Commit | Line | Data |
---|---|---|
6515510f | 1 | #!./perl -T |
54310121 | 2 | |
3 | BEGIN { | |
6515510f AT |
4 | if ($ENV{PERL_CORE}) { |
5 | chdir 't' if -d 't'; | |
6 | @INC = '../lib'; | |
7 | } | |
54310121 | 8 | } |
9 | ||
9f1b1f2d | 10 | use warnings; |
69e7dc3c | 11 | use vars qw{ @warnings $fagwoosh $putt $kloong}; |
54310121 | 12 | BEGIN { # ...and save 'em for later |
13 | $SIG{'__WARN__'} = sub { push @warnings, @_ } | |
14 | } | |
803b07a7 | 15 | END { print STDERR @warnings } |
54310121 | 16 | |
54310121 | 17 | |
18 | use strict; | |
6515510f | 19 | use Test::More tests => 97; |
10a0e555 HS |
20 | my $TB = Test::More->builder; |
21 | ||
22 | BEGIN { use_ok('constant'); } | |
54310121 | 23 | |
54310121 | 24 | use constant PI => 4 * atan2 1, 1; |
25 | ||
10a0e555 HS |
26 | ok defined PI, 'basic scalar constant'; |
27 | is substr(PI, 0, 7), '3.14159', ' in substr()'; | |
54310121 | 28 | |
29 | sub deg2rad { PI * $_[0] / 180 } | |
30 | ||
31 | my $ninety = deg2rad 90; | |
32 | ||
10a0e555 | 33 | cmp_ok abs($ninety - 1.5707), '<', 0.0001, ' in math expression'; |
54310121 | 34 | |
35 | use constant UNDEF1 => undef; # the right way | |
36 | use constant UNDEF2 => ; # the weird way | |
37 | use constant 'UNDEF3' ; # the 'short' way | |
38 | use constant EMPTY => ( ) ; # the right way for lists | |
39 | ||
10a0e555 HS |
40 | is UNDEF1, undef, 'right way to declare an undef'; |
41 | is UNDEF2, undef, ' weird way'; | |
42 | is UNDEF3, undef, ' short way'; | |
43 | ||
44 | # XXX Why is this way different than the other ones? | |
54310121 | 45 | my @undef = UNDEF1; |
10a0e555 HS |
46 | is @undef, 1; |
47 | is $undef[0], undef; | |
48 | ||
54310121 | 49 | @undef = UNDEF2; |
10a0e555 | 50 | is @undef, 0; |
54310121 | 51 | @undef = UNDEF3; |
10a0e555 | 52 | is @undef, 0; |
54310121 | 53 | @undef = EMPTY; |
10a0e555 | 54 | is @undef, 0; |
54310121 | 55 | |
56 | use constant COUNTDOWN => scalar reverse 1, 2, 3, 4, 5; | |
57 | use constant COUNTLIST => reverse 1, 2, 3, 4, 5; | |
58 | use constant COUNTLAST => (COUNTLIST)[-1]; | |
59 | ||
10a0e555 | 60 | is COUNTDOWN, '54321'; |
54310121 | 61 | my @cl = COUNTLIST; |
10a0e555 HS |
62 | is @cl, 5; |
63 | is COUNTDOWN, join '', @cl; | |
64 | is COUNTLAST, 1; | |
65 | is((COUNTLIST)[1], 4); | |
54310121 | 66 | |
67 | use constant ABC => 'ABC'; | |
10a0e555 | 68 | is "abc${\( ABC )}abc", "abcABCabc"; |
54310121 | 69 | |
9d116dd7 | 70 | use constant DEF => 'D', 'E', chr ord 'F'; |
10a0e555 | 71 | is "d e f @{[ DEF ]} d e f", "d e f D E F d e f"; |
54310121 | 72 | |
73 | use constant SINGLE => "'"; | |
74 | use constant DOUBLE => '"'; | |
75 | use constant BACK => '\\'; | |
76 | my $tt = BACK . SINGLE . DOUBLE ; | |
10a0e555 | 77 | is $tt, q(\\'"); |
54310121 | 78 | |
79 | use constant MESS => q('"'\\"'"\\); | |
10a0e555 HS |
80 | is MESS, q('"'\\"'"\\); |
81 | is length(MESS), 8; | |
54310121 | 82 | |
83 | use constant TRAILING => '12 cats'; | |
84 | { | |
6515510f | 85 | local $^W; |
10a0e555 | 86 | cmp_ok TRAILING, '==', 12; |
54310121 | 87 | } |
10a0e555 | 88 | is TRAILING, '12 cats'; |
54310121 | 89 | |
c1b0f331 | 90 | use constant LEADING => " \t1234"; |
10a0e555 HS |
91 | cmp_ok LEADING, '==', 1234; |
92 | is LEADING, " \t1234"; | |
54310121 | 93 | |
94 | use constant ZERO1 => 0; | |
95 | use constant ZERO2 => 0.0; | |
96 | use constant ZERO3 => '0.0'; | |
10a0e555 HS |
97 | is ZERO1, '0'; |
98 | is ZERO2, '0'; | |
99 | is ZERO3, '0.0'; | |
54310121 | 100 | |
101 | { | |
102 | package Other; | |
103 | use constant PI => 3.141; | |
104 | } | |
105 | ||
10a0e555 HS |
106 | cmp_ok(abs(PI - 3.1416), '<', 0.0001); |
107 | is Other::PI, 3.141; | |
54310121 | 108 | |
109 | use constant E2BIG => $! = 7; | |
10a0e555 | 110 | cmp_ok E2BIG, '==', 7; |
54310121 | 111 | # This is something like "Arg list too long", but the actual message |
112 | # text may vary, so we can't test much better than this. | |
10a0e555 | 113 | cmp_ok length(E2BIG), '>', 6; |
54310121 | 114 | |
10a0e555 | 115 | is @warnings, 0 or diag join "\n", "unexpected warning", @warnings; |
54310121 | 116 | @warnings = (); # just in case |
117 | undef &PI; | |
10a0e555 HS |
118 | ok @warnings && ($warnings[0] =~ /Constant sub.* undefined/) or |
119 | diag join "\n", "unexpected warning", @warnings; | |
120 | shift @warnings; | |
54310121 | 121 | |
10a0e555 | 122 | is @warnings, 0, "unexpected warning"; |
779c5bc9 | 123 | |
10a0e555 HS |
124 | my $curr_test = $TB->current_test; |
125 | use constant CSCALAR => \"ok 37\n"; | |
126 | use constant CHASH => { foo => "ok 38\n" }; | |
127 | use constant CARRAY => [ undef, "ok 39\n" ]; | |
779c5bc9 GS |
128 | use constant CCODE => sub { "ok $_[0]\n" }; |
129 | ||
6515510f AT |
130 | my $output = $TB->output ; |
131 | print $output ${+CSCALAR}; | |
132 | print $output CHASH->{foo}; | |
133 | print $output CARRAY->[1]; | |
134 | print $output CCODE->($curr_test+4); | |
10a0e555 HS |
135 | |
136 | $TB->current_test($curr_test+4); | |
137 | ||
779c5bc9 | 138 | eval q{ CCODE->{foo} }; |
10a0e555 HS |
139 | ok scalar($@ =~ /^Constant is not a HASH/); |
140 | ||
83763826 GS |
141 | |
142 | # Allow leading underscore | |
143 | use constant _PRIVATE => 47; | |
10a0e555 | 144 | is _PRIVATE, 47; |
83763826 GS |
145 | |
146 | # Disallow doubled leading underscore | |
147 | eval q{ | |
148 | use constant __DISALLOWED => "Oops"; | |
149 | }; | |
10a0e555 | 150 | like $@, qr/begins with '__'/; |
83763826 GS |
151 | |
152 | # Check on declared() and %declared. This sub should be EXACTLY the | |
153 | # same as the one quoted in the docs! | |
154 | sub declared ($) { | |
155 | use constant 1.01; # don't omit this! | |
156 | my $name = shift; | |
157 | $name =~ s/^::/main::/; | |
158 | my $pkg = caller; | |
159 | my $full_name = $name =~ /::/ ? $name : "${pkg}::$name"; | |
160 | $constant::declared{$full_name}; | |
161 | } | |
162 | ||
10a0e555 HS |
163 | ok declared 'PI'; |
164 | ok $constant::declared{'main::PI'}; | |
83763826 | 165 | |
10a0e555 HS |
166 | ok !declared 'PIE'; |
167 | ok !$constant::declared{'main::PIE'}; | |
83763826 GS |
168 | |
169 | { | |
170 | package Other; | |
171 | use constant IN_OTHER_PACK => 42; | |
10a0e555 HS |
172 | ::ok ::declared 'IN_OTHER_PACK'; |
173 | ::ok $constant::declared{'Other::IN_OTHER_PACK'}; | |
174 | ::ok ::declared 'main::PI'; | |
175 | ::ok $constant::declared{'main::PI'}; | |
83763826 GS |
176 | } |
177 | ||
10a0e555 HS |
178 | ok declared 'Other::IN_OTHER_PACK'; |
179 | ok $constant::declared{'Other::IN_OTHER_PACK'}; | |
d3a7d8c7 GS |
180 | |
181 | @warnings = (); | |
182 | eval q{ | |
9f1b1f2d | 183 | no warnings; |
6515510f | 184 | #local $^W if $] < 5.006; |
d3a7d8c7 GS |
185 | use warnings 'constant'; |
186 | use constant 'BEGIN' => 1 ; | |
187 | use constant 'INIT' => 1 ; | |
188 | use constant 'CHECK' => 1 ; | |
189 | use constant 'END' => 1 ; | |
190 | use constant 'DESTROY' => 1 ; | |
191 | use constant 'AUTOLOAD' => 1 ; | |
192 | use constant 'STDIN' => 1 ; | |
193 | use constant 'STDOUT' => 1 ; | |
194 | use constant 'STDERR' => 1 ; | |
195 | use constant 'ARGV' => 1 ; | |
196 | use constant 'ARGVOUT' => 1 ; | |
197 | use constant 'ENV' => 1 ; | |
198 | use constant 'INC' => 1 ; | |
199 | use constant 'SIG' => 1 ; | |
83b99c4f | 200 | use constant 'UNITCHECK' => 1; |
d3a7d8c7 GS |
201 | }; |
202 | ||
10a0e555 HS |
203 | my @Expected_Warnings = |
204 | ( | |
205 | qr/^Constant name 'BEGIN' is a Perl keyword at/, | |
206 | qr/^Constant subroutine BEGIN redefined at/, | |
207 | qr/^Constant name 'INIT' is a Perl keyword at/, | |
208 | qr/^Constant name 'CHECK' is a Perl keyword at/, | |
209 | qr/^Constant name 'END' is a Perl keyword at/, | |
210 | qr/^Constant name 'DESTROY' is a Perl keyword at/, | |
211 | qr/^Constant name 'AUTOLOAD' is a Perl keyword at/, | |
212 | qr/^Constant name 'STDIN' is forced into package main:: a/, | |
213 | qr/^Constant name 'STDOUT' is forced into package main:: at/, | |
214 | qr/^Constant name 'STDERR' is forced into package main:: at/, | |
215 | qr/^Constant name 'ARGV' is forced into package main:: at/, | |
216 | qr/^Constant name 'ARGVOUT' is forced into package main:: at/, | |
217 | qr/^Constant name 'ENV' is forced into package main:: at/, | |
218 | qr/^Constant name 'INC' is forced into package main:: at/, | |
219 | qr/^Constant name 'SIG' is forced into package main:: at/, | |
83b99c4f | 220 | qr/^Constant name 'UNITCHECK' is a Perl keyword at/, |
10a0e555 | 221 | ); |
6515510f | 222 | |
83b99c4f NC |
223 | unless ($] > 5.009) { |
224 | # Remove the UNITCHECK warning | |
225 | pop @Expected_Warnings; | |
226 | # But keep the count the same | |
227 | push @Expected_Warnings, qr/^$/; | |
228 | push @warnings, ""; | |
229 | } | |
230 | ||
6515510f AT |
231 | # when run under "make test" |
232 | if (@warnings == 16) { | |
233 | push @warnings, ""; | |
234 | push @Expected_Warnings, qr/^$/; | |
235 | } | |
236 | # when run directly: perl -wT -Ilib t/constant.t | |
237 | elsif (@warnings == 17) { | |
238 | splice @Expected_Warnings, 1, 0, | |
239 | qr/^Prototype mismatch: sub main::BEGIN \(\) vs none at/; | |
240 | } | |
241 | # when run directly under 5.6.2: perl -wT -Ilib t/constant.t | |
242 | elsif (@warnings == 15) { | |
243 | splice @Expected_Warnings, 1, 1; | |
244 | push @warnings, "", ""; | |
245 | push @Expected_Warnings, qr/^$/, qr/^$/; | |
246 | } | |
247 | else { | |
248 | my $rule = " -" x 20; | |
249 | diag "/!\\ unexpected case: ", scalar @warnings, " warnings\n$rule\n"; | |
250 | diag map { " $_" } @warnings; | |
251 | diag $rule, $/; | |
252 | } | |
253 | ||
254 | is @warnings, 17; | |
255 | ||
10a0e555 HS |
256 | for my $idx (0..$#warnings) { |
257 | like $warnings[$idx], $Expected_Warnings[$idx]; | |
258 | } | |
6515510f | 259 | |
d3a7d8c7 | 260 | @warnings = (); |
c7206c54 CT |
261 | |
262 | ||
263 | use constant { | |
264 | THREE => 3, | |
265 | FAMILY => [ qw( John Jane Sally ) ], | |
266 | AGES => { John => 33, Jane => 28, Sally => 3 }, | |
267 | RFAM => [ [ qw( John Jane Sally ) ] ], | |
268 | SPIT => sub { shift }, | |
c7206c54 CT |
269 | }; |
270 | ||
10a0e555 HS |
271 | is @{+FAMILY}, THREE; |
272 | is @{+FAMILY}, @{RFAM->[0]}; | |
273 | is FAMILY->[2], RFAM->[0]->[2]; | |
274 | is AGES->{FAMILY->[1]}, 28; | |
275 | is THREE**3, SPIT->(@{+FAMILY}**3); | |
5b673cda AS |
276 | |
277 | # Allow name of digits/underscores only if it begins with underscore | |
278 | { | |
279 | use warnings FATAL => 'constant'; | |
280 | eval q{ | |
281 | use constant _1_2_3 => 'allowed'; | |
282 | }; | |
283 | ok( $@ eq '' ); | |
284 | } | |
69e7dc3c NC |
285 | |
286 | sub slotch (); | |
287 | ||
288 | { | |
289 | my @warnings; | |
290 | local $SIG{'__WARN__'} = sub { push @warnings, @_ }; | |
291 | eval 'use constant slotch => 3; 1' or die $@; | |
292 | ||
293 | is ("@warnings", "", "No warnings if a prototype exists"); | |
294 | ||
295 | my $value = eval 'slotch'; | |
296 | is ($@, ''); | |
297 | is ($value, 3); | |
298 | } | |
299 | ||
300 | sub zit; | |
301 | ||
302 | { | |
303 | my @warnings; | |
304 | local $SIG{'__WARN__'} = sub { push @warnings, @_ }; | |
305 | eval 'use constant zit => 4; 1' or die $@; | |
306 | ||
6515510f | 307 | # empty prototypes are reported differently in different versions |
13e592d2 | 308 | my $no_proto = $] < 5.008004 ? "" : ": none"; |
6515510f | 309 | |
69e7dc3c | 310 | is(scalar @warnings, 1, "1 warning"); |
6515510f | 311 | like ($warnings[0], qr/^Prototype mismatch: sub main::zit$no_proto vs \(\)/, |
69e7dc3c NC |
312 | "about the prototype mismatch"); |
313 | ||
314 | my $value = eval 'zit'; | |
315 | is ($@, ''); | |
316 | is ($value, 4); | |
317 | } | |
318 | ||
319 | $fagwoosh = 'geronimo'; | |
320 | $putt = 'leutwein'; | |
321 | $kloong = 'schlozhauer'; | |
322 | ||
323 | { | |
324 | my @warnings; | |
325 | local $SIG{'__WARN__'} = sub { push @warnings, @_ }; | |
326 | eval 'use constant fagwoosh => 5; 1' or die $@; | |
327 | ||
328 | is ("@warnings", "", "No warnings if the typeglob exists already"); | |
329 | ||
330 | my $value = eval 'fagwoosh'; | |
331 | is ($@, ''); | |
332 | is ($value, 5); | |
333 | ||
334 | my @value = eval 'fagwoosh'; | |
335 | is ($@, ''); | |
336 | is_deeply (\@value, [5]); | |
337 | ||
338 | eval 'use constant putt => 6, 7; 1' or die $@; | |
339 | ||
340 | is ("@warnings", "", "No warnings if the typeglob exists already"); | |
341 | ||
342 | @value = eval 'putt'; | |
343 | is ($@, ''); | |
344 | is_deeply (\@value, [6, 7]); | |
345 | ||
346 | eval 'use constant "klong"; 1' or die $@; | |
347 | ||
348 | is ("@warnings", "", "No warnings if the typeglob exists already"); | |
349 | ||
350 | $value = eval 'klong'; | |
351 | is ($@, ''); | |
352 | is ($value, undef); | |
353 | ||
354 | @value = eval 'klong'; | |
355 | is ($@, ''); | |
356 | is_deeply (\@value, []); | |
357 | } |