Commit | Line | Data |
0d863452 |
1 | #!./perl |
2 | |
3 | BEGIN { |
4 | chdir 't' if -d 't'; |
5 | @INC = '../lib'; |
37e07c40 |
6 | require './test.pl'; |
0d863452 |
7 | } |
8 | |
9 | use strict; |
10 | use warnings; |
11 | |
37e07c40 |
12 | plan tests => 122; |
0d863452 |
13 | |
14 | # The behaviour of the feature pragma should be tested by lib/switch.t |
15 | # using the tests in t/lib/switch/*. This file tests the behaviour of |
16 | # the switch ops themselves. |
0d863452 |
17 | |
18 | use feature 'switch'; |
0d863452 |
19 | |
20 | eval { continue }; |
21 | like($@, qr/^Can't "continue" outside/, "continue outside"); |
22 | |
23 | eval { break }; |
24 | like($@, qr/^Can't "break" outside/, "break outside"); |
25 | |
26 | # Scoping rules |
27 | |
28 | { |
29 | my $x = "foo"; |
30 | given(my $x = "bar") { |
31 | is($x, "bar", "given scope starts"); |
32 | } |
33 | is($x, "foo", "given scope ends"); |
34 | } |
35 | |
36 | sub be_true {1} |
37 | |
38 | given(my $x = "foo") { |
39 | when(be_true(my $x = "bar")) { |
40 | is($x, "bar", "given scope starts"); |
41 | } |
42 | is($x, "foo", "given scope ends"); |
43 | } |
44 | |
45 | $_ = "outside"; |
46 | given("inside") { check_outside1() } |
47 | sub check_outside1 { is($_, "outside", "\$_ lexically scoped") } |
48 | |
49 | { |
50 | my $_ = "outside"; |
51 | given("inside") { check_outside2() } |
52 | sub check_outside2 { |
53 | is($_, "outside", "\$_ lexically scoped (lexical \$_)") |
54 | } |
55 | } |
56 | |
57 | # Basic string/numeric comparisons and control flow |
58 | |
59 | { |
cd9c531b |
60 | my $ok; |
0d863452 |
61 | given(3) { |
cd9c531b |
62 | when(2) { $ok = 'two'; } |
63 | when(3) { $ok = 'three'; } |
64 | when(4) { $ok = 'four'; } |
65 | default { $ok = 'd'; } |
0d863452 |
66 | } |
cd9c531b |
67 | is($ok, 'three', "numeric comparison"); |
0d863452 |
68 | } |
69 | |
70 | { |
cd9c531b |
71 | my $ok; |
0d863452 |
72 | use integer; |
73 | given(3.14159265) { |
cd9c531b |
74 | when(2) { $ok = 'two'; } |
75 | when(3) { $ok = 'three'; } |
76 | when(4) { $ok = 'four'; } |
77 | default { $ok = 'd'; } |
0d863452 |
78 | } |
cd9c531b |
79 | is($ok, 'three', "integer comparison"); |
0d863452 |
80 | } |
81 | |
82 | { |
cd9c531b |
83 | my ($ok1, $ok2); |
0d863452 |
84 | given(3) { |
cd9c531b |
85 | when(3.1) { $ok1 = 'n'; } |
86 | when(3.0) { $ok1 = 'y'; continue } |
87 | when("3.0") { $ok2 = 'y'; } |
88 | default { $ok2 = 'n'; } |
0d863452 |
89 | } |
cd9c531b |
90 | is($ok1, 'y', "more numeric (pt. 1)"); |
91 | is($ok2, 'y', "more numeric (pt. 2)"); |
0d863452 |
92 | } |
93 | |
94 | { |
cd9c531b |
95 | my $ok; |
0d863452 |
96 | given("c") { |
cd9c531b |
97 | when("b") { $ok = 'B'; } |
98 | when("c") { $ok = 'C'; } |
99 | when("d") { $ok = 'D'; } |
100 | default { $ok = 'def'; } |
0d863452 |
101 | } |
cd9c531b |
102 | is($ok, 'C', "string comparison"); |
0d863452 |
103 | } |
104 | |
105 | { |
cd9c531b |
106 | my $ok; |
0d863452 |
107 | given("c") { |
cd9c531b |
108 | when("b") { $ok = 'B'; } |
109 | when("c") { $ok = 'C'; continue } |
110 | when("c") { $ok = 'CC'; } |
111 | default { $ok = 'D'; } |
0d863452 |
112 | } |
cd9c531b |
113 | is($ok, 'CC', "simple continue"); |
0d863452 |
114 | } |
115 | |
116 | # Definedness |
117 | { |
118 | my $ok = 1; |
119 | given (0) { when(undef) {$ok = 0} } |
cd9c531b |
120 | is($ok, 1, "Given(0) when(undef)"); |
0d863452 |
121 | } |
122 | { |
123 | my $undef; |
124 | my $ok = 1; |
125 | given (0) { when($undef) {$ok = 0} } |
cd9c531b |
126 | is($ok, 1, 'Given(0) when($undef)'); |
0d863452 |
127 | } |
128 | { |
129 | my $undef; |
130 | my $ok = 0; |
131 | given (0) { when($undef++) {$ok = 1} } |
cd9c531b |
132 | is($ok, 1, "Given(0) when($undef++)"); |
0d863452 |
133 | } |
134 | { |
62ec5f58 |
135 | no warnings "uninitialized"; |
136 | my $ok = 0; |
137 | given (undef) { when(0) {$ok = 1} } |
cd9c531b |
138 | is($ok, 1, "Given(undef) when(0)"); |
0d863452 |
139 | } |
140 | { |
62ec5f58 |
141 | no warnings "uninitialized"; |
0d863452 |
142 | my $undef; |
62ec5f58 |
143 | my $ok = 0; |
144 | given ($undef) { when(0) {$ok = 1} } |
cd9c531b |
145 | is($ok, 1, 'Given($undef) when(0)'); |
0d863452 |
146 | } |
147 | ######## |
148 | { |
149 | my $ok = 1; |
150 | given ("") { when(undef) {$ok = 0} } |
cd9c531b |
151 | is($ok, 1, 'Given("") when(undef)'); |
0d863452 |
152 | } |
153 | { |
154 | my $undef; |
155 | my $ok = 1; |
156 | given ("") { when($undef) {$ok = 0} } |
cd9c531b |
157 | is($ok, 1, 'Given("") when($undef)'); |
0d863452 |
158 | } |
159 | { |
62ec5f58 |
160 | no warnings "uninitialized"; |
161 | my $ok = 0; |
162 | given (undef) { when("") {$ok = 1} } |
cd9c531b |
163 | is($ok, 1, 'Given(undef) when("")'); |
0d863452 |
164 | } |
165 | { |
62ec5f58 |
166 | no warnings "uninitialized"; |
0d863452 |
167 | my $undef; |
62ec5f58 |
168 | my $ok = 0; |
169 | given ($undef) { when("") {$ok = 1} } |
cd9c531b |
170 | is($ok, 1, 'Given($undef) when("")'); |
0d863452 |
171 | } |
172 | ######## |
173 | { |
174 | my $ok = 0; |
175 | given (undef) { when(undef) {$ok = 1} } |
cd9c531b |
176 | is($ok, 1, "Given(undef) when(undef)"); |
0d863452 |
177 | } |
178 | { |
179 | my $undef; |
180 | my $ok = 0; |
181 | given (undef) { when($undef) {$ok = 1} } |
cd9c531b |
182 | is($ok, 1, 'Given(undef) when($undef)'); |
0d863452 |
183 | } |
184 | { |
185 | my $undef; |
186 | my $ok = 0; |
187 | given ($undef) { when(undef) {$ok = 1} } |
cd9c531b |
188 | is($ok, 1, 'Given($undef) when(undef)'); |
0d863452 |
189 | } |
190 | { |
191 | my $undef; |
192 | my $ok = 0; |
193 | given ($undef) { when($undef) {$ok = 1} } |
cd9c531b |
194 | is($ok, 1, 'Given($undef) when($undef)'); |
0d863452 |
195 | } |
196 | |
197 | |
198 | # Regular expressions |
199 | { |
cd9c531b |
200 | my ($ok1, $ok2); |
0d863452 |
201 | given("Hello, world!") { |
202 | when(/lo/) |
cd9c531b |
203 | { $ok1 = 'y'; continue} |
0d863452 |
204 | when(/no/) |
cd9c531b |
205 | { $ok1 = 'n'; continue} |
0d863452 |
206 | when(/^(Hello,|Goodbye cruel) world[!.?]/) |
cd9c531b |
207 | { $ok2 = 'Y'; continue} |
0d863452 |
208 | when(/^(Hello cruel|Goodbye,) world[!.?]/) |
cd9c531b |
209 | { $ok2 = 'n'; continue} |
0d863452 |
210 | } |
cd9c531b |
211 | is($ok1, 'y', "regex 1"); |
212 | is($ok2, 'Y', "regex 2"); |
0d863452 |
213 | } |
214 | |
215 | # Comparisons |
216 | { |
217 | my $test = "explicit numeric comparison (<)"; |
218 | my $twenty_five = 25; |
cd9c531b |
219 | my $ok; |
0d863452 |
220 | given($twenty_five) { |
cd9c531b |
221 | when ($_ < 10) { $ok = "ten" } |
222 | when ($_ < 20) { $ok = "twenty" } |
223 | when ($_ < 30) { $ok = "thirty" } |
224 | when ($_ < 40) { $ok = "forty" } |
225 | default { $ok = "default" } |
0d863452 |
226 | } |
cd9c531b |
227 | is($ok, "thirty", $test); |
0d863452 |
228 | } |
229 | |
230 | { |
231 | use integer; |
232 | my $test = "explicit numeric comparison (integer <)"; |
233 | my $twenty_five = 25; |
cd9c531b |
234 | my $ok; |
0d863452 |
235 | given($twenty_five) { |
cd9c531b |
236 | when ($_ < 10) { $ok = "ten" } |
237 | when ($_ < 20) { $ok = "twenty" } |
238 | when ($_ < 30) { $ok = "thirty" } |
239 | when ($_ < 40) { $ok = "forty" } |
240 | default { $ok = "default" } |
0d863452 |
241 | } |
cd9c531b |
242 | is($ok, "thirty", $test); |
0d863452 |
243 | } |
244 | |
245 | { |
246 | my $test = "explicit numeric comparison (<=)"; |
247 | my $twenty_five = 25; |
cd9c531b |
248 | my $ok; |
0d863452 |
249 | given($twenty_five) { |
cd9c531b |
250 | when ($_ <= 10) { $ok = "ten" } |
251 | when ($_ <= 20) { $ok = "twenty" } |
252 | when ($_ <= 30) { $ok = "thirty" } |
253 | when ($_ <= 40) { $ok = "forty" } |
254 | default { $ok = "default" } |
0d863452 |
255 | } |
cd9c531b |
256 | is($ok, "thirty", $test); |
0d863452 |
257 | } |
258 | |
259 | { |
260 | use integer; |
261 | my $test = "explicit numeric comparison (integer <=)"; |
262 | my $twenty_five = 25; |
cd9c531b |
263 | my $ok; |
0d863452 |
264 | given($twenty_five) { |
cd9c531b |
265 | when ($_ <= 10) { $ok = "ten" } |
266 | when ($_ <= 20) { $ok = "twenty" } |
267 | when ($_ <= 30) { $ok = "thirty" } |
268 | when ($_ <= 40) { $ok = "forty" } |
269 | default { $ok = "default" } |
0d863452 |
270 | } |
cd9c531b |
271 | is($ok, "thirty", $test); |
0d863452 |
272 | } |
273 | |
274 | |
275 | { |
276 | my $test = "explicit numeric comparison (>)"; |
277 | my $twenty_five = 25; |
cd9c531b |
278 | my $ok; |
0d863452 |
279 | given($twenty_five) { |
cd9c531b |
280 | when ($_ > 40) { $ok = "forty" } |
281 | when ($_ > 30) { $ok = "thirty" } |
282 | when ($_ > 20) { $ok = "twenty" } |
283 | when ($_ > 10) { $ok = "ten" } |
284 | default { $ok = "default" } |
0d863452 |
285 | } |
cd9c531b |
286 | is($ok, "twenty", $test); |
0d863452 |
287 | } |
288 | |
289 | { |
290 | my $test = "explicit numeric comparison (>=)"; |
291 | my $twenty_five = 25; |
cd9c531b |
292 | my $ok; |
0d863452 |
293 | given($twenty_five) { |
cd9c531b |
294 | when ($_ >= 40) { $ok = "forty" } |
295 | when ($_ >= 30) { $ok = "thirty" } |
296 | when ($_ >= 20) { $ok = "twenty" } |
297 | when ($_ >= 10) { $ok = "ten" } |
298 | default { $ok = "default" } |
0d863452 |
299 | } |
cd9c531b |
300 | is($ok, "twenty", $test); |
0d863452 |
301 | } |
302 | |
303 | { |
304 | use integer; |
305 | my $test = "explicit numeric comparison (integer >)"; |
306 | my $twenty_five = 25; |
cd9c531b |
307 | my $ok; |
0d863452 |
308 | given($twenty_five) { |
cd9c531b |
309 | when ($_ > 40) { $ok = "forty" } |
310 | when ($_ > 30) { $ok = "thirty" } |
311 | when ($_ > 20) { $ok = "twenty" } |
312 | when ($_ > 10) { $ok = "ten" } |
313 | default { $ok = "default" } |
0d863452 |
314 | } |
cd9c531b |
315 | is($ok, "twenty", $test); |
0d863452 |
316 | } |
317 | |
318 | { |
319 | use integer; |
320 | my $test = "explicit numeric comparison (integer >=)"; |
321 | my $twenty_five = 25; |
cd9c531b |
322 | my $ok; |
0d863452 |
323 | given($twenty_five) { |
cd9c531b |
324 | when ($_ >= 40) { $ok = "forty" } |
325 | when ($_ >= 30) { $ok = "thirty" } |
326 | when ($_ >= 20) { $ok = "twenty" } |
327 | when ($_ >= 10) { $ok = "ten" } |
328 | default { $ok = "default" } |
0d863452 |
329 | } |
cd9c531b |
330 | is($ok, "twenty", $test); |
0d863452 |
331 | } |
332 | |
333 | |
334 | { |
335 | my $test = "explicit string comparison (lt)"; |
336 | my $twenty_five = "25"; |
cd9c531b |
337 | my $ok; |
0d863452 |
338 | given($twenty_five) { |
cd9c531b |
339 | when ($_ lt "10") { $ok = "ten" } |
340 | when ($_ lt "20") { $ok = "twenty" } |
341 | when ($_ lt "30") { $ok = "thirty" } |
342 | when ($_ lt "40") { $ok = "forty" } |
343 | default { $ok = "default" } |
0d863452 |
344 | } |
cd9c531b |
345 | is($ok, "thirty", $test); |
0d863452 |
346 | } |
347 | |
348 | { |
349 | my $test = "explicit string comparison (le)"; |
350 | my $twenty_five = "25"; |
cd9c531b |
351 | my $ok; |
0d863452 |
352 | given($twenty_five) { |
cd9c531b |
353 | when ($_ le "10") { $ok = "ten" } |
354 | when ($_ le "20") { $ok = "twenty" } |
355 | when ($_ le "30") { $ok = "thirty" } |
356 | when ($_ le "40") { $ok = "forty" } |
357 | default { $ok = "default" } |
0d863452 |
358 | } |
cd9c531b |
359 | is($ok, "thirty", $test); |
0d863452 |
360 | } |
361 | |
362 | { |
363 | my $test = "explicit string comparison (gt)"; |
364 | my $twenty_five = 25; |
cd9c531b |
365 | my $ok; |
0d863452 |
366 | given($twenty_five) { |
cd9c531b |
367 | when ($_ ge "40") { $ok = "forty" } |
368 | when ($_ ge "30") { $ok = "thirty" } |
369 | when ($_ ge "20") { $ok = "twenty" } |
370 | when ($_ ge "10") { $ok = "ten" } |
371 | default { $ok = "default" } |
0d863452 |
372 | } |
cd9c531b |
373 | is($ok, "twenty", $test); |
0d863452 |
374 | } |
375 | |
376 | { |
377 | my $test = "explicit string comparison (ge)"; |
378 | my $twenty_five = 25; |
cd9c531b |
379 | my $ok; |
0d863452 |
380 | given($twenty_five) { |
cd9c531b |
381 | when ($_ ge "40") { $ok = "forty" } |
382 | when ($_ ge "30") { $ok = "thirty" } |
383 | when ($_ ge "20") { $ok = "twenty" } |
384 | when ($_ ge "10") { $ok = "ten" } |
385 | default { $ok = "default" } |
0d863452 |
386 | } |
cd9c531b |
387 | is($ok, "twenty", $test); |
0d863452 |
388 | } |
389 | |
390 | # Make sure it still works with a lexical $_: |
391 | { |
392 | my $_; |
393 | my $test = "explicit comparison with lexical \$_"; |
394 | my $twenty_five = 25; |
cd9c531b |
395 | my $ok; |
0d863452 |
396 | given($twenty_five) { |
cd9c531b |
397 | when ($_ ge "40") { $ok = "forty" } |
398 | when ($_ ge "30") { $ok = "thirty" } |
399 | when ($_ ge "20") { $ok = "twenty" } |
400 | when ($_ ge "10") { $ok = "ten" } |
401 | default { $ok = "default" } |
0d863452 |
402 | } |
cd9c531b |
403 | is($ok, "twenty", $test); |
0d863452 |
404 | } |
405 | |
406 | # Optimized-away comparisons |
407 | { |
cd9c531b |
408 | my $ok; |
0d863452 |
409 | given(23) { |
cd9c531b |
410 | when (2 + 2 == 4) { $ok = 'y'; continue } |
411 | when (2 + 2 == 5) { $ok = 'n' } |
0d863452 |
412 | } |
cd9c531b |
413 | is($ok, 'y', "Optimized-away comparison"); |
0d863452 |
414 | } |
415 | |
416 | # File tests |
417 | # (How to be both thorough and portable? Pinch a few ideas |
418 | # from t/op/filetest.t. We err on the side of portability for |
419 | # the time being.) |
420 | |
421 | { |
422 | my ($ok_d, $ok_f, $ok_r); |
423 | given("op") { |
424 | when(-d) {$ok_d = 1; continue} |
425 | when(!-f) {$ok_f = 1; continue} |
426 | when(-r) {$ok_r = 1; continue} |
427 | } |
428 | ok($ok_d, "Filetest -d"); |
429 | ok($ok_f, "Filetest -f"); |
430 | ok($ok_r, "Filetest -r"); |
431 | } |
432 | |
433 | # Sub and method calls |
84c82fbf |
434 | sub notfoo {"bar"} |
0d863452 |
435 | { |
436 | my $ok = 0; |
437 | given("foo") { |
84c82fbf |
438 | when(notfoo()) {$ok = 1} |
0d863452 |
439 | } |
440 | ok($ok, "Sub call acts as boolean") |
441 | } |
442 | |
443 | { |
444 | my $ok = 0; |
445 | given("foo") { |
84c82fbf |
446 | when(main->notfoo()) {$ok = 1} |
0d863452 |
447 | } |
448 | ok($ok, "Class-method call acts as boolean") |
449 | } |
450 | |
451 | { |
452 | my $ok = 0; |
453 | my $obj = bless []; |
454 | given("foo") { |
84c82fbf |
455 | when($obj->notfoo()) {$ok = 1} |
0d863452 |
456 | } |
457 | ok($ok, "Object-method call acts as boolean") |
458 | } |
459 | |
460 | # Other things that should not be smart matched |
461 | { |
462 | my $ok = 0; |
1e1d4b91 |
463 | given(12) { |
464 | when( /(\d+)/ and ( 1 <= $1 and $1 <= 12 ) ) { |
465 | $ok = 1; |
466 | } |
467 | } |
468 | ok($ok, "bool not smartmatches"); |
469 | } |
470 | |
471 | { |
472 | my $ok = 0; |
0d863452 |
473 | given(0) { |
474 | when(eof(DATA)) { |
475 | $ok = 1; |
476 | } |
477 | } |
478 | ok($ok, "eof() not smartmatched"); |
479 | } |
480 | |
481 | { |
482 | my $ok = 0; |
483 | my %foo = ("bar", 0); |
484 | given(0) { |
485 | when(exists $foo{bar}) { |
486 | $ok = 1; |
487 | } |
488 | } |
489 | ok($ok, "exists() not smartmatched"); |
490 | } |
491 | |
492 | { |
493 | my $ok = 0; |
494 | given(0) { |
495 | when(defined $ok) { |
496 | $ok = 1; |
497 | } |
498 | } |
499 | ok($ok, "defined() not smartmatched"); |
500 | } |
501 | |
502 | { |
503 | my $ok = 1; |
504 | given("foo") { |
505 | when((1 == 1) && "bar") { |
506 | $ok = 0; |
507 | } |
508 | when((1 == 1) && $_ eq "foo") { |
509 | $ok = 2; |
510 | } |
511 | } |
512 | is($ok, 2, "((1 == 1) && \"bar\") not smartmatched"); |
513 | } |
514 | |
515 | { |
6e03d743 |
516 | my $n = 0; |
517 | for my $l qw(a b c d) { |
518 | given ($l) { |
f118ea0d |
519 | when ($_ eq "b" .. $_ eq "c") { $n = 1 } |
520 | default { $n = 0 } |
521 | } |
522 | ok(($n xor $l =~ /[ad]/), 'when(E1..E2) evaluates in boolean context'); |
523 | } |
524 | } |
525 | |
526 | { |
527 | my $n = 0; |
528 | for my $l qw(a b c d) { |
529 | given ($l) { |
6e03d743 |
530 | when ($_ eq "b" ... $_ eq "c") { $n = 1 } |
531 | default { $n = 0 } |
532 | } |
533 | ok(($n xor $l =~ /[ad]/), 'when(E1...E2) evaluates in boolean context'); |
534 | } |
535 | } |
536 | |
537 | { |
1e1d4b91 |
538 | my $ok = 0; |
539 | given("foo") { |
0d863452 |
540 | when((1 == $ok) || "foo") { |
1e1d4b91 |
541 | $ok = 1; |
0d863452 |
542 | } |
543 | } |
1e1d4b91 |
544 | ok($ok, '((1 == $ok) || "foo") smartmatched'); |
0d863452 |
545 | } |
546 | |
f92e1a16 |
547 | { |
548 | my $ok = 0; |
549 | given("foo") { |
550 | when((1 == $ok || undef) // "foo") { |
551 | $ok = 1; |
552 | } |
553 | } |
554 | ok($ok, '((1 == $ok || undef) // "foo") smartmatched'); |
555 | } |
556 | |
0d863452 |
557 | # Make sure we aren't invoking the get-magic more than once |
558 | |
559 | { # A helper class to count the number of accesses. |
560 | package FetchCounter; |
561 | sub TIESCALAR { |
562 | my ($class) = @_; |
563 | bless {value => undef, count => 0}, $class; |
564 | } |
565 | sub STORE { |
566 | my ($self, $val) = @_; |
567 | $self->{count} = 0; |
568 | $self->{value} = $val; |
569 | } |
570 | sub FETCH { |
571 | my ($self) = @_; |
572 | # Avoid pre/post increment here |
573 | $self->{count} = 1 + $self->{count}; |
574 | $self->{value}; |
575 | } |
576 | sub count { |
577 | my ($self) = @_; |
578 | $self->{count}; |
579 | } |
580 | } |
581 | |
582 | my $f = tie my $v, "FetchCounter"; |
583 | |
584 | { my $test_name = "Only one FETCH (in given)"; |
cd9c531b |
585 | my $ok; |
0d863452 |
586 | given($v = 23) { |
587 | when(undef) {} |
588 | when(sub{0}->()) {} |
589 | when(21) {} |
590 | when("22") {} |
591 | when(23) {$ok = 1} |
592 | when(/24/) {$ok = 0} |
593 | } |
cd9c531b |
594 | is($ok, 1, "precheck: $test_name"); |
0d863452 |
595 | is($f->count(), 1, $test_name); |
596 | } |
597 | |
598 | { my $test_name = "Only one FETCH (numeric when)"; |
cd9c531b |
599 | my $ok; |
0d863452 |
600 | $v = 23; |
601 | is($f->count(), 0, "Sanity check: $test_name"); |
602 | given(23) { |
603 | when(undef) {} |
604 | when(sub{0}->()) {} |
605 | when(21) {} |
606 | when("22") {} |
607 | when($v) {$ok = 1} |
608 | when(/24/) {$ok = 0} |
609 | } |
cd9c531b |
610 | is($ok, 1, "precheck: $test_name"); |
0d863452 |
611 | is($f->count(), 1, $test_name); |
612 | } |
613 | |
614 | { my $test_name = "Only one FETCH (string when)"; |
cd9c531b |
615 | my $ok; |
0d863452 |
616 | $v = "23"; |
617 | is($f->count(), 0, "Sanity check: $test_name"); |
618 | given("23") { |
619 | when(undef) {} |
620 | when(sub{0}->()) {} |
621 | when("21") {} |
622 | when("22") {} |
623 | when($v) {$ok = 1} |
624 | when(/24/) {$ok = 0} |
625 | } |
cd9c531b |
626 | is($ok, 1, "precheck: $test_name"); |
0d863452 |
627 | is($f->count(), 1, $test_name); |
628 | } |
629 | |
630 | { my $test_name = "Only one FETCH (undef)"; |
cd9c531b |
631 | my $ok; |
0d863452 |
632 | $v = undef; |
633 | is($f->count(), 0, "Sanity check: $test_name"); |
62ec5f58 |
634 | no warnings "uninitialized"; |
0d863452 |
635 | given(my $undef) { |
636 | when(sub{0}->()) {} |
637 | when("21") {} |
638 | when("22") {} |
639 | when($v) {$ok = 1} |
640 | when(undef) {$ok = 0} |
641 | } |
cd9c531b |
642 | is($ok, 1, "precheck: $test_name"); |
0d863452 |
643 | is($f->count(), 1, $test_name); |
644 | } |
645 | |
646 | # Loop topicalizer |
647 | { |
648 | my $first = 1; |
649 | for (1, "two") { |
650 | when ("two") { |
651 | is($first, 0, "Loop: second"); |
652 | eval {break}; |
653 | like($@, qr/^Can't "break" in a loop topicalizer/, |
654 | q{Can't "break" in a loop topicalizer}); |
655 | } |
656 | when (1) { |
657 | is($first, 1, "Loop: first"); |
658 | $first = 0; |
659 | # Implicit break is okay |
660 | } |
661 | } |
662 | } |
663 | |
664 | { |
665 | my $first = 1; |
666 | for $_ (1, "two") { |
667 | when ("two") { |
668 | is($first, 0, "Explicit \$_: second"); |
669 | eval {break}; |
670 | like($@, qr/^Can't "break" in a loop topicalizer/, |
671 | q{Can't "break" in a loop topicalizer}); |
672 | } |
673 | when (1) { |
674 | is($first, 1, "Explicit \$_: first"); |
675 | $first = 0; |
676 | # Implicit break is okay |
677 | } |
678 | } |
679 | } |
680 | |
681 | { |
682 | my $first = 1; |
683 | my $_; |
684 | for (1, "two") { |
685 | when ("two") { |
686 | is($first, 0, "Implicitly lexical loop: second"); |
687 | eval {break}; |
688 | like($@, qr/^Can't "break" in a loop topicalizer/, |
689 | q{Can't "break" in a loop topicalizer}); |
690 | } |
691 | when (1) { |
692 | is($first, 1, "Implicitly lexical loop: first"); |
693 | $first = 0; |
694 | # Implicit break is okay |
695 | } |
696 | } |
697 | } |
698 | |
699 | { |
700 | my $first = 1; |
701 | my $_; |
702 | for $_ (1, "two") { |
703 | when ("two") { |
704 | is($first, 0, "Implicitly lexical, explicit \$_: second"); |
705 | eval {break}; |
706 | like($@, qr/^Can't "break" in a loop topicalizer/, |
707 | q{Can't "break" in a loop topicalizer}); |
708 | } |
709 | when (1) { |
710 | is($first, 1, "Implicitly lexical, explicit \$_: first"); |
711 | $first = 0; |
712 | # Implicit break is okay |
713 | } |
714 | } |
715 | } |
716 | |
717 | { |
718 | my $first = 1; |
719 | for my $_ (1, "two") { |
720 | when ("two") { |
721 | is($first, 0, "Lexical loop: second"); |
722 | eval {break}; |
723 | like($@, qr/^Can't "break" in a loop topicalizer/, |
724 | q{Can't "break" in a loop topicalizer}); |
725 | } |
726 | when (1) { |
1dcb720a |
727 | is($first, 1, "Lexical loop: first"); |
0d863452 |
728 | $first = 0; |
729 | # Implicit break is okay |
730 | } |
731 | } |
732 | } |
733 | |
734 | |
735 | # Code references |
736 | { |
0d863452 |
737 | my $called_foo = 0; |
84c82fbf |
738 | sub foo {$called_foo = 1; "@_" eq "foo"} |
0d863452 |
739 | my $called_bar = 0; |
84c82fbf |
740 | sub bar {$called_bar = 1; "@_" eq "bar"} |
0d863452 |
741 | my ($matched_foo, $matched_bar) = (0, 0); |
84c82fbf |
742 | given("foo") { |
0d863452 |
743 | when(\&bar) {$matched_bar = 1} |
744 | when(\&foo) {$matched_foo = 1} |
745 | } |
84c82fbf |
746 | is($called_foo, 1, "foo() was called"); |
747 | is($called_bar, 1, "bar() was called"); |
748 | is($matched_bar, 0, "bar didn't match"); |
749 | is($matched_foo, 1, "foo did match"); |
0d863452 |
750 | } |
751 | |
752 | sub contains_x { |
753 | my $x = shift; |
754 | return ($x =~ /x/); |
755 | } |
756 | { |
757 | my ($ok1, $ok2) = (0,0); |
758 | given("foxy!") { |
759 | when(contains_x($_)) |
760 | { $ok1 = 1; continue } |
761 | when(\&contains_x) |
762 | { $ok2 = 1; continue } |
763 | } |
764 | is($ok1, 1, "Calling sub directly (true)"); |
765 | is($ok2, 1, "Calling sub indirectly (true)"); |
766 | |
767 | given("foggy") { |
768 | when(contains_x($_)) |
769 | { $ok1 = 2; continue } |
770 | when(\&contains_x) |
771 | { $ok2 = 2; continue } |
772 | } |
773 | is($ok1, 1, "Calling sub directly (false)"); |
774 | is($ok2, 1, "Calling sub indirectly (false)"); |
775 | } |
776 | |
02eafbe2 |
777 | SKIP: { |
778 | skip "Scalar/Util.pm not yet available", 20 |
779 | unless -r "$INC[0]/Scalar/Util.pm"; |
780 | # Test overloading |
781 | { package OverloadTest; |
782 | |
783 | use overload '""' => sub{"string value of obj"}; |
6d743019 |
784 | use overload 'eq' => sub{"$_[0]" eq "$_[1]"}; |
02eafbe2 |
785 | |
786 | use overload "~~" => sub { |
787 | my ($self, $other, $reversed) = @_; |
788 | if ($reversed) { |
789 | $self->{left} = $other; |
790 | $self->{right} = $self; |
791 | $self->{reversed} = 1; |
792 | } else { |
793 | $self->{left} = $self; |
794 | $self->{right} = $other; |
795 | $self->{reversed} = 0; |
796 | } |
797 | $self->{called} = 1; |
798 | return $self->{retval}; |
799 | }; |
0d863452 |
800 | |
02eafbe2 |
801 | sub new { |
802 | my ($pkg, $retval) = @_; |
803 | bless { |
804 | called => 0, |
805 | retval => $retval, |
806 | }, $pkg; |
807 | } |
808 | } |
809 | |
810 | { |
811 | my $test = "Overloaded obj in given (true)"; |
812 | my $obj = OverloadTest->new(1); |
813 | my $matched; |
814 | given($obj) { |
815 | when ("other arg") {$matched = 1} |
816 | default {$matched = 0} |
817 | } |
0d863452 |
818 | |
2cb9bde7 |
819 | is($obj->{called}, 1, "$test: called"); |
820 | ok($matched, "$test: matched"); |
02eafbe2 |
821 | } |
822 | |
823 | { |
824 | my $test = "Overloaded obj in given (false)"; |
825 | my $obj = OverloadTest->new(0); |
826 | my $matched; |
827 | given($obj) { |
828 | when ("other arg") {$matched = 1} |
829 | } |
0d863452 |
830 | |
2cb9bde7 |
831 | is($obj->{called}, 1, "$test: called"); |
02eafbe2 |
832 | ok(!$matched, "$test: not matched"); |
02eafbe2 |
833 | } |
834 | |
835 | { |
836 | my $test = "Overloaded obj in when (true)"; |
837 | my $obj = OverloadTest->new(1); |
838 | my $matched; |
839 | given("topic") { |
840 | when ($obj) {$matched = 1} |
841 | default {$matched = 0} |
842 | } |
0d863452 |
843 | |
02eafbe2 |
844 | is($obj->{called}, 1, "$test: called"); |
845 | ok($matched, "$test: matched"); |
846 | is($obj->{left}, "topic", "$test: left"); |
847 | is($obj->{right}, "string value of obj", "$test: right"); |
848 | ok($obj->{reversed}, "$test: reversed"); |
849 | } |
850 | |
851 | { |
852 | my $test = "Overloaded obj in when (false)"; |
853 | my $obj = OverloadTest->new(0); |
854 | my $matched; |
855 | given("topic") { |
856 | when ($obj) {$matched = 1} |
857 | default {$matched = 0} |
858 | } |
0d863452 |
859 | |
02eafbe2 |
860 | is($obj->{called}, 1, "$test: called"); |
861 | ok(!$matched, "$test: not matched"); |
862 | is($obj->{left}, "topic", "$test: left"); |
863 | is($obj->{right}, "string value of obj", "$test: right"); |
864 | ok($obj->{reversed}, "$test: reversed"); |
865 | } |
0d863452 |
866 | } |
f20dcd76 |
867 | |
868 | # Postfix when |
869 | { |
870 | my $ok; |
871 | given (undef) { |
872 | $ok = 1 when undef; |
873 | } |
874 | is($ok, 1, "postfix undef"); |
875 | } |
876 | { |
877 | my $ok; |
878 | given (2) { |
879 | $ok += 1 when 7; |
880 | $ok += 2 when 9.1685; |
881 | $ok += 4 when $_ > 4; |
882 | $ok += 8 when $_ < 2.5; |
883 | } |
884 | is($ok, 8, "postfix numeric"); |
885 | } |
886 | { |
887 | my $ok; |
888 | given ("apple") { |
889 | $ok = 1, continue when $_ eq "apple"; |
890 | $ok += 2; |
891 | $ok = 0 when "banana"; |
892 | } |
893 | is($ok, 3, "postfix string"); |
894 | } |
895 | { |
896 | my $ok; |
897 | given ("pear") { |
898 | do { $ok = 1; continue } when /pea/; |
899 | $ok += 2; |
900 | $ok = 0 when /pie/; |
901 | default { $ok += 4 } |
902 | $ok = 0; |
903 | } |
904 | is($ok, 7, "postfix regex"); |
905 | } |
906 | # be_true is defined at the beginning of the file |
907 | { |
908 | my $x = "what"; |
909 | given(my $x = "foo") { |
910 | do { |
911 | is($x, "foo", "scope inside ... when my \$x = ..."); |
912 | continue; |
913 | } when be_true(my $x = "bar"); |
914 | is($x, "bar", "scope after ... when my \$x = ..."); |
915 | } |
916 | } |
917 | { |
918 | my $x = 0; |
919 | given(my $x = 1) { |
920 | my $x = 2, continue when be_true(); |
921 | is($x, undef, "scope after my \$x = ... when ..."); |
922 | } |
923 | } |
924 | |
1ebfab32 |
925 | # Tests for last and next in when clauses |
926 | my $letter; |
927 | |
928 | $letter = ''; |
929 | for ("a".."e") { |
930 | given ($_) { |
931 | $letter = $_; |
932 | when ("b") { last } |
933 | } |
934 | $letter = "z"; |
935 | } |
936 | is($letter, "b", "last in when"); |
937 | |
938 | $letter = ''; |
939 | LETTER1: for ("a".."e") { |
940 | given ($_) { |
941 | $letter = $_; |
942 | when ("b") { last LETTER1 } |
943 | } |
944 | $letter = "z"; |
945 | } |
946 | is($letter, "b", "last LABEL in when"); |
947 | |
948 | $letter = ''; |
949 | for ("a".."e") { |
950 | given ($_) { |
951 | when (/b|d/) { next } |
952 | $letter .= $_; |
953 | } |
954 | $letter .= ','; |
955 | } |
956 | is($letter, "a,c,e,", "next in when"); |
957 | |
958 | $letter = ''; |
959 | LETTER2: for ("a".."e") { |
960 | given ($_) { |
961 | when (/b|d/) { next LETTER2 } |
962 | $letter .= $_; |
963 | } |
964 | $letter .= ','; |
965 | } |
966 | is($letter, "a,c,e,", "next LABEL in when"); |
f20dcd76 |
967 | |
0d863452 |
968 | # Okay, that'll do for now. The intricacies of the smartmatch |
969 | # semantics are tested in t/op/smartmatch.t |
970 | __END__ |