-
Notifications
You must be signed in to change notification settings - Fork 456
Expand file tree
/
Copy pathobligation_property_test.go
More file actions
873 lines (789 loc) · 25.1 KB
/
Copy pathobligation_property_test.go
File metadata and controls
873 lines (789 loc) · 25.1 KB
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
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
package jsonparser
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"math"
"strings"
"testing"
)
// =============================================================================
// Determinism tests
// =============================================================================
// Verifies: SYS-REQ-086
// MCDC SYS-REQ-086: get_called_twice_with_same_input=T, get_returns_identical_results=T => TRUE
func TestGetDeterminism(t *testing.T) {
cases := []struct {
name string
data string
keys []string
}{
{name: "simple string", data: `{"name":"alice"}`, keys: []string{"name"}},
{name: "nested object", data: `{"a":{"b":{"c":42}}}`, keys: []string{"a", "b", "c"}},
{name: "array index", data: `{"arr":[10,20,30]}`, keys: []string{"arr", "[1]"}},
{name: "missing key", data: `{"a":1}`, keys: []string{"b"}},
{name: "empty object", data: `{}`, keys: []string{"x"}},
{name: "root value no keys", data: `{"a":1}`, keys: nil},
{name: "boolean value", data: `{"ok":true}`, keys: []string{"ok"}},
{name: "null value", data: `{"x":null}`, keys: []string{"x"}},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
data := []byte(tc.data)
v1, dt1, off1, err1 := Get(data, tc.keys...)
v2, dt2, off2, err2 := Get(data, tc.keys...)
if !bytes.Equal(v1, v2) {
t.Fatalf("Get value mismatch: %q vs %q", v1, v2)
}
if dt1 != dt2 {
t.Fatalf("Get type mismatch: %v vs %v", dt1, dt2)
}
if off1 != off2 {
t.Fatalf("Get offset mismatch: %d vs %d", off1, off2)
}
if (err1 == nil) != (err2 == nil) {
t.Fatalf("Get error mismatch: %v vs %v", err1, err2)
}
})
}
}
// Verifies: SYS-REQ-090
// MCDC SYS-REQ-090: getstring_called_twice_with_same_input=T, getstring_returns_identical_results=T => TRUE
func TestGetStringDeterminism(t *testing.T) {
cases := []struct {
name string
data string
keys []string
}{
{name: "simple", data: `{"s":"hello"}`, keys: []string{"s"}},
{name: "escaped", data: `{"s":"hello\nworld"}`, keys: []string{"s"}},
{name: "unicode", data: `{"s":"\u00e9"}`, keys: []string{"s"}},
{name: "missing", data: `{"a":1}`, keys: []string{"s"}},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
data := []byte(tc.data)
v1, err1 := GetString(data, tc.keys...)
v2, err2 := GetString(data, tc.keys...)
if v1 != v2 {
t.Fatalf("GetString value mismatch: %q vs %q", v1, v2)
}
if (err1 == nil) != (err2 == nil) {
t.Fatalf("GetString error mismatch: %v vs %v", err1, err2)
}
})
}
}
// Verifies: SYS-REQ-094
// MCDC SYS-REQ-094: typed_getter_called_twice_with_same_input=T, typed_getter_returns_identical_results=T => TRUE
func TestTypedGetterDeterminism(t *testing.T) {
data := []byte(`{"i":42,"f":3.14,"b":true}`)
// GetInt
i1, ie1 := GetInt(data, "i")
i2, ie2 := GetInt(data, "i")
if i1 != i2 || (ie1 == nil) != (ie2 == nil) {
t.Fatalf("GetInt not deterministic: (%d,%v) vs (%d,%v)", i1, ie1, i2, ie2)
}
// GetFloat
f1, fe1 := GetFloat(data, "f")
f2, fe2 := GetFloat(data, "f")
if f1 != f2 || (fe1 == nil) != (fe2 == nil) {
t.Fatalf("GetFloat not deterministic: (%f,%v) vs (%f,%v)", f1, fe1, f2, fe2)
}
// GetBoolean
b1, be1 := GetBoolean(data, "b")
b2, be2 := GetBoolean(data, "b")
if b1 != b2 || (be1 == nil) != (be2 == nil) {
t.Fatalf("GetBoolean not deterministic: (%v,%v) vs (%v,%v)", b1, be1, b2, be2)
}
}
// Verifies: SYS-REQ-097
// MCDC SYS-REQ-097: traversal_called_twice_with_same_input=T, traversal_returns_identical_results=T => TRUE
func TestTraversalDeterminism(t *testing.T) {
t.Run("ArrayEach", func(t *testing.T) {
data := []byte(`{"arr":[1,2,3]}`)
var vals1, vals2 []string
ArrayEach(data, func(value []byte, dataType ValueType, offset int, err error) {
vals1 = append(vals1, string(value))
}, "arr")
ArrayEach(data, func(value []byte, dataType ValueType, offset int, err error) {
vals2 = append(vals2, string(value))
}, "arr")
if len(vals1) != len(vals2) {
t.Fatalf("ArrayEach length mismatch: %d vs %d", len(vals1), len(vals2))
}
for i := range vals1 {
if vals1[i] != vals2[i] {
t.Fatalf("ArrayEach element %d mismatch: %q vs %q", i, vals1[i], vals2[i])
}
}
})
t.Run("ObjectEach", func(t *testing.T) {
data := []byte(`{"a":1,"b":2,"c":3}`)
var keys1, keys2 []string
ObjectEach(data, func(key []byte, value []byte, dataType ValueType, offset int) error {
keys1 = append(keys1, string(key))
return nil
})
ObjectEach(data, func(key []byte, value []byte, dataType ValueType, offset int) error {
keys2 = append(keys2, string(key))
return nil
})
if len(keys1) != len(keys2) {
t.Fatalf("ObjectEach length mismatch: %d vs %d", len(keys1), len(keys2))
}
for i := range keys1 {
if keys1[i] != keys2[i] {
t.Fatalf("ObjectEach key %d mismatch: %q vs %q", i, keys1[i], keys2[i])
}
}
})
t.Run("EachKey", func(t *testing.T) {
data := []byte(`{"name":"test","age":30}`)
paths := [][]string{{"name"}, {"age"}, {"missing"}}
var results1, results2 []string
EachKey(data, func(idx int, value []byte, vt ValueType, err error) {
results1 = append(results1, fmt.Sprintf("%d:%s:%v", idx, string(value), vt))
}, paths...)
EachKey(data, func(idx int, value []byte, vt ValueType, err error) {
results2 = append(results2, fmt.Sprintf("%d:%s:%v", idx, string(value), vt))
}, paths...)
if len(results1) != len(results2) {
t.Fatalf("EachKey length mismatch: %d vs %d", len(results1), len(results2))
}
for i := range results1 {
if results1[i] != results2[i] {
t.Fatalf("EachKey result %d mismatch: %q vs %q", i, results1[i], results2[i])
}
}
})
}
// Verifies: SYS-REQ-103
// MCDC SYS-REQ-103: getunsafestring_called_twice_with_same_input=T, getunsafestring_returns_identical_results=T => TRUE
func TestGetUnsafeStringDeterminism(t *testing.T) {
data := []byte(`{"s":"hello\\world"}`)
v1, e1 := GetUnsafeString(data, "s")
v2, e2 := GetUnsafeString(data, "s")
if v1 != v2 {
t.Fatalf("GetUnsafeString value mismatch: %q vs %q", v1, v2)
}
if (e1 == nil) != (e2 == nil) {
t.Fatalf("GetUnsafeString error mismatch: %v vs %v", e1, e2)
}
}
// Verifies: SYS-REQ-106
// MCDC SYS-REQ-106: parse_helper_called_twice_with_same_input=T, parse_helper_returns_identical_results=T => TRUE
func TestParseHelperDeterminism(t *testing.T) {
// ParseBoolean
b1, be1 := ParseBoolean([]byte("true"))
b2, be2 := ParseBoolean([]byte("true"))
if b1 != b2 || (be1 == nil) != (be2 == nil) {
t.Fatalf("ParseBoolean not deterministic")
}
// ParseInt
i1, ie1 := ParseInt([]byte("42"))
i2, ie2 := ParseInt([]byte("42"))
if i1 != i2 || (ie1 == nil) != (ie2 == nil) {
t.Fatalf("ParseInt not deterministic")
}
// ParseFloat
f1, fe1 := ParseFloat([]byte("3.14"))
f2, fe2 := ParseFloat([]byte("3.14"))
if f1 != f2 || (fe1 == nil) != (fe2 == nil) {
t.Fatalf("ParseFloat not deterministic")
}
// ParseString
s1, se1 := ParseString([]byte(`hello\nworld`))
s2, se2 := ParseString([]byte(`hello\nworld`))
if s1 != s2 || (se1 == nil) != (se2 == nil) {
t.Fatalf("ParseString not deterministic")
}
}
// =============================================================================
// Idempotency tests
// =============================================================================
// Verifies: SYS-REQ-087
// MCDC SYS-REQ-087: get_called_on_valid_input=T, get_does_not_mutate_input=T => TRUE
func TestGetIdempotencyInputNotMutated(t *testing.T) {
original := `{"name":"alice","age":30,"nested":{"key":"value"}}`
data := []byte(original)
snapshot := make([]byte, len(data))
copy(snapshot, data)
// Call Get multiple times with different key paths
Get(data, "name")
Get(data, "age")
Get(data, "nested", "key")
Get(data, "missing")
if !bytes.Equal(data, snapshot) {
t.Fatalf("Get mutated input: original %q, after %q", snapshot, data)
}
}
// Verifies: SYS-REQ-100
// MCDC SYS-REQ-100: set_applied_twice_with_same_args=T, set_second_call_produces_same_result=T => TRUE
func TestSetIdempotency(t *testing.T) {
data := []byte(`{"name":"alice","age":30}`)
setValue := []byte(`"bob"`)
// First Set application
result1, err1 := Set(data, setValue, "name")
if err1 != nil {
t.Fatalf("First Set returned error: %v", err1)
}
// Second Set application on the result of the first
result2, err2 := Set(result1, setValue, "name")
if err2 != nil {
t.Fatalf("Second Set returned error: %v", err2)
}
// The results should be identical -- setting the same key to the same value twice
if !bytes.Equal(result1, result2) {
t.Fatalf("Set not idempotent: first %q, second %q", result1, result2)
}
}
// =============================================================================
// Nil safety tests
// =============================================================================
// Verifies: SYS-REQ-088
// MCDC SYS-REQ-088: get_input_is_nil=T, get_returns_safe_result_for_nil=T => TRUE
func TestGetNilSafety(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("Get(nil) panicked: %v", r)
}
}()
_, _, _, err := Get(nil, "key")
if err == nil {
t.Logf("Get(nil, 'key') returned no error (acceptable if not-found)")
}
// Also test nil with no keys
_, _, _, err = Get(nil)
_ = err
}
// Verifies: SYS-REQ-091
// MCDC SYS-REQ-091: getstring_input_is_nil=T, getstring_returns_safe_result_for_nil=T => TRUE
func TestGetStringNilSafety(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("GetString(nil) panicked: %v", r)
}
}()
val, err := GetString(nil, "key")
if val != "" && err == nil {
t.Fatalf("GetString(nil) returned non-empty value without error: %q", val)
}
}
// Verifies: SYS-REQ-095
// MCDC SYS-REQ-095: typed_getter_input_is_nil=T, typed_getter_returns_safe_result_for_nil=T => TRUE
func TestTypedGetterNilSafety(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("Typed getter on nil panicked: %v", r)
}
}()
ival, ierr := GetInt(nil, "key")
if ival != 0 && ierr == nil {
t.Fatalf("GetInt(nil) returned non-zero without error: %d", ival)
}
fval, ferr := GetFloat(nil, "key")
if fval != 0 && ferr == nil {
t.Fatalf("GetFloat(nil) returned non-zero without error: %f", fval)
}
bval, berr := GetBoolean(nil, "key")
if bval && berr == nil {
t.Fatalf("GetBoolean(nil) returned true without error")
}
}
// Verifies: SYS-REQ-098
// MCDC SYS-REQ-098: traversal_input_is_nil=T, traversal_returns_safe_result_for_nil=T => TRUE
func TestTraversalNilSafety(t *testing.T) {
t.Run("ArrayEach_nil", func(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("ArrayEach(nil) panicked: %v", r)
}
}()
callbackCalled := false
_, err := ArrayEach(nil, func(value []byte, dataType ValueType, offset int, err error) {
callbackCalled = true
})
if callbackCalled {
t.Fatalf("ArrayEach(nil) invoked callback")
}
if err == nil {
t.Fatalf("ArrayEach(nil) returned no error")
}
})
t.Run("ObjectEach_nil", func(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("ObjectEach(nil) panicked: %v", r)
}
}()
callbackCalled := false
err := ObjectEach(nil, func(key []byte, value []byte, dataType ValueType, offset int) error {
callbackCalled = true
return nil
})
if callbackCalled {
t.Fatalf("ObjectEach(nil) invoked callback")
}
if err == nil {
t.Fatalf("ObjectEach(nil) returned no error")
}
})
t.Run("EachKey_nil", func(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("EachKey(nil) panicked: %v", r)
}
}()
callbackCalled := false
EachKey(nil, func(idx int, value []byte, vt ValueType, err error) {
callbackCalled = true
}, []string{"key"})
if callbackCalled {
t.Fatalf("EachKey(nil) invoked callback")
}
})
}
// Verifies: SYS-REQ-101
// MCDC SYS-REQ-101: mutation_input_is_nil=T, mutation_returns_safe_result_for_nil=T => TRUE
func TestMutationNilSafety(t *testing.T) {
t.Run("Set_nil", func(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("Set(nil) panicked: %v", r)
}
}()
_, err := Set(nil, []byte(`"value"`), "key")
// Set on nil should return an error or handle gracefully
_ = err
})
t.Run("Delete_nil", func(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("Delete(nil) panicked: %v", r)
}
}()
result := Delete(nil, "key")
// Delete on nil should return nil or empty without panic
_ = result
})
}
// Verifies: SYS-REQ-104
// MCDC SYS-REQ-104: getunsafestring_input_is_nil=T, getunsafestring_returns_safe_result_for_nil=T => TRUE
func TestGetUnsafeStringNilSafety(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("GetUnsafeString(nil) panicked: %v", r)
}
}()
val, err := GetUnsafeString(nil, "key")
if val != "" && err == nil {
t.Fatalf("GetUnsafeString(nil) returned non-empty value without error: %q", val)
}
}
// Verifies: SYS-REQ-107
// MCDC SYS-REQ-107: parse_helper_input_is_nil=T, parse_helper_returns_safe_result_for_nil=T => TRUE
func TestParseHelperNilSafety(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("Parse helper on nil panicked: %v", r)
}
}()
// ParseBoolean(nil)
bval, berr := ParseBoolean(nil)
if bval && berr == nil {
t.Fatalf("ParseBoolean(nil) returned true without error")
}
// ParseInt(nil)
ival, ierr := ParseInt(nil)
if ival != 0 && ierr == nil {
t.Fatalf("ParseInt(nil) returned non-zero without error: %d", ival)
}
// ParseFloat(nil)
fval, ferr := ParseFloat(nil)
if fval != 0 && ferr == nil {
t.Fatalf("ParseFloat(nil) returned non-zero without error: %f", fval)
}
// ParseString(nil) -- should return empty string
sval, serr := ParseString(nil)
_ = serr
_ = sval
}
// =============================================================================
// Encoding safety tests
// =============================================================================
// Verifies: SYS-REQ-092
// MCDC SYS-REQ-092: getstring_input_has_escaped_unicode=T, getstring_decodes_and_preserves_semantics=T => TRUE
func TestGetStringEncodingSafety(t *testing.T) {
cases := []struct {
name string
jsonData string
key string
expected string
}{
{name: "basic latin escape", jsonData: `{"s":"\u0041"}`, key: "s", expected: "A"},
{name: "e-acute", jsonData: `{"s":"\u00e9"}`, key: "s", expected: "\u00e9"},
{name: "emoji surrogate pair", jsonData: `{"s":"\uD83D\uDE00"}`, key: "s", expected: "\U0001F600"},
{name: "newline escape", jsonData: `{"s":"line1\nline2"}`, key: "s", expected: "line1\nline2"},
{name: "tab escape", jsonData: `{"s":"col1\tcol2"}`, key: "s", expected: "col1\tcol2"},
{name: "backslash escape", jsonData: `{"s":"path\\to\\file"}`, key: "s", expected: `path\to\file`},
{name: "quote escape", jsonData: `{"s":"say \"hello\""}`, key: "s", expected: `say "hello"`},
{name: "solidus escape", jsonData: `{"s":"a\/b"}`, key: "s", expected: "a/b"},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
val, err := GetString([]byte(tc.jsonData), tc.key)
if err != nil {
t.Fatalf("GetString returned error: %v", err)
}
if val != tc.expected {
t.Fatalf("GetString decoded %q, expected %q", val, tc.expected)
}
})
}
}
// Verifies: SYS-REQ-108
// MCDC SYS-REQ-108: parsestring_input_has_standard_escapes=T, parsestring_roundtrip_preserves_semantics=T => TRUE
func TestParseStringEncodingSafetyRoundtrip(t *testing.T) {
cases := []struct {
name string
input string
expected string
}{
{name: "newline", input: `hello\nworld`, expected: "hello\nworld"},
{name: "tab", input: `col1\tcol2`, expected: "col1\tcol2"},
{name: "backslash", input: `path\\to\\file`, expected: `path\to\file`},
{name: "quote", input: `say \"hi\"`, expected: `say "hi"`},
{name: "unicode BMP", input: `\u0048\u0065\u006C\u006C\u006F`, expected: "Hello"},
{name: "solidus", input: `a\/b`, expected: "a/b"},
{name: "backspace", input: `a\bc`, expected: "a\bc"},
{name: "formfeed", input: `a\fc`, expected: "a\fc"},
{name: "carriage return", input: `a\rc`, expected: "a\rc"},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
decoded, err := ParseString([]byte(tc.input))
if err != nil {
t.Fatalf("ParseString returned error: %v", err)
}
if decoded != tc.expected {
t.Fatalf("ParseString decoded %q, expected %q", decoded, tc.expected)
}
// Round-trip check: re-encode and verify the decoded string marshals
// back to JSON that, when decoded again, gives the same Go string.
reEncoded, err := json.Marshal(decoded)
if err != nil {
t.Fatalf("json.Marshal failed: %v", err)
}
var reDecoded string
if err := json.Unmarshal(reEncoded, &reDecoded); err != nil {
t.Fatalf("json.Unmarshal failed: %v", err)
}
if reDecoded != decoded {
t.Fatalf("Round-trip mismatch: original %q, round-tripped %q", decoded, reDecoded)
}
})
}
}
// =============================================================================
// Edge case tests
// =============================================================================
// Verifies: SYS-REQ-089
// MCDC SYS-REQ-089: get_input_is_deeply_nested=T, get_handles_deep_nesting_safely=T => TRUE
func TestGetDeepNesting(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("Get on deeply nested JSON panicked: %v", r)
}
}()
// Build 64-level nested JSON: {"a":{"a":{"a":...42...}}}
depth := 64
var keys []string
prefix := strings.Repeat(`{"a":`, depth)
suffix := strings.Repeat(`}`, depth)
data := []byte(prefix + `42` + suffix)
for i := 0; i < depth; i++ {
keys = append(keys, "a")
}
val, dt, _, err := Get(data, keys...)
if err != nil {
t.Logf("Get on %d-deep nesting returned error (acceptable): %v", depth, err)
return
}
if dt != Number {
t.Fatalf("Expected Number type at depth %d, got %v", depth, dt)
}
if string(val) != "42" {
t.Fatalf("Expected value 42, got %q", val)
}
}
// Verifies: SYS-REQ-093
// MCDC SYS-REQ-093: getstring_input_has_unicode_edge_cases=T, getstring_handles_unicode_edges_safely=T => TRUE
func TestGetStringUnicodeEdgeCases(t *testing.T) {
cases := []struct {
name string
jsonData string
key string
wantErr bool
}{
{
name: "BOM character",
jsonData: `{"s":"\uFEFF"}`,
key: "s",
},
{
name: "zero-width joiner",
jsonData: `{"s":"\u200D"}`,
key: "s",
},
{
name: "replacement character",
jsonData: `{"s":"\uFFFD"}`,
key: "s",
},
{
name: "null character escape",
jsonData: `{"s":"\u0000"}`,
key: "s",
},
{
name: "max BMP codepoint",
jsonData: `{"s":"\uFFFF"}`,
key: "s",
},
{
name: "multi-byte UTF-8 literal in value",
jsonData: "{\"s\":\"\xe2\x80\x8b\"}", // zero-width space (U+200B) as raw UTF-8
key: "s",
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("GetString panicked on %s: %v", tc.name, r)
}
}()
val, err := GetString([]byte(tc.jsonData), tc.key)
if tc.wantErr && err == nil {
t.Fatalf("Expected error for %s", tc.name)
}
if !tc.wantErr && err != nil {
t.Fatalf("GetString(%s) returned error: %v", tc.name, err)
}
_ = val
})
}
}
// Verifies: SYS-REQ-096
// MCDC SYS-REQ-096: getint_input_has_large_number_edge_case=T, getint_handles_large_numbers_safely=T => TRUE
func TestGetIntLargeNumberEdgeCases(t *testing.T) {
cases := []struct {
name string
data string
key string
wantVal int64
wantErr bool
}{
{
name: "max int64",
data: fmt.Sprintf(`{"n":%d}`, math.MaxInt64),
key: "n",
wantVal: math.MaxInt64,
},
{
name: "min int64",
data: fmt.Sprintf(`{"n":%d}`, math.MinInt64),
key: "n",
wantVal: math.MinInt64,
},
{
name: "overflow beyond max int64",
data: `{"n":9223372036854775808}`,
key: "n",
wantErr: true,
},
{
name: "negative zero",
data: `{"n":-0}`,
key: "n",
wantVal: 0,
},
{
name: "zero",
data: `{"n":0}`,
key: "n",
wantVal: 0,
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("GetInt panicked: %v", r)
}
}()
val, err := GetInt([]byte(tc.data), tc.key)
if tc.wantErr {
if err == nil {
t.Fatalf("Expected error, got value %d", val)
}
return
}
if err != nil {
t.Fatalf("GetInt returned error: %v", err)
}
if val != tc.wantVal {
t.Fatalf("GetInt = %d, want %d", val, tc.wantVal)
}
})
}
}
// Verifies: SYS-REQ-099
// MCDC SYS-REQ-099: traversal_input_is_deeply_nested=T, traversal_handles_deep_nesting_safely=T => TRUE
func TestTraversalDeepNesting(t *testing.T) {
t.Run("ArrayEach_deep", func(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("ArrayEach on deep nesting panicked: %v", r)
}
}()
// Build deeply nested array: [[[[...42...]]]]
depth := 64
prefix := strings.Repeat("[", depth)
suffix := strings.Repeat("]", depth)
data := []byte(prefix + "42" + suffix)
// ArrayEach on the outer array
_, err := ArrayEach(data, func(value []byte, dataType ValueType, offset int, err error) {
// The inner element is another deeply nested array or the final value
})
// We accept any result as long as no panic
_ = err
})
t.Run("ObjectEach_deep", func(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("ObjectEach on deep nesting panicked: %v", r)
}
}()
// Build deeply nested object: {"a":{"a":{"a":...{"a":42}...}}}
depth := 64
prefix := strings.Repeat(`{"a":`, depth)
suffix := strings.Repeat("}", depth)
data := []byte(prefix + "42" + suffix)
err := ObjectEach(data, func(key []byte, value []byte, dataType ValueType, offset int) error {
return nil
})
_ = err
})
}
// Verifies: SYS-REQ-102
// MCDC SYS-REQ-102: mutation_input_has_unicode_keys=T, mutation_handles_unicode_keys_safely=T => TRUE
func TestMutationUnicodeKeys(t *testing.T) {
t.Run("Set_unicode_key", func(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("Set with unicode key panicked: %v", r)
}
}()
data := []byte(`{"caf\u00e9":"latte","normal":"value"}`)
// Try to set a value using a Unicode key
result, err := Set(data, []byte(`"espresso"`), "normal")
if err != nil {
t.Fatalf("Set returned error: %v", err)
}
// Verify the mutation was applied
val, err := GetString(result, "normal")
if err != nil {
t.Fatalf("GetString after Set returned error: %v", err)
}
if val != "espresso" {
t.Fatalf("Expected 'espresso', got %q", val)
}
})
t.Run("Delete_unicode_key", func(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("Delete with unicode key panicked: %v", r)
}
}()
// Test Delete on document with a raw UTF-8 key
data := []byte("{\"caf\xc3\xa9\":\"latte\",\"tea\":\"green\"}")
result := Delete(data, "tea")
// Verify tea was removed and the document is still parseable
_, _, _, err := Get(result, "tea")
if !errors.Is(err, KeyPathNotFoundError) {
t.Fatalf("Expected KeyPathNotFoundError after Delete, got: %v", err)
}
})
}
// Verifies: SYS-REQ-105
// MCDC SYS-REQ-105: getunsafestring_input_has_unicode_edge_cases=T, getunsafestring_handles_unicode_edges_safely=T => TRUE
func TestGetUnsafeStringUnicodeEdgeCases(t *testing.T) {
cases := []struct {
name string
data string
key string
}{
{name: "BOM in value", data: `{"s":"\uFEFF"}`, key: "s"},
{name: "raw multi-byte UTF-8", data: "{\"s\":\"\xc3\xa9\"}", key: "s"},
{name: "emoji in value", data: "{\"s\":\"\xf0\x9f\x98\x80\"}", key: "s"},
{name: "ZWJ sequence", data: "{\"s\":\"\xe2\x80\x8d\"}", key: "s"},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("GetUnsafeString panicked on %s: %v", tc.name, r)
}
}()
val, err := GetUnsafeString([]byte(tc.data), tc.key)
// GetUnsafeString returns raw bytes -- we just verify no panic
_ = val
_ = err
})
}
}
// Verifies: SYS-REQ-109
// MCDC SYS-REQ-109: parseint_input_has_edge_case_number=T, parseint_handles_edge_numbers_safely=T => TRUE
func TestParseIntEdgeCaseNumbers(t *testing.T) {
cases := []struct {
name string
input string
wantVal int64
wantErr bool
}{
{name: "negative zero", input: "-0", wantVal: 0},
{name: "positive zero", input: "0", wantVal: 0},
{name: "max int64", input: "9223372036854775807", wantVal: math.MaxInt64},
{name: "min int64", input: "-9223372036854775808", wantVal: math.MinInt64},
{name: "max+1 overflow", input: "9223372036854775808", wantErr: true},
{name: "min-1 overflow", input: "-9223372036854775809", wantErr: true},
{name: "100-digit number", input: strings.Repeat("9", 100), wantErr: true},
{name: "single digit", input: "7", wantVal: 7},
{name: "negative single digit", input: "-3", wantVal: -3},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
defer func() {
if r := recover(); r != nil {
t.Fatalf("ParseInt panicked: %v", r)
}
}()
val, err := ParseInt([]byte(tc.input))
if tc.wantErr {
if err == nil {
t.Fatalf("Expected error for %q, got value %d", tc.input, val)
}
return
}
if err != nil {
t.Fatalf("ParseInt(%q) returned error: %v", tc.input, err)
}
if val != tc.wantVal {
t.Fatalf("ParseInt(%q) = %d, want %d", tc.input, val, tc.wantVal)
}
})
}
}