summaryrefslogtreecommitdiffstats
path: root/tcl8.6/tests/coroutine.test
blob: 205da67def48d76d4f4db75f4a54da5acf5714f6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
# Commands covered:  coroutine, yield, yieldto, [info coroutine]
#
# This file contains a collection of tests for experimental commands that are
# found in ::tcl::unsupported. The tests will migrate to normal test files
# if/when the commands find their way into the core.
#
# Copyright (c) 2008 by Miguel Sofer.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.

if {[lsearch [namespace children] ::tcltest] == -1} {
    package require tcltest
    namespace import -force ::tcltest::*
}

::tcltest::loadTestedCommands
catch [list package require -exact Tcltest [info patchlevel]]

testConstraint testnrelevels [llength [info commands testnrelevels]]
testConstraint memory [llength [info commands memory]]

set lambda [list {{start 0} {stop 10}} {
    # init
    set i    $start
    set imax $stop
    yield
    while {$i < $imax} {
	yield [expr {$i*$stop}]
	incr i
    }
}]

test coroutine-1.1 {coroutine basic} -setup {
    coroutine foo ::apply $lambda
    set res {}
} -body {
    for {set k 1} {$k < 4} {incr k} {
	lappend res [foo]
    }
    set res
} -cleanup {
    rename foo {}
    unset res
} -result {0 10 20}
test coroutine-1.2 {coroutine basic} -setup {
    coroutine foo ::apply $lambda 2 8
    set res {}
} -body {
    for {set k 1} {$k < 4} {incr k} {
	lappend res [foo]
    }
    set res
} -cleanup {
    rename foo {}
    unset res
} -result {16 24 32}
test coroutine-1.3 {yield returns new arg} -setup {
    set body {
	# init
	set i    $start
	set imax $stop
	yield
	while {$i < $imax} {
	    set stop [yield [expr {$i*$stop}]]
	    incr i
	}
    }
    coroutine foo ::apply [list {{start 2} {stop 10}} $body] 
    set res {}
} -body {
    for {set k 1} {$k < 4} {incr k} {
	lappend res [foo $k]
    }
    set res
} -cleanup {
    rename foo {}
    unset res
} -result {20 6 12}
test coroutine-1.4 {yield in nested proc} -setup {
    proc moo {} {
	upvar 1 i i stop stop
	yield [expr {$i*$stop}]
    }
    set body {
	# init
	set i    $start
	set imax $stop
	yield
	while {$i < $imax} {
	    moo
	    incr i
	}
    }
    coroutine foo ::apply [list {{start 0} {stop 10}} $body]
    set res {}
} -body {
    for {set k 1} {$k < 4} {incr k} {
	lappend res [foo $k]
    }
    set res
} -cleanup {
    rename foo {}
    rename moo {}
    unset body res
} -result {0 10 20}
test coroutine-1.5 {just yield} -body {
    coroutine foo yield
    list [foo] [catch foo msg] $msg
} -cleanup {
    unset msg
} -result {{} 1 {invalid command name "foo"}}
test coroutine-1.6 {just yield} -body {
    coroutine foo [list yield]
    list [foo] [catch foo msg] $msg
} -cleanup {
    unset msg
} -result {{} 1 {invalid command name "foo"}}
test coroutine-1.7 {yield in nested uplevel} -setup {
    set body {
	# init
	set i    $start
	set imax $stop
	yield
	while {$i < $imax} {
	    uplevel 0 [list yield [expr {$i*$stop}]]
	    incr i
	}
    }
    coroutine foo ::apply [list {{start 0} {stop 10}} $body]
    set res {}
} -body {
    for {set k 1} {$k < 4} {incr k} {
	lappend res [eval foo $k]
    }
    set res
} -cleanup {
    rename foo {}
    unset body res
} -result {0 10 20}
test coroutine-1.8 {yield in nested uplevel} -setup {
    set body {
	# init
	set i    $start
	set imax $stop
	yield
	while {$i < $imax} {
	    uplevel 0 yield [expr {$i*$stop}]
	    incr i
	}
    }
    coroutine foo ::apply [list {{start 0} {stop 10}} $body]
    set res {}
} -body {
    for {set k 1} {$k < 4} {incr k} {
	lappend res [eval foo $k]
    }
    set res
} -cleanup {
    rename foo {}
    unset body res
} -result {0 10 20}
test coroutine-1.9 {yield in nested eval} -setup {
    proc moo {} {
	upvar 1 i i stop stop
	yield [expr {$i*$stop}]
    }
    set body {
	# init
	set i    $start
	set imax $stop
	yield
	while {$i < $imax} {
	    eval moo
	    incr i
	}
    }
    coroutine foo ::apply [list {{start 0} {stop 10}} $body]
    set res {}
} -body {
    for {set k 1} {$k < 4} {incr k} {
	lappend res [foo $k]
    }
    set res
} -cleanup {
    rename moo {}
    unset body res
} -result {0 10 20}
test coroutine-1.10 {yield in nested eval} -setup {
    set body {
	# init
	set i    $start
	set imax $stop
	yield
	while {$i < $imax} {
	    eval yield [expr {$i*$stop}]
	    incr i
	}
    }
    coroutine foo ::apply [list {{start 0} {stop 10}} $body]
    set res {}
} -body {
    for {set k 1} {$k < 4} {incr k} {
	lappend res [eval foo $k]
    }
    set res
} -cleanup {
    unset body res
} -result {0 10 20}
test coroutine-1.11 {yield outside coroutine} -setup {
    proc moo {} {
	upvar 1 i i stop stop
	yield [expr {$i*$stop}]
    }
} -body {
    variable i 5 stop 6
    moo
} -cleanup {
    rename moo {}
    unset i stop
} -returnCodes error -result {yield can only be called in a coroutine}
test coroutine-1.12 {proc as coroutine} -setup {
    set body {
	# init
	set i    $start
	set imax $stop
	yield
	while {$i < $imax} {
	    uplevel 0 [list yield [expr {$i*$stop}]]
	    incr i
	}
    }
    proc moo {{start 0} {stop 10}} $body
    coroutine foo moo 2 8
} -body {
    list [foo] [foo]
} -cleanup {
    unset body
    rename moo {}
    rename foo {}
} -result {16 24}
test coroutine-1.13 {subst as coroutine: literal} {
    list [coroutine foo eval {subst {>>[yield a],[yield b]<<}}] [foo x] [foo y]
} {a b >>x,y<<}
test coroutine-1.14 {subst as coroutine: in variable} {
    set pattern {>>[yield c],[yield d]<<}
    list [coroutine foo eval {subst $pattern}] [foo p] [foo q]
} {c d >>p,q<<}

test coroutine-2.1 {self deletion on return} -body {
    coroutine foo set x 3
    foo
} -returnCodes error -result {invalid command name "foo"}
test coroutine-2.2 {self deletion on return} -body {
    coroutine foo ::apply [list {} {yield; yield 1; return 2}]
    list [foo] [foo] [catch foo msg] $msg
} -result {1 2 1 {invalid command name "foo"}}
test coroutine-2.3 {self deletion on error return} -body {
    coroutine foo ::apply [list {} {yield;yield 1; error ouch!}]
    list [foo] [catch foo msg] $msg [catch foo msg] $msg
} -result {1 1 ouch! 1 {invalid command name "foo"}}
test coroutine-2.4 {self deletion on other return} -body {
    coroutine foo ::apply [list {} {yield;yield 1; return -code 100 ouch!}]
    list [foo] [catch foo msg] $msg [catch foo msg] $msg
} -result {1 100 ouch! 1 {invalid command name "foo"}}
test coroutine-2.5 {deletion of suspended coroutine} -body {
    coroutine foo ::apply [list {} {yield; yield 1; return 2}]
    list [foo] [rename foo {}] [catch foo msg] $msg
} -result {1 {} 1 {invalid command name "foo"}}
test coroutine-2.6 {deletion of running coroutine} -body {
    coroutine foo ::apply [list {} {yield; rename foo {}; yield 1; return 2}]
    list [foo] [catch foo msg] $msg
} -result {1 1 {invalid command name "foo"}}

test coroutine-3.1 {info level computation} -setup {
    proc a {} {while 1 {yield [info level]}}
    proc b {} foo
} -body {
    # note that coroutines execute in uplevel #0
    set l0 [coroutine foo a]
    set l1 [foo]
    set l2 [b]
    list $l0 $l1 $l2
} -cleanup {
    rename a {}
    rename b {}
} -result {1 1 1}
test coroutine-3.2 {info frame computation} -setup {
    proc a {} {while 1 {yield [info frame]}}
    proc b {} foo
} -body {
    set l0 [coroutine foo a]
    set l1 [foo]
    set l2 [b]
    expr {$l2 - $l1}
} -cleanup {
    rename a {}
    rename b {}
} -result 1
test coroutine-3.3 {info coroutine} -setup {
    proc a {} {info coroutine}
    proc b {} a
} -body {
    b
} -cleanup {
    rename a {}
    rename b {}
} -result {}
test coroutine-3.4 {info coroutine} -setup {
    proc a {} {info coroutine}
    proc b {} a
} -body {
    coroutine foo b
} -cleanup {
    rename a {}
    rename b {}
} -result ::foo
test coroutine-3.5 {info coroutine} -setup {
    proc a {} {info coroutine}
    proc b {} {rename [info coroutine] {}; a}
} -body {
    coroutine foo b
} -cleanup {
    rename a {}
    rename b {}
} -result {}
test coroutine-3.6 {info frame, bug #2910094} -setup {
    proc stack {} {
	set res [list "LEVEL:[set lev [info frame]]"]
	for {set i 1} {$i < $lev} {incr i} {
	    lappend res [info frame $i]
	}
	set res
	# the precise command depends on line numbers and such, is likely not
	# to be stable: just check that the test completes!
	return
    }
    proc a {} stack
} -body {
    coroutine aa a
} -cleanup {
    rename stack {}
    rename a {}
} -result {}
test coroutine-3.7 {bug 0b874c344d} {
    dict get [coroutine X coroutine Y info frame 0] cmd
} {coroutine X coroutine Y info frame 0}

test coroutine-4.1 {bug #2093188} -setup {
    proc foo {} {
	set v 1
	trace add variable v {write unset} bar
	yield
	set v 2
	yield
	set v 3
    }
    proc bar args {lappend ::res $args}
    coroutine a foo
} -body {
    list [a] [a] $::res
} -cleanup {
    rename foo {}
    rename bar {}
    unset ::res
} -result {{} 3 {{v {} write} {v {} write} {v {} unset}}}
test coroutine-4.2 {bug #2093188} -setup {
    proc foo {} {
	set v 1
	trace add variable v {read unset} bar
	yield
	set v 2
	set v
	yield
	set v 3
    }
    proc bar args {lappend ::res $args}
    coroutine a foo
} -body {
    list [a] [a] $::res
} -cleanup {
    rename foo {}
    rename bar {}
    unset ::res
} -result {{} 3 {{v {} read} {v {} unset}}}

test coroutine-4.3 {bug #2093947} -setup {
    proc foo {} {
	set v 1
	trace add variable v {write unset} bar
	yield
	set v 2
	yield
	set v 3
    }
    proc bar args {lappend ::res $args}
} -body {
    coroutine a foo
    a
    a
    coroutine a foo
    a
    rename a {}
    set ::res
} -cleanup {
    rename foo {}
    rename bar {}
    unset ::res
} -result {{v {} write} {v {} write} {v {} unset} {v {} write} {v {} unset}}

test coroutine-4.4 {bug #2917627: cmd resolution} -setup {
    proc a {} {return global}
    namespace eval b {proc a {} {return local}}
} -body {
    namespace eval b {coroutine foo a}
} -cleanup {
    rename a {}
    namespace delete b
} -result local

test coroutine-4.5 {bug #2724403} -constraints {memory} \
-setup {
    proc getbytes {} {
	set lines [split [memory info] "\n"]
	lindex $lines 3 3
    }
} -body {
    set end [getbytes]
    for {set i 0} {$i < 5} {incr i} {
	set ns ::y$i
	namespace eval $ns {}
	proc ${ns}::start {} {yield; puts hello}
	coroutine ${ns}::run ${ns}::start
	namespace delete $ns
	set start $end
	set end [getbytes]
    }
    set leakedBytes [expr {$end - $start}]
} -cleanup {
    rename getbytes {}
    unset i ns start end
} -result 0

test coroutine-4.6 {compile context, bug #3282869} -setup {
    unset -nocomplain ::x
    proc f x {
	coroutine D eval {yield X$x;yield Y}
    }
} -body {
    f 12
} -cleanup {
    rename f {}
} -returnCodes error -match glob -result {can't read *}

test coroutine-4.7 {compile context, bug #3282869} -setup {
    proc f x {
	coroutine D eval {yield X$x;yield Y$x}
    }
} -body {
    set ::x 15
    set ::x [f 12]
    D
} -cleanup {
    D
    unset ::x
    rename f {}
} -result YX15

test coroutine-5.1 {right numLevels on coro return} -constraints {testnrelevels} \
-setup {
    proc nestedYield {{val {}}} {
	yield $val
    }
    proc getNumLevel {} {
	# remove the level for this proc's call
	expr {[lindex [testnrelevels] 1] - 1}
    }
    proc relativeLevel base {
	# remove the level for this proc's call	
	expr {[getNumLevel] - $base - 1}
    }
    proc foo {} {
	while 1 {
	    nestedYield
	}
    }
    set res {}
} -body {
    set base [getNumLevel]
    lappend res [relativeLevel $base]
    eval {coroutine a foo}
    # back to base level
    lappend res [relativeLevel $base]
    a
    lappend res [relativeLevel $base]
    eval a
    lappend res [relativeLevel $base]
    eval {eval a}
    lappend res [relativeLevel $base]
    rename a {}
    lappend res [relativeLevel $base]
    set res
} -cleanup {
    rename foo {}
    rename nestedYield {}
    rename getNumLevel {}
    rename relativeLevel {}
    unset res
} -result {0 0 0 0 0 0}
test coroutine-5.2 {right numLevels within coro} -constraints {testnrelevels} \
-setup {
    proc nestedYield {{val {}}} {
	yield $val
    }
    proc getNumLevel {} {
	# remove the level for this proc's call
	expr {[lindex [testnrelevels] 1] - 1}
    }
    proc relativeLevel base {
	# remove the level for this proc's call	
	expr {[getNumLevel] - $base - 1}
    }
    proc foo base {
	while 1 {
	    set base [nestedYield [relativeLevel $base]]
	}
    }
    set res {}
} -body {
    lappend res [eval {coroutine a foo [getNumLevel]}]
    lappend res [a [getNumLevel]]
    lappend res [eval {a [getNumLevel]}]
    lappend res [eval {eval {a [getNumLevel]}}]
    set base [lindex $res 0]
    foreach x $res[set res {}] {
	lappend res [expr {$x-$base}]
    }
    set res
} -cleanup {
    rename a {}
    rename foo {}
    rename nestedYield {}
    rename getNumLevel {}
    rename relativeLevel {}
    unset res
} -result {0 0 0 0}

test coroutine-6.1 {coroutine nargs} -body {
    coroutine a ::apply $lambda
    a
} -cleanup {
    rename a {}
} -result 0
test coroutine-6.2 {coroutine nargs} -body {
    coroutine a ::apply $lambda
    a a
} -cleanup {
    rename a {}
} -result 0
test coroutine-6.3 {coroutine nargs} -body {
    coroutine a ::apply $lambda
    a a a
} -cleanup {
    rename a {}
} -returnCodes error -result {wrong # args: should be "a ?arg?"}

test coroutine-7.1 {yieldto} -body {
    coroutine c apply {{} {
	yield
	yieldto return -level 0 -code 1 quux
	return quuy
    }}
    set res [list [catch c msg] $msg]
    lappend res [catch c msg] $msg
    lappend res [catch c msg] $msg
} -cleanup {
    unset res
} -result [list 1 quux 0 quuy 1 {invalid command name "c"}]
test coroutine-7.2 {multi-argument yielding with yieldto} -body {
    proc corobody {} {
	set a 1
	while 1 {
	    set a [yield $a]
	    set a [yieldto return -level 0 $a]
	    lappend a [llength $a]
	}
    }
    coroutine a corobody
    coroutine b corobody
    list [a x] [a y z] [a \{p] [a \{q r] [a] [a] [rename a {}] \
	[b ok] [rename b {}] 
} -cleanup {
    rename corobody {}
} -result {x {y z 2} \{p {\{q r 2} {} 0 {} ok {}}
test coroutine-7.3 {yielding between coroutines} -body {
    proc juggler {target {value ""}} {
	if {$value eq ""} {
	    set value [yield [info coroutine]]
	}
	while {[llength $value]} {
	    lappend ::result $value [info coroutine]
	    set value [lrange $value 0 end-1]
	    lassign [yieldto $target $value] value
	}
	# Clear nested collection of coroutines
	catch $target
    }
    set result ""
    coroutine j1 juggler [coroutine j2 juggler [coroutine j3 juggler j1]]\
	{a b c d e}
    list $result [info command j1] [info command j2] [info command j3]
} -cleanup {
    catch {rename juggler ""}
} -result {{{a b c d e} ::j1 {a b c d} ::j2 {a b c} ::j3 {a b} ::j1 a ::j2} {} {} {}}
test coroutine-7.4 {Bug 8ff0cb9fe1} -setup {
    proc foo {a b} {catch yield; return 1}
} -cleanup {
    rename foo {}
} -body {
    coroutine demo lsort -command foo {a b}
} -result {b a}
test coroutine-7.5 {return codes} {
    set result {}
    foreach code {0 1 2 3 4 5} {
	lappend result [catch {coroutine demo return -level 0 -code $code}]
    }
    set result
} {0 1 2 3 4 5}
test coroutine-7.6 {Early yield crashes} {
    proc foo args {}
    trace add execution foo enter {catch yield}
    coroutine demo foo
    rename foo {}
} {}
test coroutine-7.7 {Bug 2486550} -setup {
    interp hide {} yield
} -body {
    coroutine demo interp invokehidden {} yield ok
} -cleanup {
    demo
    interp expose {} yield
} -result ok
test coroutine-7.8 {yieldto context nuke: Bug a90d9331bc} -setup {
    namespace eval cotest {}
    set ::result ""
} -body {
    proc cotest::body {} {
	lappend ::result a
	yield OUT
	lappend ::result b
	yieldto ::return -level 0 123
	lappend ::result c
	return
    }
    lappend ::result [coroutine cotest cotest::body]
    namespace delete cotest
    namespace eval cotest {}
    lappend ::result [cotest]
    cotest
    return $result
} -returnCodes error -cleanup {
    catch {namespace delete ::cotest}
    catch {rename cotest ""}
} -result {yieldto called in deleted namespace}
test coroutine-7.9 {yieldto context nuke: Bug a90d9331bc} -setup {
    namespace eval cotest {}
    set ::result ""
} -body {
    proc cotest::body {} {
	set y ::yieldto
	lappend ::result a
	yield OUT
	lappend ::result b
	$y ::return -level 0 123
	lappend ::result c
	return
    }
    lappend ::result [coroutine cotest cotest::body]
    namespace delete cotest
    namespace eval cotest {}
    lappend ::result [cotest]
    cotest
    return $result
} -returnCodes error -cleanup {
    catch {namespace delete ::cotest}
    catch {rename cotest ""}
} -result {yieldto called in deleted namespace}
test coroutine-7.10 {yieldto context nuke: Bug a90d9331bc} -setup {
    namespace eval cotest {}
    set ::result ""
} -body {
    proc cotest::body {} {
	lappend ::result a
	yield OUT
	lappend ::result b
	yieldto ::return -level 0 -cotest [namespace delete ::cotest] 123
	lappend ::result c
	return
    }
    lappend ::result [coroutine cotest cotest::body]
    lappend ::result [cotest]
    cotest
    return $result
} -returnCodes error -cleanup {
    catch {namespace delete ::cotest}
    catch {rename cotest ""}
} -result {yieldto called in deleted namespace}
test coroutine-7.11 {yieldto context nuke: Bug a90d9331bc} -setup {
    namespace eval cotest {}
    set ::result ""
} -body {
    proc cotest::body {} {
	set y ::yieldto
	lappend ::result a
	yield OUT
	lappend ::result b
	$y ::return -level 0 -cotest [namespace delete ::cotest] 123
	lappend ::result c
	return
    }
    lappend ::result [coroutine cotest cotest::body]
    lappend ::result [cotest]
    cotest
    return $result
} -returnCodes error -cleanup {
    catch {namespace delete ::cotest}
    catch {rename cotest ""}
} -result {yieldto called in deleted namespace}
test coroutine-7.12 {coro floor above street level #3008307} -body {
    proc c {} {
	yield
    }
    proc cc {} {
	coroutine C c
    }
    proc boom {} {
	cc ; # coro created at level 2
	C  ; # and called at level 1
    }
    boom   ; # does not crash: the coro floor is a good insulator
    list
} -result {}


# cleanup
unset lambda
::tcltest::cleanupTests

return

# Local Variables:
# mode: tcl
# End: