"if(%foo) was true");
214 isnt($k1,$k2,"if(%foo) didnt mess with each (key)");
215 isnt($v1,$v2,"if(%foo) didnt mess with each (value)");
216 is($rest,3,"Got the expect number of keys");
217 my $hsv=1 && %foo;
218 like($hsv,'/',"Got bucket stats from %foo in scalar assignment context");
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219 my @arr=%foo&&%foo;
220 is(@arr,10,"Got expected number of elements in list context");
867fa1e2 221}
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222{
223 # make sure a deleted active iterator gets freed timely, even if the
224 # hash is otherwise empty
225
226 package Single;
227
228 my $c = 0;
229 sub DESTROY { $c++ };
230
231 {
232 my %h = ("a" => bless []);
233 my ($k,$v) = each %h;
234 delete $h{$k};
235 ::is($c, 0, "single key not yet freed");
236 }
237 ::is($c, 1, "single key now freed");
238}
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239
240{
241 # Make sure each() does not leave the iterator in an inconsistent state
242 # (RITER set to >= 0, with EITER null) if the active iterator is
243 # deleted, leaving the hash apparently empty.
244 my %h;
245 $h{1} = 2;
246 each %h;
247 delete $h{1};
248 each %h;
249 $h{1}=2;
250 is join ("-", each %h), '1-2',
251 'each on apparently empty hash does not leave RITER set';
252}
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253{
254 my $warned= 0;
255 local $SIG{__WARN__}= sub {
256 /\QUse of each() on hash after insertion without resetting hash iterator results in undefined behavior\E/
257 and $warned++ for @_;
258 };
259 my %h= map { $_ => $_ } "A".."F";
260 while (my ($k, $v)= each %h) {
261 $h{"$k$k"}= $v;
262 }
263 ok($warned,"each() after insert produces warnings");
264 no warnings 'internal';
265 $warned= 0;
266 %h= map { $_ => $_ } "A".."F";
267 while (my ($k, $v)= each %h) {
268 $h{"$k$k"}= $v;
269 }
270 ok(!$warned, "no warnings 'internal' silences each() after insert warnings");
271}