Commit | Line | Data |
a687059c |
1 | #!./perl |
2 | |
9c007264 |
3 | BEGIN { |
4 | chdir 't' if -d 't'; |
f34362ee |
5 | @INC = qw(. ../lib); require 'test.pl'; |
9c007264 |
6 | } |
9f1b1f2d |
7 | use warnings; |
f34362ee |
8 | plan( tests => 143 ); |
a687059c |
9 | |
71a29c3c |
10 | # these shouldn't hang |
11 | { |
12 | no warnings; |
13 | sort { for ($_ = 0;; $_++) {} } @a; |
14 | sort { while(1) {} } @a; |
15 | sort { while(1) { last; } } @a; |
16 | sort { while(0) { last; } } @a; |
1937c63e |
17 | |
18 | # Change 26011: Re: A surprising segfault |
19 | map scalar(sort(+())), ('')x68; |
71a29c3c |
20 | } |
21 | |
9f1b1f2d |
22 | sub Backwards { $a lt $b ? 1 : $a gt $b ? -1 : 0 } |
23 | sub Backwards_stacked($$) { my($a,$b) = @_; $a lt $b ? 1 : $a gt $b ? -1 : 0 } |
9850bf21 |
24 | sub Backwards_other { $a lt $b ? 1 : $a gt $b ? -1 : 0 } |
a687059c |
25 | |
9d116dd7 |
26 | my $upperfirst = 'A' lt 'a'; |
27 | |
28 | # Beware: in future this may become hairier because of possible |
59608b94 |
29 | # collation complications: qw(A a B b) can be sorted at least as |
9d116dd7 |
30 | # any of the following |
31 | # |
32 | # A a B b |
33 | # A B a b |
34 | # a b A B |
35 | # a A b B |
36 | # |
37 | # All the above orders make sense. |
38 | # |
39 | # That said, EBCDIC sorts all small letters first, as opposed |
40 | # to ASCII which sorts all big letters first. |
41 | |
a687059c |
42 | @harry = ('dog','cat','x','Cain','Abel'); |
2f52a358 |
43 | @george = ('gone','chased','yz','punished','Axed'); |
a687059c |
44 | |
45 | $x = join('', sort @harry); |
9d116dd7 |
46 | $expected = $upperfirst ? 'AbelCaincatdogx' : 'catdogxAbelCain'; |
f34362ee |
47 | |
48 | cmp_ok($x,'eq',$expected,'upper first 1'); |
a687059c |
49 | |
9f1b1f2d |
50 | $x = join('', sort( Backwards @harry)); |
9d116dd7 |
51 | $expected = $upperfirst ? 'xdogcatCainAbel' : 'CainAbelxdogcat'; |
f34362ee |
52 | |
53 | cmp_ok($x,'eq',$expected,'upper first 2'); |
a687059c |
54 | |
9f1b1f2d |
55 | $x = join('', sort( Backwards_stacked @harry)); |
43481408 |
56 | $expected = $upperfirst ? 'xdogcatCainAbel' : 'CainAbelxdogcat'; |
f34362ee |
57 | |
58 | cmp_ok($x,'eq',$expected,'upper first 3'); |
43481408 |
59 | |
a687059c |
60 | $x = join('', sort @george, 'to', @harry); |
9d116dd7 |
61 | $expected = $upperfirst ? |
62 | 'AbelAxedCaincatchaseddoggonepunishedtoxyz' : |
63 | 'catchaseddoggonepunishedtoxyzAbelAxedCain' ; |
03a14243 |
64 | |
f34362ee |
65 | cmp_ok($x,'eq',$expected,'upper first 4'); |
66 | $" = ' '; |
03a14243 |
67 | @a = (); |
68 | @b = reverse @a; |
f34362ee |
69 | cmp_ok("@b",'eq',"",'reverse 1'); |
03a14243 |
70 | |
71 | @a = (1); |
72 | @b = reverse @a; |
f34362ee |
73 | cmp_ok("@b",'eq',"1",'reverse 2'); |
03a14243 |
74 | |
75 | @a = (1,2); |
76 | @b = reverse @a; |
f34362ee |
77 | cmp_ok("@b",'eq',"2 1",'reverse 3'); |
03a14243 |
78 | |
79 | @a = (1,2,3); |
80 | @b = reverse @a; |
f34362ee |
81 | cmp_ok("@b",'eq',"3 2 1",'reverse 4'); |
03a14243 |
82 | |
83 | @a = (1,2,3,4); |
84 | @b = reverse @a; |
f34362ee |
85 | cmp_ok("@b",'eq',"4 3 2 1",'reverse 5'); |
55204971 |
86 | |
87 | @a = (10,2,3,4); |
88 | @b = sort {$a <=> $b;} @a; |
f34362ee |
89 | cmp_ok("@b",'eq',"2 3 4 10",'sort numeric'); |
988174c1 |
90 | |
9f1b1f2d |
91 | $sub = 'Backwards'; |
988174c1 |
92 | $x = join('', sort $sub @harry); |
9d116dd7 |
93 | $expected = $upperfirst ? 'xdogcatCainAbel' : 'CainAbelxdogcat'; |
f34362ee |
94 | |
95 | cmp_ok($x,'eq',$expected,'sorter sub name in var 1'); |
43481408 |
96 | |
9f1b1f2d |
97 | $sub = 'Backwards_stacked'; |
43481408 |
98 | $x = join('', sort $sub @harry); |
99 | $expected = $upperfirst ? 'xdogcatCainAbel' : 'CainAbelxdogcat'; |
f34362ee |
100 | |
101 | cmp_ok($x,'eq',$expected,'sorter sub name in var 2'); |
988174c1 |
102 | |
cd5de442 |
103 | # literals, combinations |
104 | |
105 | @b = sort (4,1,3,2); |
f34362ee |
106 | cmp_ok("@b",'eq','1 2 3 4','just sort'); |
107 | |
cd5de442 |
108 | |
109 | @b = sort grep { $_ } (4,1,3,2); |
f34362ee |
110 | cmp_ok("@b",'eq','1 2 3 4','grep then sort'); |
111 | |
cd5de442 |
112 | |
113 | @b = sort map { $_ } (4,1,3,2); |
f34362ee |
114 | cmp_ok("@b",'eq','1 2 3 4','map then sort'); |
115 | |
cd5de442 |
116 | |
117 | @b = sort reverse (4,1,3,2); |
f34362ee |
118 | cmp_ok("@b",'eq','1 2 3 4','reverse then sort'); |
119 | |
120 | |
7bac28a0 |
121 | |
9850bf21 |
122 | sub twoface { no warnings 'redefine'; *twoface = sub { $a <=> $b }; &twoface } |
7bac28a0 |
123 | eval { @b = sort twoface 4,1,3,2 }; |
f34362ee |
124 | cmp_ok("@b",'eq','1 2 3 4','redefine sort sub inside the sort sub'); |
125 | |
7bac28a0 |
126 | |
9f1b1f2d |
127 | eval { no warnings 'redefine'; *twoface = sub { &Backwards } }; |
f34362ee |
128 | ok(!$@,"redefining sort subs outside the sort \$@=[$@]"); |
7bac28a0 |
129 | |
130 | eval { @b = sort twoface 4,1,3,2 }; |
f34362ee |
131 | cmp_ok("@b",'eq','4 3 2 1','twoface redefinition'); |
7bac28a0 |
132 | |
9f1b1f2d |
133 | { |
134 | no warnings 'redefine'; |
9850bf21 |
135 | *twoface = sub { *twoface = *Backwards_other; $a <=> $b }; |
9f1b1f2d |
136 | } |
f34362ee |
137 | |
9850bf21 |
138 | eval { @b = sort twoface 4,1,9,5 }; |
f34362ee |
139 | ok(($@ eq "" && "@b" eq "1 4 5 9"),'redefinition should not take effect during the sort'); |
7bac28a0 |
140 | |
9f1b1f2d |
141 | { |
142 | no warnings 'redefine'; |
143 | *twoface = sub { |
7bac28a0 |
144 | eval 'sub twoface { $a <=> $b }'; |
f34362ee |
145 | die($@ eq "" ? "good\n" : "bad\n"); |
7bac28a0 |
146 | $a <=> $b; |
147 | }; |
9f1b1f2d |
148 | } |
7bac28a0 |
149 | eval { @b = sort twoface 4,1 }; |
f34362ee |
150 | cmp_ok(substr($@,0,4), 'eq', 'good', 'twoface eval'); |
15f0808c |
151 | |
152 | eval <<'CODE'; |
9f1b1f2d |
153 | my @result = sort main'Backwards 'one', 'two'; |
15f0808c |
154 | CODE |
f34362ee |
155 | cmp_ok($@,'eq','',q(old skool package)); |
15f0808c |
156 | |
157 | eval <<'CODE'; |
158 | # "sort 'one', 'two'" should not try to parse "'one" as a sort sub |
159 | my @result = sort 'one', 'two'; |
160 | CODE |
f34362ee |
161 | cmp_ok($@,'eq','',q(one is not a sub)); |
c6e96bcb |
162 | |
163 | { |
9f1b1f2d |
164 | my $sortsub = \&Backwards; |
165 | my $sortglob = *Backwards; |
166 | my $sortglobr = \*Backwards; |
167 | my $sortname = 'Backwards'; |
c6e96bcb |
168 | @b = sort $sortsub 4,1,3,2; |
f34362ee |
169 | cmp_ok("@b",'eq','4 3 2 1','sortname 1'); |
c6e96bcb |
170 | @b = sort $sortglob 4,1,3,2; |
f34362ee |
171 | cmp_ok("@b",'eq','4 3 2 1','sortname 2'); |
c6e96bcb |
172 | @b = sort $sortname 4,1,3,2; |
f34362ee |
173 | cmp_ok("@b",'eq','4 3 2 1','sortname 3'); |
62f274bf |
174 | @b = sort $sortglobr 4,1,3,2; |
f34362ee |
175 | cmp_ok("@b",'eq','4 3 2 1','sortname 4'); |
43481408 |
176 | } |
177 | |
178 | { |
9f1b1f2d |
179 | my $sortsub = \&Backwards_stacked; |
180 | my $sortglob = *Backwards_stacked; |
181 | my $sortglobr = \*Backwards_stacked; |
182 | my $sortname = 'Backwards_stacked'; |
43481408 |
183 | @b = sort $sortsub 4,1,3,2; |
f34362ee |
184 | cmp_ok("@b",'eq','4 3 2 1','sortname 5'); |
43481408 |
185 | @b = sort $sortglob 4,1,3,2; |
f34362ee |
186 | cmp_ok("@b",'eq','4 3 2 1','sortname 6'); |
43481408 |
187 | @b = sort $sortname 4,1,3,2; |
f34362ee |
188 | cmp_ok("@b",'eq','4 3 2 1','sortname 7'); |
43481408 |
189 | @b = sort $sortglobr 4,1,3,2; |
f34362ee |
190 | cmp_ok("@b",'eq','4 3 2 1','sortname 8'); |
c6e96bcb |
191 | } |
192 | |
193 | { |
9f1b1f2d |
194 | local $sortsub = \&Backwards; |
195 | local $sortglob = *Backwards; |
196 | local $sortglobr = \*Backwards; |
197 | local $sortname = 'Backwards'; |
c6e96bcb |
198 | @b = sort $sortsub 4,1,3,2; |
f34362ee |
199 | cmp_ok("@b",'eq','4 3 2 1','sortname local 1'); |
c6e96bcb |
200 | @b = sort $sortglob 4,1,3,2; |
f34362ee |
201 | cmp_ok("@b",'eq','4 3 2 1','sortname local 2'); |
c6e96bcb |
202 | @b = sort $sortname 4,1,3,2; |
f34362ee |
203 | cmp_ok("@b",'eq','4 3 2 1','sortname local 3'); |
62f274bf |
204 | @b = sort $sortglobr 4,1,3,2; |
f34362ee |
205 | cmp_ok("@b",'eq','4 3 2 1','sortname local 4'); |
43481408 |
206 | } |
207 | |
208 | { |
9f1b1f2d |
209 | local $sortsub = \&Backwards_stacked; |
210 | local $sortglob = *Backwards_stacked; |
211 | local $sortglobr = \*Backwards_stacked; |
212 | local $sortname = 'Backwards_stacked'; |
43481408 |
213 | @b = sort $sortsub 4,1,3,2; |
f34362ee |
214 | cmp_ok("@b",'eq','4 3 2 1','sortname local 5'); |
43481408 |
215 | @b = sort $sortglob 4,1,3,2; |
f34362ee |
216 | cmp_ok("@b",'eq','4 3 2 1','sortname local 6'); |
43481408 |
217 | @b = sort $sortname 4,1,3,2; |
f34362ee |
218 | cmp_ok("@b",'eq','4 3 2 1','sortname local 7'); |
43481408 |
219 | @b = sort $sortglobr 4,1,3,2; |
f34362ee |
220 | cmp_ok("@b",'eq','4 3 2 1','sortname local 8'); |
c6e96bcb |
221 | } |
222 | |
9c007264 |
223 | ## exercise sort builtins... ($a <=> $b already tested) |
224 | @a = ( 5, 19, 1996, 255, 90 ); |
5d4fa709 |
225 | @b = sort { |
226 | my $dummy; # force blockness |
227 | return $b <=> $a |
228 | } @a; |
f34362ee |
229 | cmp_ok("@b",'eq','1996 255 90 19 5','force blockness'); |
230 | |
9c007264 |
231 | $x = join('', sort { $a cmp $b } @harry); |
232 | $expected = $upperfirst ? 'AbelCaincatdogx' : 'catdogxAbelCain'; |
f34362ee |
233 | cmp_ok($x,'eq',$expected,'a cmp b'); |
234 | |
9c007264 |
235 | $x = join('', sort { $b cmp $a } @harry); |
236 | $expected = $upperfirst ? 'xdogcatCainAbel' : 'CainAbelxdogcat'; |
f34362ee |
237 | cmp_ok($x,'eq',$expected,'b cmp a'); |
238 | |
9c007264 |
239 | { |
240 | use integer; |
241 | @b = sort { $a <=> $b } @a; |
f34362ee |
242 | cmp_ok("@b",'eq','5 19 90 255 1996','integer a <=> b'); |
243 | |
9c007264 |
244 | @b = sort { $b <=> $a } @a; |
f34362ee |
245 | cmp_ok("@b",'eq','1996 255 90 19 5','integer b <=> a'); |
246 | |
9c007264 |
247 | $x = join('', sort { $a cmp $b } @harry); |
248 | $expected = $upperfirst ? 'AbelCaincatdogx' : 'catdogxAbelCain'; |
f34362ee |
249 | cmp_ok($x,'eq',$expected,'integer a cmp b'); |
250 | |
9c007264 |
251 | $x = join('', sort { $b cmp $a } @harry); |
252 | $expected = $upperfirst ? 'xdogcatCainAbel' : 'CainAbelxdogcat'; |
f34362ee |
253 | cmp_ok($x,'eq',$expected,'integer b cmp a'); |
254 | |
9c007264 |
255 | } |
e507f050 |
256 | |
f34362ee |
257 | |
258 | |
e507f050 |
259 | $x = join('', sort { $a <=> $b } 3, 1, 2); |
f34362ee |
260 | cmp_ok($x,'eq','123',q(optimized-away comparison block doesn't take any other arguments away with it)); |
e507f050 |
261 | |
9c007264 |
262 | # test sorting in non-main package |
263 | package Foo; |
264 | @a = ( 5, 19, 1996, 255, 90 ); |
265 | @b = sort { $b <=> $a } @a; |
f34362ee |
266 | main::cmp_ok("@b",'eq','1996 255 90 19 5','not in main:: 1'); |
267 | |
43481408 |
268 | |
9f1b1f2d |
269 | @b = sort main::Backwards_stacked @a; |
f34362ee |
270 | main::cmp_ok("@b",'eq','90 5 255 1996 19','not in main:: 2'); |
271 | |
8e3f9bdf |
272 | |
273 | # check if context for sort arguments is handled right |
274 | |
f34362ee |
275 | |
8e3f9bdf |
276 | sub test_if_list { |
277 | my $gimme = wantarray; |
f34362ee |
278 | main::is($gimme,1,'wantarray 1'); |
279 | |
280 | |
8e3f9bdf |
281 | } |
282 | my $m = sub { $a <=> $b }; |
283 | |
284 | sub cxt_one { sort $m test_if_list() } |
285 | cxt_one(); |
286 | sub cxt_two { sort { $a <=> $b } test_if_list() } |
287 | cxt_two(); |
288 | sub cxt_three { sort &test_if_list() } |
289 | cxt_three(); |
290 | |
291 | sub test_if_scalar { |
292 | my $gimme = wantarray; |
f34362ee |
293 | main::is(!($gimme or !defined($gimme)),1,'wantarray 2'); |
294 | |
295 | |
8e3f9bdf |
296 | } |
297 | |
298 | $m = \&test_if_scalar; |
299 | sub cxt_four { sort $m 1,2 } |
300 | @x = cxt_four(); |
301 | sub cxt_five { sort { test_if_scalar($a,$b); } 1,2 } |
302 | @x = cxt_five(); |
303 | sub cxt_six { sort test_if_scalar 1,2 } |
304 | @x = cxt_six(); |
8e664e10 |
305 | |
306 | # test against a reentrancy bug |
307 | { |
308 | package Bar; |
309 | sub compare { $a cmp $b } |
310 | sub reenter { my @force = sort compare qw/a b/ } |
311 | } |
312 | { |
313 | my($def, $init) = (0, 0); |
314 | @b = sort { |
315 | $def = 1 if defined $Bar::a; |
316 | Bar::reenter() unless $init++; |
317 | $a <=> $b |
318 | } qw/4 3 1 2/; |
f34362ee |
319 | main::cmp_ok("@b",'eq','1 2 3 4','reenter 1'); |
320 | |
321 | main::ok(!$def,'reenter 2'); |
8e664e10 |
322 | } |
f0670693 |
323 | |
f34362ee |
324 | |
f0670693 |
325 | { |
326 | sub routine { "one", "two" }; |
327 | @a = sort(routine(1)); |
f34362ee |
328 | main::cmp_ok("@a",'eq',"one two",'bug id 19991001.003'); |
f0670693 |
329 | } |
fe1bc4cf |
330 | |
331 | |
f34362ee |
332 | #my $test = 59; |
333 | sub ok { main::cmp_ok($_[0],'eq',$_[1],$_[2]); |
334 | # print "not " unless $_[0] eq $_[1]; |
335 | # print "ok $test - $_[2]\n"; |
336 | # print "#[$_[0]] ne [$_[1]]\n" unless $_[0] eq $_[1]; |
337 | # $test++; |
fe1bc4cf |
338 | } |
339 | |
340 | # check for in-place optimisation of @a = sort @a |
341 | { |
342 | my ($r1,$r2,@a); |
343 | our @g; |
344 | @g = (3,2,1); $r1 = \$g[2]; @g = sort @g; $r2 = \$g[0]; |
345 | ok "$r1-@g", "$r2-1 2 3", "inplace sort of global"; |
346 | |
347 | @a = qw(b a c); $r1 = \$a[1]; @a = sort @a; $r2 = \$a[0]; |
348 | ok "$r1-@a", "$r2-a b c", "inplace sort of lexical"; |
349 | |
350 | @g = (2,3,1); $r1 = \$g[1]; @g = sort { $b <=> $a } @g; $r2 = \$g[0]; |
351 | ok "$r1-@g", "$r2-3 2 1", "inplace reversed sort of global"; |
352 | |
353 | @g = (2,3,1); |
354 | $r1 = \$g[1]; @g = sort { $a<$b?1:$a>$b?-1:0 } @g; $r2 = \$g[0]; |
355 | ok "$r1-@g", "$r2-3 2 1", "inplace custom sort of global"; |
356 | |
357 | sub mysort { $b cmp $a }; |
358 | @a = qw(b c a); $r1 = \$a[1]; @a = sort mysort @a; $r2 = \$a[0]; |
359 | ok "$r1-@a", "$r2-c b a", "inplace sort with function of lexical"; |
360 | |
361 | use Tie::Array; |
db7511db |
362 | my @t; |
363 | tie @t, 'Tie::StdArray'; |
fe1bc4cf |
364 | |
db7511db |
365 | @t = qw(b c a); @t = sort @t; |
366 | ok "@t", "a b c", "inplace sort of tied array"; |
fe1bc4cf |
367 | |
db7511db |
368 | @t = qw(b c a); @t = sort mysort @t; |
369 | ok "@t", "c b a", "inplace sort of tied array with function"; |
370 | |
371 | # [perl #29790] don't optimise @a = ('a', sort @a) ! |
372 | |
373 | @g = (3,2,1); @g = ('0', sort @g); |
374 | ok "@g", "0 1 2 3", "un-inplace sort of global"; |
375 | @g = (3,2,1); @g = (sort(@g),'4'); |
376 | ok "@g", "1 2 3 4", "un-inplace sort of global 2"; |
377 | |
378 | @a = qw(b a c); @a = ('x', sort @a); |
379 | ok "@a", "x a b c", "un-inplace sort of lexical"; |
380 | @a = qw(b a c); @a = ((sort @a), 'x'); |
381 | ok "@a", "a b c x", "un-inplace sort of lexical 2"; |
382 | |
383 | @g = (2,3,1); @g = ('0', sort { $b <=> $a } @g); |
384 | ok "@g", "0 3 2 1", "un-inplace reversed sort of global"; |
385 | @g = (2,3,1); @g = ((sort { $b <=> $a } @g),'4'); |
386 | ok "@g", "3 2 1 4", "un-inplace reversed sort of global 2"; |
387 | |
388 | @g = (2,3,1); @g = ('0', sort { $a<$b?1:$a>$b?-1:0 } @g); |
389 | ok "@g", "0 3 2 1", "un-inplace custom sort of global"; |
390 | @g = (2,3,1); @g = ((sort { $a<$b?1:$a>$b?-1:0 } @g),'4'); |
391 | ok "@g", "3 2 1 4", "un-inplace custom sort of global 2"; |
392 | |
393 | @a = qw(b c a); @a = ('x', sort mysort @a); |
394 | ok "@a", "x c b a", "un-inplace sort with function of lexical"; |
395 | @a = qw(b c a); @a = ((sort mysort @a),'x'); |
396 | ok "@a", "c b a x", "un-inplace sort with function of lexical 2"; |
fe1bc4cf |
397 | } |
398 | |
eb209983 |
399 | # Test optimisations of reversed sorts. As we now guarantee stability by |
400 | # default, # optimisations which do not provide this are bogus. |
fe1bc4cf |
401 | |
eb209983 |
402 | { |
403 | package Oscalar; |
404 | use overload (qw("" stringify 0+ numify fallback 1)); |
405 | |
406 | sub new { |
407 | bless [$_[1], $_[2]], $_[0]; |
408 | } |
409 | |
410 | sub stringify { $_[0]->[0] } |
411 | |
412 | sub numify { $_[0]->[1] } |
413 | } |
414 | |
415 | sub generate { |
416 | my $count = 0; |
417 | map {new Oscalar $_, $count++} qw(A A A B B B C C C); |
418 | } |
419 | |
420 | my @input = &generate; |
421 | my @output = sort @input; |
422 | ok join(" ", map {0+$_} @output), "0 1 2 3 4 5 6 7 8", "Simple stable sort"; |
423 | |
424 | @input = &generate; |
425 | @input = sort @input; |
426 | ok join(" ", map {0+$_} @input), "0 1 2 3 4 5 6 7 8", |
427 | "Simple stable in place sort"; |
428 | |
429 | # This won't be very interesting |
430 | @input = &generate; |
431 | @output = sort {$a <=> $b} @input; |
432 | ok "@output", "A A A B B B C C C", 'stable $a <=> $b sort'; |
433 | |
434 | @input = &generate; |
435 | @output = sort {$a cmp $b} @input; |
436 | ok join(" ", map {0+$_} @output), "0 1 2 3 4 5 6 7 8", 'stable $a cmp $b sort'; |
437 | |
438 | @input = &generate; |
439 | @input = sort {$a cmp $b} @input; |
440 | ok join(" ", map {0+$_} @input), "0 1 2 3 4 5 6 7 8", |
441 | 'stable $a cmp $b in place sort'; |
442 | |
443 | @input = &generate; |
444 | @output = sort {$b cmp $a} @input; |
445 | ok join(" ", map {0+$_} @output), "6 7 8 3 4 5 0 1 2", 'stable $b cmp $a sort'; |
446 | |
447 | @input = &generate; |
448 | @input = sort {$b cmp $a} @input; |
449 | ok join(" ", map {0+$_} @input), "6 7 8 3 4 5 0 1 2", |
450 | 'stable $b cmp $a in place sort'; |
451 | |
75dd5fa4 |
452 | @input = &generate; |
eb209983 |
453 | @output = reverse sort @input; |
454 | ok join(" ", map {0+$_} @output), "8 7 6 5 4 3 2 1 0", "Reversed stable sort"; |
455 | |
456 | @input = &generate; |
457 | @input = reverse sort @input; |
458 | ok join(" ", map {0+$_} @input), "8 7 6 5 4 3 2 1 0", |
459 | "Reversed stable in place sort"; |
460 | |
75dd5fa4 |
461 | @input = &generate; |
462 | my $output = reverse sort @input; |
463 | ok $output, "CCCBBBAAA", "Reversed stable sort in scalar context"; |
464 | |
eb209983 |
465 | |
466 | @input = &generate; |
467 | @output = reverse sort {$a cmp $b} @input; |
468 | ok join(" ", map {0+$_} @output), "8 7 6 5 4 3 2 1 0", |
469 | 'reversed stable $a cmp $b sort'; |
470 | |
471 | @input = &generate; |
472 | @input = reverse sort {$a cmp $b} @input; |
473 | ok join(" ", map {0+$_} @input), "8 7 6 5 4 3 2 1 0", |
474 | 'revesed stable $a cmp $b in place sort'; |
475 | |
476 | @input = &generate; |
7e7a548e |
477 | $output = reverse sort {$a cmp $b} @input; |
75dd5fa4 |
478 | ok $output, "CCCBBBAAA", 'Reversed stable $a cmp $b sort in scalar context'; |
479 | |
480 | @input = &generate; |
eb209983 |
481 | @output = reverse sort {$b cmp $a} @input; |
482 | ok join(" ", map {0+$_} @output), "2 1 0 5 4 3 8 7 6", |
483 | 'reversed stable $b cmp $a sort'; |
484 | |
485 | @input = &generate; |
486 | @input = reverse sort {$b cmp $a} @input; |
487 | ok join(" ", map {0+$_} @input), "2 1 0 5 4 3 8 7 6", |
488 | 'revesed stable $b cmp $a in place sort'; |
489 | |
75dd5fa4 |
490 | @input = &generate; |
491 | $output = reverse sort {$b cmp $a} @input; |
492 | ok $output, "AAABBBCCC", 'Reversed stable $b cmp $a sort in scalar context'; |
493 | |
7e7a548e |
494 | sub stuff { |
495 | # Something complex enough to defeat any constant folding optimiser |
496 | $$ - $$; |
497 | } |
498 | |
499 | @input = &generate; |
500 | @output = reverse sort {stuff || $a cmp $b} @input; |
501 | ok join(" ", map {0+$_} @output), "8 7 6 5 4 3 2 1 0", |
502 | 'reversed stable complex sort'; |
503 | |
504 | @input = &generate; |
505 | @input = reverse sort {stuff || $a cmp $b} @input; |
506 | ok join(" ", map {0+$_} @input), "8 7 6 5 4 3 2 1 0", |
507 | 'revesed stable complex in place sort'; |
508 | |
509 | @input = &generate; |
510 | $output = reverse sort {stuff || $a cmp $b } @input; |
511 | ok $output, "CCCBBBAAA", 'Reversed stable complex sort in scalar context'; |
512 | |
a1824f2a |
513 | sub sortr { |
514 | reverse sort @_; |
515 | } |
516 | |
517 | @output = sortr &generate; |
518 | ok join(" ", map {0+$_} @output), "8 7 6 5 4 3 2 1 0", |
519 | 'reversed stable sort return list context'; |
520 | $output = sortr &generate; |
521 | ok $output, "CCCBBBAAA", |
522 | 'reversed stable sort return scalar context'; |
523 | |
524 | sub sortcmpr { |
525 | reverse sort {$a cmp $b} @_; |
526 | } |
527 | |
528 | @output = sortcmpr &generate; |
529 | ok join(" ", map {0+$_} @output), "8 7 6 5 4 3 2 1 0", |
530 | 'reversed stable $a cmp $b sort return list context'; |
531 | $output = sortcmpr &generate; |
532 | ok $output, "CCCBBBAAA", |
533 | 'reversed stable $a cmp $b sort return scalar context'; |
534 | |
535 | sub sortcmprba { |
536 | reverse sort {$b cmp $a} @_; |
537 | } |
538 | |
539 | @output = sortcmprba &generate; |
540 | ok join(" ", map {0+$_} @output), "2 1 0 5 4 3 8 7 6", |
541 | 'reversed stable $b cmp $a sort return list context'; |
542 | $output = sortcmprba &generate; |
543 | ok $output, "AAABBBCCC", |
544 | 'reversed stable $b cmp $a sort return scalar context'; |
eb209983 |
545 | |
7e7a548e |
546 | sub sortcmprq { |
547 | reverse sort {stuff || $a cmp $b} @_; |
548 | } |
549 | |
550 | @output = sortcmpr &generate; |
551 | ok join(" ", map {0+$_} @output), "8 7 6 5 4 3 2 1 0", |
552 | 'reversed stable complex sort return list context'; |
553 | $output = sortcmpr &generate; |
554 | ok $output, "CCCBBBAAA", |
555 | 'reversed stable complex sort return scalar context'; |
556 | |
eb209983 |
557 | # And now with numbers |
558 | |
559 | sub generate1 { |
560 | my $count = 'A'; |
561 | map {new Oscalar $count++, $_} 0, 0, 0, 1, 1, 1, 2, 2, 2; |
562 | } |
563 | |
564 | # This won't be very interesting |
565 | @input = &generate1; |
566 | @output = sort {$a cmp $b} @input; |
567 | ok "@output", "A B C D E F G H I", 'stable $a cmp $b sort'; |
568 | |
569 | @input = &generate1; |
570 | @output = sort {$a <=> $b} @input; |
571 | ok "@output", "A B C D E F G H I", 'stable $a <=> $b sort'; |
572 | |
573 | @input = &generate1; |
574 | @input = sort {$a <=> $b} @input; |
575 | ok "@input", "A B C D E F G H I", 'stable $a <=> $b in place sort'; |
576 | |
577 | @input = &generate1; |
578 | @output = sort {$b <=> $a} @input; |
579 | ok "@output", "G H I D E F A B C", 'stable $b <=> $a sort'; |
580 | |
581 | @input = &generate1; |
582 | @input = sort {$b <=> $a} @input; |
583 | ok "@input", "G H I D E F A B C", 'stable $b <=> $a in place sort'; |
584 | |
59608b94 |
585 | # test that optimized {$b cmp $a} and {$b <=> $a} remain stable |
586 | # (new in 5.9) without overloading |
587 | { no warnings; |
588 | @b = sort { $b <=> $a } @input = qw/5first 6first 5second 6second/; |
589 | ok "@b" , "6first 6second 5first 5second", "optimized {$b <=> $a} without overloading" ; |
590 | @input = sort {$b <=> $a} @input; |
591 | ok "@input" , "6first 6second 5first 5second","inline optimized {$b <=> $a} without overloading" ; |
592 | }; |
593 | |
eb209983 |
594 | # These two are actually doing string cmp on 0 1 and 2 |
75dd5fa4 |
595 | @input = &generate1; |
eb209983 |
596 | @output = reverse sort @input; |
597 | ok "@output", "I H G F E D C B A", "Reversed stable sort"; |
598 | |
599 | @input = &generate1; |
600 | @input = reverse sort @input; |
601 | ok "@input", "I H G F E D C B A", "Reversed stable in place sort"; |
602 | |
603 | @input = &generate1; |
75dd5fa4 |
604 | $output = reverse sort @input; |
605 | ok $output, "IHGFEDCBA", "Reversed stable sort in scalar context"; |
606 | |
607 | @input = &generate1; |
eb209983 |
608 | @output = reverse sort {$a <=> $b} @input; |
609 | ok "@output", "I H G F E D C B A", 'reversed stable $a <=> $b sort'; |
610 | |
611 | @input = &generate1; |
612 | @input = reverse sort {$a <=> $b} @input; |
613 | ok "@input", "I H G F E D C B A", 'revesed stable $a <=> $b in place sort'; |
fe1bc4cf |
614 | |
eb209983 |
615 | @input = &generate1; |
75dd5fa4 |
616 | $output = reverse sort {$a <=> $b} @input; |
617 | ok $output, "IHGFEDCBA", 'reversed stable $a <=> $b sort in scalar context'; |
618 | |
619 | @input = &generate1; |
eb209983 |
620 | @output = reverse sort {$b <=> $a} @input; |
621 | ok "@output", "C B A F E D I H G", 'reversed stable $b <=> $a sort'; |
fe1bc4cf |
622 | |
eb209983 |
623 | @input = &generate1; |
624 | @input = reverse sort {$b <=> $a} @input; |
625 | ok "@input", "C B A F E D I H G", 'revesed stable $b <=> $a in place sort'; |
75dd5fa4 |
626 | |
627 | @input = &generate1; |
628 | $output = reverse sort {$b <=> $a} @input; |
629 | ok $output, "CBAFEDIHG", 'reversed stable $b <=> $a sort in scalar context'; |
a1824f2a |
630 | |
7e7a548e |
631 | @input = &generate1; |
632 | @output = reverse sort {stuff || $a <=> $b} @input; |
633 | ok "@output", "I H G F E D C B A", 'reversed stable complex sort'; |
634 | |
635 | @input = &generate1; |
636 | @input = reverse sort {stuff || $a <=> $b} @input; |
637 | ok "@input", "I H G F E D C B A", 'revesed stable complex in place sort'; |
638 | |
639 | @input = &generate1; |
640 | $output = reverse sort {stuff || $a <=> $b} @input; |
641 | ok $output, "IHGFEDCBA", 'reversed stable complex sort in scalar context'; |
a1824f2a |
642 | |
643 | sub sortnumr { |
644 | reverse sort {$a <=> $b} @_; |
645 | } |
646 | |
647 | @output = sortnumr &generate1; |
648 | ok "@output", "I H G F E D C B A", |
649 | 'reversed stable $a <=> $b sort return list context'; |
650 | $output = sortnumr &generate1; |
c093edd0 |
651 | ok $output, "IHGFEDCBA", 'reversed stable $a <=> $b sort return scalar context'; |
a1824f2a |
652 | |
653 | sub sortnumrba { |
654 | reverse sort {$b <=> $a} @_; |
655 | } |
656 | |
657 | @output = sortnumrba &generate1; |
658 | ok "@output", "C B A F E D I H G", |
659 | 'reversed stable $b <=> $a sort return list context'; |
660 | $output = sortnumrba &generate1; |
c093edd0 |
661 | ok $output, "CBAFEDIHG", 'reversed stable $b <=> $a sort return scalar context'; |
7e7a548e |
662 | |
663 | sub sortnumrq { |
664 | reverse sort {stuff || $a <=> $b} @_; |
665 | } |
666 | |
667 | @output = sortnumrq &generate1; |
668 | ok "@output", "I H G F E D C B A", |
669 | 'reversed stable complex sort return list context'; |
670 | $output = sortnumrq &generate1; |
c093edd0 |
671 | ok $output, "IHGFEDCBA", 'reversed stable complex sort return scalar context'; |
672 | |
673 | @output = reverse (sort(qw(C A B)), 0); |
674 | ok "@output", "0 C B A", 'reversed sort with trailing argument'; |
675 | |
676 | @output = reverse (0, sort(qw(C A B))); |
677 | ok "@output", "C B A 0", 'reversed sort with leading argument'; |
9850bf21 |
678 | |
679 | eval { @output = sort {goto sub {}} 1,2; }; |
f34362ee |
680 | $fail_msg = q(Can't goto subroutine outside a subroutine); |
681 | main::cmp_ok(substr($@,0,length($fail_msg)),'eq',$fail_msg,'goto subr outside subr'); |
682 | |
683 | |
9850bf21 |
684 | |
685 | sub goto_sub {goto sub{}} |
686 | eval { @output = sort goto_sub 1,2; }; |
f34362ee |
687 | $fail_msg = q(Can't goto subroutine from a sort sub); |
688 | main::cmp_ok(substr($@,0,length($fail_msg)),'eq',$fail_msg,'goto subr from a sort sub'); |
689 | |
690 | |
9850bf21 |
691 | |
692 | eval { @output = sort {goto label} 1,2; }; |
f34362ee |
693 | $fail_msg = q(Can't "goto" out of a pseudo block); |
694 | main::cmp_ok(substr($@,0,length($fail_msg)),'eq',$fail_msg,'goto out of a pseudo block 1'); |
695 | |
696 | |
9850bf21 |
697 | |
698 | sub goto_label {goto label} |
699 | label: eval { @output = sort goto_label 1,2; }; |
f34362ee |
700 | $fail_msg = q(Can't "goto" out of a pseudo block); |
701 | main::cmp_ok(substr($@,0,length($fail_msg)),'eq',$fail_msg,'goto out of a pseudo block 2'); |
702 | |
703 | |
9850bf21 |
704 | |
705 | sub self_immolate {undef &self_immolate; $a<=>$b} |
706 | eval { @output = sort self_immolate 1,2,3 }; |
f34362ee |
707 | $fail_msg = q(Can't undef active subroutine); |
708 | main::cmp_ok(substr($@,0,length($fail_msg)),'eq',$fail_msg,'undef active subr'); |
709 | |
710 | |
9850bf21 |
711 | |
712 | { |
713 | my $failed = 0; |
714 | |
715 | sub rec { |
716 | my $n = shift; |
717 | if (!defined($n)) { # No arg means we're being called by sort() |
718 | return 1; |
719 | } |
720 | if ($n<5) { rec($n+1); } |
721 | else { () = sort rec 1,2; } |
722 | |
723 | $failed = 1 if !defined $n; |
724 | } |
725 | |
726 | rec(1); |
f34362ee |
727 | main::ok(!$failed, "sort from active sub"); |
9850bf21 |
728 | } |
729 | |
730 | # $a and $b are set in the package the sort() is called from, |
731 | # *not* the package the sort sub is in. This is longstanding |
732 | # de facto behaviour that shouldn't be broken. |
733 | package main; |
f34362ee |
734 | my $answer = "good"; |
9850bf21 |
735 | () = sort OtherPack::foo 1,2,3,4; |
736 | |
9da9462b |
737 | { |
738 | package OtherPack; |
739 | no warnings 'once'; |
740 | sub foo { |
f34362ee |
741 | $answer = "something was unexpectedly defined or undefined" if |
9da9462b |
742 | defined($a) || defined($b) || !defined($main::a) || !defined($main::b); |
743 | $main::a <=> $main::b; |
744 | } |
745 | } |
9850bf21 |
746 | |
f34362ee |
747 | main::cmp_ok($answer,'eq','good','sort subr called from other package'); |
9850bf21 |
748 | |
749 | |
750 | # Bug 36430 - sort called in package2 while a |
751 | # sort in package1 is active should set $package2::a/b. |
752 | |
f34362ee |
753 | $answer = "good"; |
9850bf21 |
754 | my @list = sort { A::min(@$a) <=> A::min(@$b) } |
755 | [3, 1, 5], [2, 4], [0]; |
756 | |
f34362ee |
757 | main::cmp_ok($answer,'eq','good','bug 36430'); |
9850bf21 |
758 | |
759 | package A; |
760 | sub min { |
761 | my @list = sort { |
f34362ee |
762 | $answer = '$a and/or $b are not defined ' if !defined($a) || !defined($b); |
9850bf21 |
763 | $a <=> $b; |
764 | } @_; |
765 | $list[0]; |
766 | } |
767 | |
768 | # Bug 7567 - an array shouldn't be modifiable while it's being |
769 | # sorted in-place. |
770 | eval { @a=(1..8); @a = sort { @a = (0) } @a; }; |
771 | |
f34362ee |
772 | $fail_msg = q(Modification of a read-only value attempted); |
773 | main::cmp_ok(substr($@,0,length($fail_msg)),'eq',$fail_msg,'bug 7567'); |
774 | |
775 | |
9850bf21 |
776 | |
777 | # Sorting shouldn't increase the refcount of a sub |
778 | sub foo {(1+$a) <=> (1+$b)} |
779 | my $refcnt = &Internals::SvREFCNT(\&foo); |
780 | @output = sort foo 3,7,9; |
781 | package Foo; |
782 | ok($refcnt, &Internals::SvREFCNT(\&foo), "sort sub refcnt"); |
f34362ee |
783 | $fail_msg = q(Modification of a read-only value attempted); |
9850bf21 |
784 | # Sorting a read-only array in-place shouldn't be allowed |
785 | my @readonly = (1..10); |
786 | Internals::SvREADONLY(@readonly, 1); |
787 | eval { @readonly = sort @readonly; }; |
f34362ee |
788 | main::cmp_ok(substr($@,0,length($fail_msg)),'eq',$fail_msg,'in-place sort of read-only array'); |
789 | |
790 | |
791 | |
9850bf21 |
792 | |
793 | # Using return() should be okay even in a deeper context |
794 | @b = sort {while (1) {return ($a <=> $b)} } 1..10; |
795 | ok("@b", "1 2 3 4 5 6 7 8 9 10", "return within loop"); |
d7507f74 |
796 | |
797 | # Using return() should be okay even if there are other items |
798 | # on the stack at the time. |
799 | @b = sort {$_ = ($a<=>$b) + do{return $b<=> $a}} 1..10; |
800 | ok("@b", "10 9 8 7 6 5 4 3 2 1", "return with SVs on stack"); |
801 | |
802 | # As above, but with a sort sub rather than a sort block. |
803 | sub ret_with_stacked { $_ = ($a<=>$b) + do {return $b <=> $a} } |
804 | @b = sort ret_with_stacked 1..10; |
805 | ok("@b", "10 9 8 7 6 5 4 3 2 1", "return with SVs on stack"); |