about summary refs log tree commit diff stats
path: root/edit/011-errors.mu
blob: 2764de7d850da6e3a30e5e5a107fdc1c59b3033f (plain) (blame)
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
## handling malformed programs

container environment [
  recipe-errors:text
]

# copy code from recipe editor, persist, load into mu, save any errors
def! update-recipes env:&:environment, screen:&:screen -> errors-found?:bool, env:&:environment, screen:&:screen [
  local-scope
  load-ingredients
  recipes:&:editor <- get *env, recipes:offset
  in:text <- editor-contents recipes
  save [recipes.mu], in
  recipe-errors:text <- reload in
  *env <- put *env, recipe-errors:offset, recipe-errors
  # if recipe editor has errors, stop
  {
    break-unless recipe-errors
    update-status screen, [errors found     ], 1/red
    errors-found? <- copy 1/true
    return
  }
  errors-found? <- copy 0/false
]

before <render-components-end> [
  trace 11, [app], [render status]
  recipe-errors:text <- get *env, recipe-errors:offset
  {
    break-unless recipe-errors
    update-status screen, [errors found     ], 1/red
  }
]

before <render-recipe-components-end> [
  {
    recipe-errors:text <- get *env, recipe-errors:offset
    break-unless recipe-errors
    row, screen <- render-text screen, recipe-errors, left, right, 1/red, row
  }
]

container environment [
  error-index:num  # index of first sandbox with an error (or -1 if none)
]

after <programming-environment-initialization> [
  *result <- put *result, error-index:offset, -1
]

after <run-sandboxes-begin> [
  *env <- put *env, error-index:offset, -1
]

before <run-sandboxes-end> [
  {
    error-index:num <- get *env, error-index:offset
    sandboxes-completed-successfully?:bool <- equal error-index, -1
    break-if sandboxes-completed-successfully?
    errors-found? <- copy 1/true
  }
]

before <render-components-end> [
  {
    break-if recipe-errors
    error-index:num <- get *env, error-index:offset
    sandboxes-completed-successfully?:bool <- equal error-index, -1
    break-if sandboxes-completed-successfully?
    error-index-text:text <- to-text error-index
    status:text <- interpolate [errors found (_)    ], error-index-text
    update-status screen, status, 1/red
  }
]

container sandbox [
  errors:text
]

def! update-sandbox sandbox:&:sandbox, env:&:environment, idx:num -> sandbox:&:sandbox, env:&:environment [
  local-scope
  load-ingredients
  data:text <- get *sandbox, data:offset
  response:text, errors:text, fake-screen:&:screen, trace:text, completed?:bool <- run-sandboxed data
  *sandbox <- put *sandbox, response:offset, response
  *sandbox <- put *sandbox, errors:offset, errors
  *sandbox <- put *sandbox, screen:offset, fake-screen
  *sandbox <- put *sandbox, trace:offset, trace
  {
    break-if errors
    break-if completed?:bool
    errors <- new [took too long!
]
    *sandbox <- put *sandbox, errors:offset, errors
  }
  {
    break-unless errors
    error-index:num <- get *env, error-index:offset
    error-not-set?:bool <- equal error-index, -1
    break-unless error-not-set?
    *env <- put *env, error-index:offset, idx
  }
]

# make sure we render any trace
after <render-sandbox-trace-done> [
  {
    sandbox-errors:text <- get *sandbox, errors:offset
    break-unless sandbox-errors
    *sandbox <- put *sandbox, response-starting-row-on-screen:offset, 0  # no response
    row, screen <- render-text screen, sandbox-errors, left, right, 1/red, row
    # don't try to print anything more for this sandbox
    jump +render-sandbox-end:label
  }
]

scenario run-shows-errors-in-get [
  trace-until 100/app  # trace too long
  assume-screen 100/width, 15/height
  1:text <- new [ 
recipe foo [
  get 123:num, foo:offset
]]
  2:text <- new [foo]
  3:&:environment <- new-programming-environment screen:&:screen, 1:text, 2:text
  assume-console [
    press F4
  ]
  run [
    event-loop screen:&:screen, console:&:console, 3:&:environment
  ]
  screen-should-contain [
    .  errors found                                                                   run (F4)           .
    .                                                  foo                                              .
    .recipe foo [                                      ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .  get 123:num, foo:offset                                                                          .
    .]                                                                                                  .
    .foo: unknown element 'foo' in container 'number'                                                   .
    .foo: first ingredient of 'get' should be a contai↩┊                                                 .
    .ner, but got '123:num'                                                                             .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊                                                 .
    .                                                                                                   .
  ]
  screen-should-contain-in-color 1/red, [
    .  errors found                                                                                      .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .foo: unknown element 'foo' in container 'number'                                                    .
    .foo: first ingredient of 'get' should be a contai                                                   .
    .ner, but got '123:num'                                                                              .
    .                                                                                                    .
  ]
]

scenario run-updates-status-with-first-erroneous-sandbox [
  trace-until 100/app  # trace too long
  assume-screen 100/width, 15/height
  1:text <- new []
  2:text <- new []
  3:&:environment <- new-programming-environment screen:&:screen, 1:text, 2:text
  assume-console [
    left-click 3, 80
    # create invalid sandbox 1
    type [get foo, x:offset]
    press F4
    # create invalid sandbox 0
    type [get foo, x:offset]
    press F4
  ]
  run [
    event-loop screen:&:screen, console:&:console, 3:&:environment
  ]
  # status line shows that error is in first sandbox
  screen-should-contain [
    .  errors found (0)                                                               run (F4)           .
  ]
]

scenario run-updates-status-with-first-erroneous-sandbox-2 [
  trace-until 100/app  # trace too long
  assume-screen 100/width, 15/height
  1:text <- new []
  2:text <- new []
  3:&:environment <- new-programming-environment screen:&:screen, 1:text, 2:text
  assume-console [
    left-click 3, 80
    # create invalid sandbox 2
    type [get foo, x:offset]
    press F4
    # create invalid sandbox 1
    type [get foo, x:offset]
    press F4
    # create valid sandbox 0
    type [add 2, 2]
    press F4
  ]
  run [
    event-loop screen:&:screen, console:&:console, 3:&:environment
  ]
  # status line shows that error is in second sandbox
  screen-should-contain [
    .  errors found (1)                                                               run (F4)           .
  ]
]

scenario run-hides-errors-from-past-sandboxes [
  trace-until 100/app  # trace too long
  assume-screen 100/width, 15/height
  1:text <- new []
  2:text <- new [get foo, x:offset]  # invalid
  3:&:environment <- new-programming-environment screen:&:screen, 1:text, 2:text
  assume-console [
    press F4  # generate error
  ]
  run [
    event-loop screen:&:screen, console:&:console, 3:&:environment
  ]
  assume-console [
    left-click 3, 58
    press ctrl-k
    type [add 2, 2]  # valid code
    press F4  # update sandbox
  ]
  run [
    event-loop screen:&:screen, console:&:console, 3:&:environment
  ]
  # error should disappear
  screen-should-contain [
    .                                                                                 run (F4)           .
    .                                                                                                   .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .                                                  0   edit          copy            delete         .
    .                                                  add 2, 2                                         .
    .                                                  4                                                .
    .                                                  ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .                                                                                                   .
  ]
]

scenario run-updates-errors-for-shape-shifting-recipes [
  trace-until 100/app  # trace too long
  assume-screen 100/width, 15/height
  # define a shape-shifting recipe with an error
  1:text <- new [recipe foo x:_elem -> z:_elem [
local-scope
load-ingredients
y:&:num <- copy 0
z <- add x, y
]]
  2:text <- new [foo 2]
  3:&:environment <- new-programming-environment screen:&:screen, 1:text, 2:text
  assume-console [
    press F4
  ]
  event-loop screen:&:screen, console:&:console, 3:&:environment
  screen-should-contain [
    .  errors found (0)                                                               run (F4)           .
    .recipe foo x:_elem -> z:_elem [                                                                    .
    .local-scope                                       ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .load-ingredients                                  0   edit          copy            delete         .
    .y:&:num <- copy 0                                 foo 2                                            .
    .z <- add x, y                                     foo_2: 'add' requires number ingredients, but go.
    .]                                                 t 'y'                                            .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .                                                                                                   .
  ]
  # now rerun everything
  assume-console [
    press F4
  ]
  run [
    event-loop screen:&:screen, console:&:console, 3:&:environment
  ]
  # error should remain unchanged
  screen-should-contain [
    .  errors found (0)                                                               run (F4)           .
    .recipe foo x:_elem -> z:_elem [                                                                    .
    .local-scope                                       ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .load-ingredients                                  0   edit          copy            delete         .
    .y:&:num <- copy 0                                 foo 2                                            .
    .z <- add x, y                                     foo_3: 'add' requires number ingredients, but go.
    .]                                                 t 'y'                                            .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .                                                                                                   .
  ]
]

scenario run-avoids-spurious-errors-on-reloading-shape-shifting-recipes [
  trace-until 100/app  # trace too long
  assume-screen 100/width, 15/height
  # overload a well-known shape-shifting recipe
  1:text <- new [recipe length l:&:list:_elem -> n:num [
]]
  # call code that uses other variants of it, but not it itself
  2:text <- new [x:&:list:num <- copy 0
to-text x]
  3:&:environment <- new-programming-environment screen:&:screen, 1:text, 2:text
  # run it once
  assume-console [
    press F4
  ]
  event-loop screen:&:screen, console:&:console, 3:&:environment
  # no errors anywhere on screen (can't check anything else, since to-text will return an address)
  screen-should-contain-in-color 1/red, [
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                <-                                  .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
  ]
  # rerun everything
  assume-console [
    press F4
  ]
  run [
    event-loop screen:&:screen, console:&:console, 3:&:environment
  ]
  # still no errors
  screen-should-contain-in-color 1/red, [
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                <-                                  .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
  ]
]

scenario run-shows-missing-type-errors [
  trace-until 100/app  # trace too long
  assume-screen 100/width, 15/height
  1:text <- new [ 
recipe foo [
  x <- copy 0
]]
  2:text <- new [foo]
  3:&:environment <- new-programming-environment screen:&:screen, 1:text, 2:text
  assume-console [
    press F4
  ]
  run [
    event-loop screen:&:screen, console:&:console, 3:&:environment
  ]
  screen-should-contain [
    .  errors found                                                                   run (F4)           .
    .                                                  foo                                              .
    .recipe foo [                                      ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .  x <- copy 0                                                                                      .
    .]                                                                                                  .
    .foo: missing type for 'x' in 'x <- copy 0'                                                         .
  ]
]

scenario run-shows-unbalanced-bracket-errors [
  trace-until 100/app  # trace too long
  assume-screen 100/width, 15/height
  # recipe is incomplete (unbalanced '[')
  1:text <- new [ 
recipe foo \\[
  x <- copy 0
]
  2:text <- new [foo]
  3:&:environment <- new-programming-environment screen:&:screen, 1:text, 2:text
  assume-console [
    press F4
  ]
  run [
    event-loop screen:&:screen, console:&:console, 3:&:environment
  ]
  screen-should-contain [
    .  errors found                                                                   run (F4)           .
    .                                                  foo                                              .
    .recipe foo \\[                                      ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .  x <- copy 0                                                                                      .
    .                                                                                                   .
    .9: unbalanced '\\[' for recipe                                                                       .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊                                                 .
    .                                                                                                   .
  ]
]

scenario run-shows-get-on-non-container-errors [
  trace-until 100/app  # trace too long
  assume-screen 100/width, 15/height
  1:text <- new [ 
recipe foo [
  local-scope
  x:&:point <- new point:type
  get x:&:point, 1:offset
]]
  2:text <- new [foo]
  3:&:environment <- new-programming-environment screen:&:screen, 1:text, 2:text
  assume-console [
    press F4
  ]
  run [
    event-loop screen:&:screen, console:&:console, 3:&:environment
  ]
  screen-should-contain [
    .  errors found                                                                   run (F4)           .
    .                                                  foo                                              .
    .recipe foo [                                      ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .  local-scope                                                                                      .
    .  x:&:point <- new point:type                                                                      .
    .  get x:&:point, 1:offset                                                                          .
    .]                                                                                                  .
    .foo: first ingredient of 'get' should be a contai↩┊                                                 .
    .ner, but got 'x:&:point'                                                                           .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊                                                 .
    .                                                                                                   .
  ]
]

scenario run-shows-non-literal-get-argument-errors [
  trace-until 100/app  # trace too long
  assume-screen 100/width, 15/height
  1:text <- new [ 
recipe foo [
  local-scope
  x:num <- copy 0
  y:&:point <- new point:type
  get *y:&:point, x:num
]]
  2:text <- new [foo]
  3:&:environment <- new-programming-environment screen:&:screen, 1:text, 2:text
  assume-console [
    press F4
  ]
  run [
    event-loop screen:&:screen, console:&:console, 3:&:environment
  ]
  screen-should-contain [
    .  errors found                                                                   run (F4)           .
    .                                                  foo                                              .
    .recipe foo [                                      ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .  local-scope                                                                                      .
    .  x:num <- copy 0                                                                                  .
    .  y:&:point <- new point:type                                                                      .
    .  get *y:&:point, x:num                                                                            .
    .]                                                                                                  .
    .foo: second ingredient of 'get' should have type ↩┊                                                 .
    .'offset', but got 'x:num'                                                                          .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊                                                 .
    .                                                                                                   .
  ]
]

scenario run-shows-errors-everytime [
  trace-until 100/app  # trace too long
  # try to run a file with an error
  assume-screen 100/width, 15/height
  1:text <- new [ 
recipe foo [
  local-scope
  x:num <- copy y:num
]]
  2:text <- new [foo]
  3:&:environment <- new-programming-environment screen:&:screen, 1:text, 2:text
  assume-console [
    press F4
  ]
  event-loop screen:&:screen, console:&:console, 3:&:environment
  screen-should-contain [
    .  errors found                                                                   run (F4)           .
    .                                                  foo                                              .
    .recipe foo [                                      ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .  local-scope                                                                                      .
    .  x:num <- copy y:num                                                                              .
    .]                                                                                                  .
    .foo: use before set: 'y'                                                                           .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊                                                 .
    .                                                                                                   .
  ]
  # rerun the file, check for the same error
  assume-console [
    press F4
  ]
  run [
    event-loop screen:&:screen, console:&:console, 3:&:environment
  ]
  screen-should-contain [
    .  errors found                                                                   run (F4)           .
    .                                                  foo                                              .
    .recipe foo [                                      ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .  local-scope                                                                                      .
    .  x:num <- copy y:num                                                                              .
    .]                                                                                                  .
    .foo: use before set: 'y'                                                                           .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊                                                 .
    .                                                                                                   .
  ]
]

scenario run-instruction-and-print-errors [
  trace-until 100/app  # trace too long
  assume-screen 100/width, 10/height
  # left editor is empty
  1:text <- new []
  # right editor contains an illegal instruction
  2:text <- new [get 1234:num, foo:offset]
  3:&:environment <- new-programming-environment screen:&:screen, 1:text, 2:text
  # run the code in the editors
  assume-console [
    press F4
  ]
  run [
    event-loop screen:&:screen, console:&:console, 3:&:environment
  ]
  # check that screen prints error message in red
  screen-should-contain [
    .  errors found (0)                                                               run (F4)           .
    .                                                                                                   .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .                                                  0   edit          copy            delete         .
    .                                                  get 1234:num, foo:offset                         .
    .                                                  unknown element 'foo' in container 'number'      .
    .                                                  first ingredient of 'get' should be a container,.
    .                                                   but got '1234:num'                              .
    .                                                  ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .                                                                                                   .
  ]
  screen-should-contain-in-color 7/white, [
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                   get 1234:num, foo:offset                         .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
  ]
  screen-should-contain-in-color 1/red, [
    .  errors found (0)                                                                                  .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                                                                    .
    .                                                   unknown element 'foo' in container 'number'      .
    .                                                   first ingredient of 'get' should be a container, .
    .                                                    but got '1234:num'                              .
    .                                                                                                    .
  ]
  screen-should-contain-in-color 245/grey, [
    .                                                                                                    .
    .                                                                                                   .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .                                                                                                   .
    .                                                                                                   .
    .                                                                                                   .
    .                                                                                                  .
    .                                                                                                   .
    .                                                  ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .                                                                                                   .
  ]
]

scenario run-instruction-and-print-errors-only-once [
  trace-until 100/app  # trace too long
  assume-screen 100/width, 10/height
  # left editor is empty
  1:text <- new []
  # right editor contains an illegal instruction
  2:text <- new [get 1234:num, foo:offset]
  3:&:environment <- new-programming-environment screen:&:screen, 1:text, 2:text
  # run the code in the editors multiple times
  assume-console [
    press F4
    press F4
  ]
  run [
    event-loop screen:&:screen, console:&:console, 3:&:environment
  ]
  # check that screen prints error message just once
  screen-should-contain [
    .  errors found (0)                                                               run (F4)           .
    .                                                                                                   .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .                                                  0   edit          copy            delete         .
    .                                                  get 1234:num, foo:offset                         .
    .                                                  unknown element 'foo' in container 'number'      .
    .                                                  first ingredient of 'get' should be a container,.
    .                                                   but got '1234:num'                              .
    .                                                  ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .                                                                                                   .
  ]
]

scenario sandbox-can-handle-infinite-loop [
  trace-until 100/app  # trace too long
  assume-screen 100/width, 20/height
  # left editor is empty
  1:text <- new [recipe foo [
  {
    loop
  }
]]
  # right editor contains an instruction
  2:text <- new [foo]
  3:&:environment <- new-programming-environment screen:&:screen, 1:text, 2:text
  # run the sandbox
  assume-console [
    press F4
  ]
  run [
    event-loop screen:&:screen, console:&:console, 3:&:environment
  ]
  screen-should-contain [
    .  errors found (0)                                                               run (F4)           .
    .recipe foo [                                                                                       .
    .  {                                               ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .    loop                                          0   edit          copy            delete         .
    .  }                                               foo                                              .
    .]                                                 took too long!                                   .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .                                                                                                   .
  ]
]

scenario sandbox-with-errors-shows-trace [
  trace-until 100/app  # trace too long
  assume-screen 100/width, 10/height
  # generate a stash and a error
  1:text <- new [recipe foo [
local-scope
a:num <- next-ingredient
b:num <- next-ingredient
stash [dividing by], b
_, c:num <- divide-with-remainder a, b
reply b
]]
  2:text <- new [foo 4, 0]
  3:&:environment <- new-programming-environment screen:&:screen, 1:text, 2:text
  # run
  assume-console [
    press F4
  ]
  event-loop screen:&:screen, console:&:console, 3:&:environment
  # screen prints error message
  screen-should-contain [
    .  errors found (0)                                                               run (F4)           .
    .recipe foo [                                                                                       .
    .local-scope                                       ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .a:num <- next-ingredient                          0   edit          copy            delete         .
    .b:num <- next-ingredient                          foo 4, 0                                         .
    .stash [dividing by], b                            foo: divide by zero in '_, c:num <- divide-with-.
    ._, c:num <- divide-with-remainder a, b            remainder a, b'                                  .
    .reply b                                           ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .]                                                                                                  .
  ]
  # click on the call in the sandbox
  assume-console [
    left-click 4, 55
  ]
  run [
    event-loop screen:&:screen, console:&:console, 3:&:environment
  ]
  # screen should expand trace
  screen-should-contain [
    .  errors found (0)                                                               run (F4)           .
    .recipe foo [                                                                                       .
    .local-scope                                       ┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
    .a:num <- next-ingredient                          0   edit          copy            delete         .
    .b:num <- next-ingredient                          foo 4, 0                                         .
    .stash [dividing by], b                            dividing by 0                                    .
    ._, c:num <- divide-with-remainder a, b            14 instructions run                              .
    .reply b                                           foo: divide by zero in '_, c:num <- divide-with-.
    .]                                                 remainder a, b'                                  .
    .┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┊━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━.
  ]
]