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Get rid of ‘Not a format reference’
[perl5.git] / t / op / write.t
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1#!./perl
2
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3BEGIN {
4 chdir 't' if -d 't';
5 @INC = '../lib';
6108250c 6 require './test.pl';
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7}
8
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9use strict; # Amazed that this hackery can be made strict ...
10
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11# read in a file
12sub cat {
13 my $file = shift;
14 local $/;
15 open my $fh, $file or die "can't open '$file': $!";
16 my $data = <$fh>;
17 close $fh;
18 $data;
19}
20
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21#-- testing numeric fields in all variants (WL)
22
23sub swrite {
24 my $format = shift;
25 local $^A = ""; # don't litter, use a local bin
26 formline( $format, @_ );
27 return $^A;
28}
29
30my @NumTests = (
d1f6232e 31 # [ format, value1, expected1, value2, expected2, .... ]
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32 [ '@###', 0, ' 0', 1, ' 1', 9999.6, '####',
33 9999.4999, '9999', -999.6, '####', 1e+100, '####' ],
d1f6232e 34
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35 [ '@0##', 0, '0000', 1, '0001', 9999.6, '####',
36 -999.4999, '-999', -999.6, '####', 1e+100, '####' ],
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37
38 [ '^###', 0, ' 0', undef, ' ' ],
39
40 [ '^0##', 0, '0000', undef, ' ' ],
41
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42 [ '@###.', 0, ' 0.', 1, ' 1.', 9999.6, '#####',
43 9999.4999, '9999.', -999.6, '#####' ],
d1f6232e 44
9acd3e2c 45 [ '@##.##', 0, ' 0.00', 1, ' 1.00', 999.996, '######',
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46 999.99499, '999.99', -100, '######' ],
47
48 [ '@0#.##', 0, '000.00', 1, '001.00', 10, '010.00',
8975a8c2 49 -0.0001, qr/^[\-0]00\.00$/ ],
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50
51);
52
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53
54my $num_tests = 0;
55for my $tref ( @NumTests ){
d1f6232e 56 $num_tests += (@$tref - 1)/2;
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57}
58#---------------------------------------------------------
59
60# number of tests in section 1
61my $bas_tests = 20;
62
63# number of tests in section 3
64eff8b7 64my $bug_tests = 4 + 3 * 3 * 5 * 2 * 3 + 2 + 66 + 4 + 2 + 3;
a1b95068 65
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66# number of tests in section 4
67my $hmb_tests = 35;
68
69my $tests = $bas_tests + $num_tests + $bug_tests + $hmb_tests;
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70
71plan $tests;
a687059c 72
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73############
74## Section 1
75############
76
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77use vars qw($fox $multiline $foo $good);
78
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79format OUT =
80the quick brown @<<
81$fox
82jumped
83@*
84$multiline
85^<<<<<<<<<
86$foo
87^<<<<<<<<<
88$foo
89^<<<<<<...
90$foo
91now @<<the@>>>> for all@|||||men to come @<<<<
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92{
93 'i' . 's', "time\n", $good, 'to'
94}
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95.
96
a0d0e21e 97open(OUT, '>Op_write.tmp') || die "Can't create Op_write.tmp";
951af6b5 98END { unlink_all 'Op_write.tmp' }
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99
100$fox = 'foxiness';
101$good = 'good';
102$multiline = "forescore\nand\nseven years\n";
103$foo = 'when in the course of human events it becomes necessary';
104write(OUT);
d1e4d418 105close OUT or die "Could not close: $!";
a687059c 106
90f67b00 107my $right =
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108"the quick brown fox
109jumped
110forescore
111and
112seven years
113when in
114the course
115of huma...
116now is the time for all good men to come to\n";
117
951af6b5 118is cat('Op_write.tmp'), $right and unlink_all 'Op_write.tmp';
a687059c 119
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120$fox = 'wolfishness';
121my $fox = 'foxiness'; # Test a lexical variable.
122
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123format OUT2 =
124the quick brown @<<
125$fox
126jumped
127@*
128$multiline
129^<<<<<<<<< ~~
130$foo
131now @<<the@>>>> for all@|||||men to come @<<<<
132'i' . 's', "time\n", $good, 'to'
133.
134
a0d0e21e 135open OUT2, '>Op_write.tmp' or die "Can't create Op_write.tmp";
a687059c 136
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137$good = 'good';
138$multiline = "forescore\nand\nseven years\n";
139$foo = 'when in the course of human events it becomes necessary';
140write(OUT2);
d1e4d418 141close OUT2 or die "Could not close: $!";
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142
143$right =
144"the quick brown fox
145jumped
146forescore
147and
148seven years
149when in
150the course
151of human
152events it
153becomes
154necessary
155now is the time for all good men to come to\n";
156
951af6b5 157is cat('Op_write.tmp'), $right and unlink_all 'Op_write.tmp';
a687059c 158
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159eval <<'EOFORMAT';
160format OUT2 =
161the brown quick @<<
162$fox
163jumped
164@*
165$multiline
a0d0e21e 166and
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167^<<<<<<<<< ~~
168$foo
169now @<<the@>>>> for all@|||||men to come @<<<<
170'i' . 's', "time\n", $good, 'to'
171.
172EOFORMAT
173
a0d0e21e 174open(OUT2, '>Op_write.tmp') || die "Can't create Op_write.tmp";
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175
176$fox = 'foxiness';
177$good = 'good';
178$multiline = "forescore\nand\nseven years\n";
179$foo = 'when in the course of human events it becomes necessary';
180write(OUT2);
d1e4d418 181close OUT2 or die "Could not close: $!";
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182
183$right =
184"the brown quick fox
185jumped
186forescore
187and
188seven years
a0d0e21e 189and
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190when in
191the course
192of human
193events it
194becomes
195necessary
196now is the time for all good men to come to\n";
197
951af6b5 198is cat('Op_write.tmp'), $right and unlink_all 'Op_write.tmp';
0f85fab0 199
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200# formline tests
201
90f67b00 202$right = <<EOT;
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203@ a
204@> ab
205@>> abc
206@>>> abc
207@>>>> abc
208@>>>>> abc
209@>>>>>> abc
210@>>>>>>> abc
211@>>>>>>>> abc
212@>>>>>>>>> abc
213@>>>>>>>>>> abc
214EOT
215
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216my $was1 = my $was2 = '';
217use vars '$format2';
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218for (0..10) {
219 # lexical picture
220 $^A = '';
221 my $format1 = '@' . '>' x $_;
222 formline $format1, 'abc';
223 $was1 .= "$format1 $^A\n";
224 # global
225 $^A = '';
226 local $format2 = '@' . '>' x $_;
227 formline $format2, 'abc';
228 $was2 .= "$format2 $^A\n";
229}
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230is $was1, $right;
231is $was2, $right;
55497cff 232
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233$^A = '';
234
235# more test
236
237format OUT3 =
238^<<<<<<...
239$foo
240.
241
242open(OUT3, '>Op_write.tmp') || die "Can't create Op_write.tmp";
243
244$foo = 'fit ';
245write(OUT3);
d1e4d418 246close OUT3 or die "Could not close: $!";
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247
248$right =
249"fit\n";
250
951af6b5 251is cat('Op_write.tmp'), $right and unlink_all 'Op_write.tmp';
2027357e 252
7056ecde 253
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254# test lexicals and globals
255{
2027357e 256 my $test = curr_test();
445b3f51 257 my $this = "ok";
2027357e 258 our $that = $test;
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259 format LEX =
260@<<@|
261$this,$that
262.
263 open(LEX, ">&STDOUT") or die;
264 write LEX;
2027357e 265 $that = ++$test;
445b3f51 266 write LEX;
d1e4d418 267 close LEX or die "Could not close: $!";
2027357e 268 curr_test($test + 1);
445b3f51 269}
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270# LEX_INTERPNORMAL test
271my %e = ( a => 1 );
272format OUT4 =
273@<<<<<<
274"$e{a}"
275.
276open OUT4, ">Op_write.tmp" or die "Can't create Op_write.tmp";
277write (OUT4);
d1e4d418 278close OUT4 or die "Could not close: $!";
951af6b5 279is cat('Op_write.tmp'), "1\n" and unlink_all "Op_write.tmp";
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280
281eval <<'EOFORMAT';
282format OUT10 =
283@####.## @0###.##
284$test1, $test1
285.
286EOFORMAT
287
288open(OUT10, '>Op_write.tmp') || die "Can't create Op_write.tmp";
289
90f67b00 290use vars '$test1';
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291$test1 = 12.95;
292write(OUT10);
d1e4d418 293close OUT10 or die "Could not close: $!";
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294
295$right = " 12.95 00012.95\n";
951af6b5 296is cat('Op_write.tmp'), $right and unlink_all 'Op_write.tmp';
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297
298eval <<'EOFORMAT';
299format OUT11 =
300@0###.##
301$test1
302@ 0#
303$test1
304@0 #
305$test1
306.
307EOFORMAT
308
309open(OUT11, '>Op_write.tmp') || die "Can't create Op_write.tmp";
310
311$test1 = 12.95;
312write(OUT11);
d1e4d418 313close OUT11 or die "Could not close: $!";
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314
315$right =
316"00012.95
3171 0#
31810 #\n";
951af6b5 319is cat('Op_write.tmp'), $right and unlink_all 'Op_write.tmp';
9ccde9ea 320
31869a79 321{
2027357e 322 my $test = curr_test();
71f882da 323 my $el;
a1b95068 324 format OUT12 =
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325ok ^<<<<<<<<<<<<<<~~ # sv_chop() naze
326$el
327.
2027357e 328 my %hash = ($test => 3);
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329 open(OUT12, '>Op_write.tmp') || die "Can't create Op_write.tmp";
330
31869a79 331 for $el (keys %hash) {
a1b95068 332 write(OUT12);
31869a79 333 }
a1b95068 334 close OUT12 or die "Could not close: $!";
a344b90b 335 print cat('Op_write.tmp');
2027357e 336 curr_test($test + 1);
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337}
338
ea42cebc 339{
2027357e 340 my $test = curr_test();
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341 # Bug report and testcase by Alexey Tourbin
342 use Tie::Scalar;
343 my $v;
344 tie $v, 'Tie::StdScalar';
2027357e 345 $v = $test;
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346 format OUT13 =
347ok ^<<<<<<<<< ~~
348$v
349.
350 open(OUT13, '>Op_write.tmp') || die "Can't create Op_write.tmp";
351 write(OUT13);
352 close OUT13 or die "Could not close: $!";
a344b90b 353 print cat('Op_write.tmp');
2027357e 354 curr_test($test + 1);
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355}
356
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357{ # test 14
358 # Bug #24774 format without trailing \n failed assertion, but this
359 # must fail since we have a trailing ; in the eval'ed string (WL)
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360 my @v = ('k');
361 eval "format OUT14 = \n@\n\@v";
2027357e 362 like $@, qr/Format not terminated/;
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363}
364
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365{ # test 15
366 # text lost in ^<<< field with \r in value (WL)
367 my $txt = "line 1\rline 2";
368 format OUT15 =
369^<<<<<<<<<<<<<<<<<<
370$txt
371^<<<<<<<<<<<<<<<<<<
372$txt
373.
374 open(OUT15, '>Op_write.tmp') || die "Can't create Op_write.tmp";
375 write(OUT15);
376 close OUT15 or die "Could not close: $!";
a344b90b 377 my $res = cat('Op_write.tmp');
2027357e 378 is $res, "line 1\nline 2\n";
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379}
380
381{ # test 16: multiple use of a variable in same line with ^<
382 my $txt = "this_is_block_1 this_is_block_2 this_is_block_3 this_is_block_4";
383 format OUT16 =
384^<<<<<<<<<<<<<<<< ^<<<<<<<<<<<<<<<<
385$txt, $txt
386^<<<<<<<<<<<<<<<< ^<<<<<<<<<<<<<<<<
387$txt, $txt
388.
389 open(OUT16, '>Op_write.tmp') || die "Can't create Op_write.tmp";
390 write(OUT16);
391 close OUT16 or die "Could not close: $!";
a344b90b 392 my $res = cat('Op_write.tmp');
2027357e 393 is $res, <<EOD;
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394this_is_block_1 this_is_block_2
395this_is_block_3 this_is_block_4
396EOD
397}
398
399{ # test 17: @* "should be on a line of its own", but it should work
400 # cleanly with literals before and after. (WL)
401
402 my $txt = "This is line 1.\nThis is the second line.\nThird and last.\n";
403 format OUT17 =
404Here we go: @* That's all, folks!
405 $txt
406.
407 open(OUT17, '>Op_write.tmp') || die "Can't create Op_write.tmp";
408 write(OUT17);
409 close OUT17 or die "Could not close: $!";
a344b90b 410 my $res = cat('Op_write.tmp');
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411 chomp( $txt );
412 my $exp = <<EOD;
413Here we go: $txt That's all, folks!
414EOD
2027357e 415 is $res, $exp;
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416}
417
418{ # test 18: @# and ~~ would cause runaway format, but we now
419 # catch this while compiling (WL)
420
421 format OUT18 =
422@######## ~~
42310
424.
425 open(OUT18, '>Op_write.tmp') || die "Can't create Op_write.tmp";
426 eval { write(OUT18); };
2027357e 427 like $@, qr/Repeated format line will never terminate/;
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428 close OUT18 or die "Could not close: $!";
429}
430
431{ # test 19: \0 in an evel'ed format, doesn't cause empty lines (WL)
432 my $v = 'gaga';
433 eval "format OUT19 = \n" .
434 '@<<<' . "\0\n" .
435 '$v' . "\n" .
436 '@<<<' . "\0\n" .
437 '$v' . "\n.\n";
438 open(OUT19, '>Op_write.tmp') || die "Can't create Op_write.tmp";
439 write(OUT19);
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440 close OUT19 or die "Could not close: $!";
441 my $res = cat('Op_write.tmp');
2027357e 442 is $res, <<EOD;
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443gaga\0
444gaga\0
445EOD
446}
447
448{ # test 20: hash accesses; single '}' must not terminate format '}' (WL)
449 my %h = ( xkey => 'xval', ykey => 'yval' );
450 format OUT20 =
451@>>>> @<<<< ~~
452each %h
453@>>>> @<<<<
454$h{xkey}, $h{ykey}
455@>>>> @<<<<
456{ $h{xkey}, $h{ykey}
457}
458}
459.
460 my $exp = '';
461 while( my( $k, $v ) = each( %h ) ){
462 $exp .= sprintf( "%5s %s\n", $k, $v );
463 }
464 $exp .= sprintf( "%5s %s\n", $h{xkey}, $h{ykey} );
465 $exp .= sprintf( "%5s %s\n", $h{xkey}, $h{ykey} );
466 $exp .= "}\n";
467 open(OUT20, '>Op_write.tmp') || die "Can't create Op_write.tmp";
468 write(OUT20);
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469 close OUT20 or die "Could not close: $!";
470 my $res = cat('Op_write.tmp');
2027357e 471 is $res, $exp;
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472}
473
474
475#####################
476## Section 2
477## numeric formatting
478#####################
479
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480curr_test($bas_tests + 1);
481
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482for my $tref ( @NumTests ){
483 my $writefmt = shift( @$tref );
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484 while (@$tref) {
485 my $val = shift @$tref;
486 my $expected = shift @$tref;
a1b95068 487 my $writeres = swrite( $writefmt, $val );
2027357e
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488 if (ref $expected) {
489 like $writeres, $expected, $writefmt;
490 } else {
491 is $writeres, $expected, $writefmt;
492 }
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493 }
494}
495
496
497#####################################
498## Section 3
f5b75c1c 499## Easiest to add new tests just here
2027357e 500#####################################
9ccde9ea 501
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502# DAPM. Exercise a couple of error codepaths
503
504{
505 local $~ = '';
506 eval { write };
2d1ebc9b 507 like $@, qr/Undefined format ""/, 'format with 0-length name';
30a1e583
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508
509 $~ = "NOSUCHFORMAT";
510 eval { write };
6108250c 511 like $@, qr/Undefined format/, 'no such format';
30a1e583
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512}
513
f3f2f1a3 514{
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515 package Count;
516
517 sub TIESCALAR {
518 my $class = shift;
519 bless [shift, 0, 0], $class;
520 }
521
522 sub FETCH {
523 my $self = shift;
524 ++$self->[1];
525 $self->[0];
526 }
527
528 sub STORE {
529 my $self = shift;
530 ++$self->[2];
531 $self->[0] = shift;
532 }
533}
534
535{
536 my ($pound_utf8, $pm_utf8) = map { my $a = "$_\x{100}"; chop $a; $a}
f3f2f1a3
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537 my ($pound, $pm) = ("\xA3", "\xB1");
538
539 foreach my $first ('N', $pound, $pound_utf8) {
540 foreach my $base ('N', $pm, $pm_utf8) {
003d2c64
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541 foreach my $second ($base, "$base\n", "$base\nMoo!", "$base\nMoo!\n",
542 "$base\nMoo!\n",) {
543 foreach (['^*', qr/(.+)/], ['@*', qr/(.*?)$/s]) {
544 my ($format, $re) = @$_;
b57b1734 545 $format = "1^*2 3${format}4";
e8e72d41 546 foreach my $class ('', 'Count') {
b57b1734 547 my $name = qq{swrite("$format", "$first", "$second") class="$class"};
e8e72d41 548 $name =~ s/\n/\\n/g;
b57b1734
DM
549 $name =~ s{(.)}{
550 ord($1) > 126 ? sprintf("\\x{%x}",ord($1)) : $1
551 }ge;
e8e72d41
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552
553 $first =~ /(.+)/ or die $first;
554 my $expect = "1${1}2";
555 $second =~ $re or die $second;
556 $expect .= " 3${1}4";
557
558 if ($class) {
559 my $copy1 = $first;
560 my $copy2;
561 tie $copy2, $class, $second;
b57b1734 562 is swrite("$format", $copy1, $copy2), $expect, $name;
e8e72d41
NC
563 my $obj = tied $copy2;
564 is $obj->[1], 1, 'value read exactly once';
565 } else {
566 my ($copy1, $copy2) = ($first, $second);
b57b1734 567 is swrite("$format", $copy1, $copy2), $expect, $name;
e8e72d41
NC
568 }
569 }
003d2c64 570 }
f3f2f1a3
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571 }
572 }
573 }
574}
9ccde9ea 575
35c6393c
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576{
577 # This will fail an assertion in 5.10.0 built with -DDEBUGGING (because
578 # pp_formline attempts to set SvCUR() on an SVt_RV). I suspect that it will
579 # be doing something similarly out of bounds on everything from 5.000
580 my $ref = [];
581 is swrite('>^*<', $ref), ">$ref<";
582 is swrite('>@*<', $ref), ">$ref<";
583}
584
d57f9278
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585format EMPTY =
586.
587
f5b75c1c 588my $test = curr_test();
6108250c 589
d57f9278
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590format Comment =
591ok @<<<<<
592$test
593.
594
d57f9278 595
64eff8b7 596# RT #8698 format bug with undefined _TOP
0bd0581c
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597
598open STDOUT_DUP, ">&STDOUT";
599my $oldfh = select STDOUT_DUP;
600$= = 10;
6108250c
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601{
602 local $~ = "Comment";
603 write;
604 curr_test($test + 1);
64eff8b7 605 is $-, 9;
6108250c 606 is $^, "STDOUT_DUP_TOP";
0bd0581c
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607}
608select $oldfh;
68ba3c2c 609close STDOUT_DUP;
d57f9278 610
ef595a33
MB
611*CmT = *{$::{Comment}}{FORMAT};
612ok defined *{$::{CmT}}{FORMAT}, "glob assign";
613
3808a683
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614
615# RT #91032: Check that "non-real" strings like tie and overload work,
616# especially that they re-compile the pattern on each FETCH, and that
617# they don't overrun the buffer
618
619
620{
621 package RT91032;
622
623 sub TIESCALAR { bless [] }
624 my $i = 0;
625 sub FETCH { $i++; "A$i @> Z\n" }
626
627 use overload '""' => \&FETCH;
628
629 tie my $f, 'RT91032';
630
631 formline $f, "a";
632 formline $f, "bc";
633 ::is $^A, "A1 a Z\nA2 bc Z\n", "RT 91032: tied";
634 $^A = '';
635
636 my $g = bless []; # has overloaded stringify
637 formline $g, "de";
638 formline $g, "f";
639 ::is $^A, "A3 de Z\nA4 f Z\n", "RT 91032: overloaded";
640 $^A = '';
641
642 my $h = [];
643 formline $h, "junk1";
644 formline $h, "junk2";
645 ::is ref($h), 'ARRAY', "RT 91032: array ref still a ref";
646 ::like "$h", qr/^ARRAY\(0x[0-9a-f]+\)$/, "RT 91032: array stringifies ok";
647 ::is $^A, "$h$h","RT 91032: stringified array";
648 $^A = '';
649
650 # used to overwrite the ~~ in the *original SV with spaces. Naughty!
651
652 my $orig = my $format = "^<<<<< ~~\n";
653 my $abc = "abc";
654 formline $format, $abc;
655 $^A ='';
656 ::is $format, $orig, "RT91032: don't overwrite orig format string";
657
b57b1734
DM
658 # check that ~ and ~~ are displayed correctly as whitespace,
659 # under the influence of various different types of border
660
661 for my $n (1,2) {
662 for my $lhs (' ', 'Y', '^<<<', '^|||', '^>>>') {
663 for my $rhs ('', ' ', 'Z', '^<<<', '^|||', '^>>>') {
664 my $fmt = "^<B$lhs" . ('~' x $n) . "$rhs\n";
665 my $sfmt = ($fmt =~ s/~/ /gr);
666 my ($a, $bc, $stop);
667 ($a, $bc, $stop) = ('a', 'bc', 's');
668 # $stop is to stop '~~' deleting the whole line
669 formline $sfmt, $stop, $a, $bc;
670 my $exp = $^A;
671 $^A = '';
672 ($a, $bc, $stop) = ('a', 'bc', 's');
673 formline $fmt, $stop, $a, $bc;
674 my $got = $^A;
675 $^A = '';
676 $fmt =~ s/\n/\\n/;
677 ::is($got, $exp, "chop munging: [$fmt]");
678 }
679 }
680 }
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681}
682
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683# check that '~ (delete current line if empty) works when
684# the target gets upgraded to uft8 (and re-allocated) midstream.
685
686{
687 my $format = "\x{100}@~\n"; # format is utf8
688 # this target is not utf8, but will expand (and get reallocated)
689 # when upgraded to utf8.
690 my $orig = "\x80\x81\x82";
691 local $^A = $orig;
692 my $empty = "";
693 formline $format, $empty;
694 is $^A , $orig, "~ and realloc";
695
696 # check similarly that trailing blank removal works ok
697
698 $format = "@<\n\x{100}"; # format is utf8
699 chop $format;
700 $orig = " ";
701 $^A = $orig;
702 formline $format, " ";
703 is $^A, "$orig\n", "end-of-line blanks and realloc";
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704
705 # and check this doesn't overflow the buffer
706
707 local $^A = '';
708 $format = "@* @####\n";
709 $orig = "x" x 100 . "\n";
710 formline $format, $orig, 12345;
711 is $^A, ("x" x 100) . " 12345\n", "\@* doesn't overflow";
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712
713 # make sure it can cope with formats > 64k
714
715 $format = 'x' x 65537;
716 $^A = '';
717 formline $format;
718 # don't use 'is' here, as the diag output will be too long!
719 ok $^A eq $format, ">64K";
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720}
721
3808a683 722
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723SKIP: {
724 skip_if_miniperl('miniperl does not support scalario');
60fe2d11 725 my $buf = "";
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726 open my $fh, ">", \$buf;
727 my $old_fh = select $fh;
728 local $~ = "CmT";
729 write;
730 select $old_fh;
731 close $fh;
732 is $buf, "ok $test\n", "write to duplicated format";
733}
734
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735format caret_A_test_TOP =
736T
737.
738
739format caret_A_test =
740L1
741L2
742L3
743L4
744.
745
746SKIP: {
747 skip_if_miniperl('miniperl does not support scalario');
748 my $buf = "";
749 open my $fh, ">", \$buf;
750 my $old_fh = select $fh;
751 local $^ = "caret_A_test_TOP";
752 local $~ = "caret_A_test";
753 local $= = 3;
754 local $^A = "A1\nA2\nA3\nA4\n";
755 write;
756 select $old_fh;
757 close $fh;
758 is $buf, "T\nA1\nA2\n\fT\nA3\nA4\n\fT\nL1\nL2\n\fT\nL3\nL4\n",
759 "assign to ^A sets FmLINES";
760}
761
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762fresh_perl_like(<<'EOP', qr/^Format STDOUT redefined at/, {stderr => 1}, '#64562 - Segmentation fault with redefined formats and warnings');
763#!./perl
764
765use strict;
766use warnings; # crashes!
767
768format =
769.
770
771write;
772
773format =
774.
775
776write;
777EOP
778
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779fresh_perl_is(<<'EOP', ">ARRAY<\ncrunch_eth\n", {stderr => 1}, '#79532 - formline coerces its arguments');
780use strict;
781use warnings;
782my $zamm = ['crunch_eth'];
783formline $zamm;
784printf ">%s<\n", ref $zamm;
785print "$zamm->[0]\n";
786EOP
787
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788#############################
789## Section 4
790## Add new tests *above* here
791#############################
792
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793# scary format testing from H.Merijn Brand
794
795# Just a complete test for format, including top-, left- and bottom marging
796# and format detection through glob entries
797
7b903762 798if ($^O eq 'VMS' || $^O eq 'MSWin32' || $^O eq 'dos' ||
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799 ($^O eq 'os2' and not eval '$OS2::can_fork')) {
800 $test = curr_test();
801 SKIP: {
802 skip "'|-' and '-|' not supported", $tests - $test + 1;
803 }
804 exit(0);
805}
806
807
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808$^ = "STDOUT_TOP";
809$= = 7; # Page length
810$- = 0; # Lines left
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811my $ps = $^L; $^L = ""; # Catch the page separator
812my $tm = 1; # Top margin (empty lines before first output)
813my $bm = 2; # Bottom marging (empty lines between last text and footer)
814my $lm = 4; # Left margin (indent in spaces)
815
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816# -----------------------------------------------------------------------
817#
818# execute the rest of the script in a child process. The parent reads the
819# output from the child and compares it with <DATA>.
820
821my @data = <DATA>;
822
823select ((select (STDOUT), $| = 1)[0]); # flush STDOUT
824
825my $opened = open FROM_CHILD, "-|";
826unless (defined $opened) {
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827 fail "open gave $!";
828 exit 0;
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829}
830
831if ($opened) {
832 # in parent here
833
6108250c 834 pass 'open';
9ccde9ea 835 my $s = " " x $lm;
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836 while (<FROM_CHILD>) {
837 unless (@data) {
6108250c 838 fail 'too much output';
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839 exit;
840 }
9ccde9ea 841 s/^/$s/;
68ba3c2c 842 my $exp = shift @data;
6108250c 843 is $_, $exp;
9ccde9ea 844 }
68ba3c2c 845 close FROM_CHILD;
6108250c 846 is "@data", "", "correct length of output";
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847 exit;
848}
849
850# in child here
6108250c 851$::NO_ENDING = 1;
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852
853 select ((select (STDOUT), $| = 1)[0]);
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854$tm = "\n" x $tm;
855$= -= $bm + 1; # count one for the trailing "----"
856my $lastmin = 0;
857
858my @E;
859
860sub wryte
861{
862 $lastmin = $-;
863 write;
864 } # wryte;
865
866sub footer
867{
868 $% == 1 and return "";
869
870 $lastmin < $= and print "\n" x $lastmin;
871 print "\n" x $bm, "----\n", $ps;
872 $lastmin = $-;
873 "";
874 } # footer
875
876# Yes, this is sick ;-)
877format TOP =
878@* ~
879@{[footer]}
880@* ~
881$tm
882.
883
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884format ENTRY =
885@ @<<<<~~
886@{(shift @E)||["",""]}
887.
888
889format EOR =
890- -----
891.
892
893sub has_format ($)
894{
895 my $fmt = shift;
896 exists $::{$fmt} or return 0;
897 $^O eq "MSWin32" or return defined *{$::{$fmt}}{FORMAT};
898 open my $null, "> /dev/null" or die;
899 my $fh = select $null;
900 local $~ = $fmt;
901 eval "write";
902 select $fh;
903 $@?0:1;
904 } # has_format
905
d57f9278 906$^ = has_format ("TOP") ? "TOP" : "EMPTY";
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907has_format ("ENTRY") or die "No format defined for ENTRY";
908foreach my $e ( [ map { [ $_, "Test$_" ] } 1 .. 7 ],
909 [ map { [ $_, "${_}tseT" ] } 1 .. 5 ]) {
910 @E = @$e;
911 local $~ = "ENTRY";
912 wryte;
913 has_format ("EOR") or next;
914 local $~ = "EOR";
915 wryte;
916 }
917if (has_format ("EOF")) {
918 local $~ = "EOF";
919 wryte;
920 }
921
922close STDOUT;
923
ea42cebc 924# That was test 48.
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925
926__END__
927
928 1 Test1
929 2 Test2
930 3 Test3
931
932
933 ----
934 \f
935 4 Test4
936 5 Test5
937 6 Test6
938
939
940 ----
941 \f
942 7 Test7
943 - -----
944
945
946
947 ----
948 \f
949 1 1tseT
950 2 2tseT
951 3 3tseT
952
953
954 ----
955 \f
956 4 4tseT
957 5 5tseT
958 - -----