forked from nodejs/node
/
json_test.cc
754 lines (672 loc) · 25.1 KB
/
json_test.cc
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
// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "json.h"
#include <array>
#include <clocale>
#include <cmath>
#include <cstdlib>
#include <cstring>
#include <iomanip>
#include <iostream>
#include <sstream>
#include <string>
#include "cbor.h"
#include "parser_handler.h"
#include "span.h"
#include "status.h"
#include "status_test_support.h"
#include "test_platform.h"
namespace v8_crdtp {
namespace json {
// =============================================================================
// json::NewJSONEncoder - for encoding streaming parser events as JSON
// =============================================================================
void WriteUTF8AsUTF16(ParserHandler* writer, const std::string& utf8) {
writer->HandleString16(SpanFrom(UTF8ToUTF16(SpanFrom(utf8))));
}
TEST(JsonEncoder, OverlongEncodings) {
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
// We encode 0x7f, which is the DEL ascii character, as a 4 byte UTF8
// sequence. This is called an overlong encoding, because only 1 byte
// is needed to represent 0x7f as UTF8.
std::vector<uint8_t> chars = {
0xf0, // Starts 4 byte utf8 sequence
0x80, // continuation byte
0x81, // continuation byte w/ payload bit 7 set to 1.
0xbf, // continuation byte w/ payload bits 0-6 set to 11111.
};
writer->HandleString8(SpanFrom(chars));
EXPECT_EQ("\"\"", out); // Empty string means that 0x7f was rejected (good).
}
TEST(JsonEncoder, NotAContinuationByte) {
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
// |world| encodes the globe as a 4 byte UTF8 sequence. So, naturally, it'll
// have a start byte, followed by three continuation bytes.
std::string world = "🌎";
ASSERT_EQ(4u, world.size());
ASSERT_EQ(world[1] & 0xc0, 0x80); // checks for continuation byte
ASSERT_EQ(world[2] & 0xc0, 0x80);
ASSERT_EQ(world[3] & 0xc0, 0x80);
// Now create a corrupted UTF8 string, starting with the first two bytes from
// |world|, followed by an ASCII message. Upon encountering '!', our decoder
// will realize that it's not a continuation byte; it'll skip to the end of
// this UTF8 sequence and continue with the next character. In this case, the
// 'H', of "Hello".
std::vector<uint8_t> chars;
chars.push_back(world[0]);
chars.push_back(world[1]);
chars.push_back('!');
chars.push_back('?');
chars.push_back('H');
chars.push_back('e');
chars.push_back('l');
chars.push_back('l');
chars.push_back('o');
writer->HandleString8(SpanFrom(chars));
EXPECT_EQ("\"Hello\"", out); // "Hello" shows we restarted at 'H'.
}
TEST(JsonEncoder, EscapesLoneHighSurrogates) {
// This tests that the JSON encoder escapes lone high surrogates, i.e.
// invalid code points in the range from 0xD800 to 0xDBFF. In
// unescaped form, these cannot be represented in well-formed UTF-8 or
// UTF-16.
std::vector<uint16_t> chars = {'a', 0xd800, 'b', 0xdada, 'c', 0xdbff, 'd'};
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
writer->HandleString16(span<uint16_t>(chars.data(), chars.size()));
EXPECT_EQ("\"a\\ud800b\\udadac\\udbffd\"", out);
}
TEST(JsonEncoder, EscapesLoneLowSurrogates) {
// This tests that the JSON encoder escapes lone low surrogates, i.e.
// invalid code points in the range from 0xDC00 to 0xDFFF. In
// unescaped form, these cannot be represented in well-formed UTF-8 or
// UTF-16.
std::vector<uint16_t> chars = {'a', 0xdc00, 'b', 0xdede, 'c', 0xdfff, 'd'};
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
writer->HandleString16(span<uint16_t>(chars.data(), chars.size()));
EXPECT_EQ("\"a\\udc00b\\udedec\\udfffd\"", out);
}
TEST(JsonEncoder, EscapesFFFF) {
// This tests that the JSON encoder will escape the UTF16 input 0xffff as
// \uffff; useful to check this since it's an edge case.
std::vector<uint16_t> chars = {'a', 'b', 'c', 0xffff, 'd'};
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
writer->HandleString16(span<uint16_t>(chars.data(), chars.size()));
EXPECT_EQ("\"abc\\uffffd\"", out);
}
TEST(JsonEncoder, Passes0x7FString8) {
std::vector<uint8_t> chars = {'a', 0x7f, 'b'};
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
writer->HandleString8(span<uint8_t>(chars.data(), chars.size()));
EXPECT_EQ(
"\"a\x7f"
"b\"",
out);
}
TEST(JsonEncoder, Passes0x7FString16) {
std::vector<uint16_t> chars16 = {'a', 0x7f, 'b'};
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
writer->HandleString16(span<uint16_t>(chars16.data(), chars16.size()));
EXPECT_EQ(
"\"a\x7f"
"b\"",
out);
}
TEST(JsonEncoder, IncompleteUtf8Sequence) {
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
writer->HandleArrayBegin(); // This emits [, which starts an array.
{ // 🌎 takes four bytes to encode in UTF-8. We test with the first three;
// This means we're trying to emit a string that consists solely of an
// incomplete UTF-8 sequence. So the string in the JSON output is empty.
std::string world_utf8 = "🌎";
ASSERT_EQ(4u, world_utf8.size());
std::vector<uint8_t> chars(world_utf8.begin(), world_utf8.begin() + 3);
writer->HandleString8(SpanFrom(chars));
EXPECT_EQ("[\"\"", out); // Incomplete sequence rejected: empty string.
}
{ // This time, the incomplete sequence is at the end of the string.
std::string msg = "Hello, \xF0\x9F\x8C";
std::vector<uint8_t> chars(msg.begin(), msg.end());
writer->HandleString8(SpanFrom(chars));
EXPECT_EQ("[\"\",\"Hello, \"", out); // Incomplete sequence dropped at end.
}
}
TEST(JsonStdStringWriterTest, HelloWorld) {
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
writer->HandleMapBegin();
WriteUTF8AsUTF16(writer.get(), "msg1");
WriteUTF8AsUTF16(writer.get(), "Hello, 🌎.");
std::string key = "msg1-as-utf8";
std::string value = "Hello, 🌎.";
writer->HandleString8(SpanFrom(key));
writer->HandleString8(SpanFrom(value));
WriteUTF8AsUTF16(writer.get(), "msg2");
WriteUTF8AsUTF16(writer.get(), "\\\b\r\n\t\f\"");
WriteUTF8AsUTF16(writer.get(), "nested");
writer->HandleMapBegin();
WriteUTF8AsUTF16(writer.get(), "double");
writer->HandleDouble(3.1415);
WriteUTF8AsUTF16(writer.get(), "int");
writer->HandleInt32(-42);
WriteUTF8AsUTF16(writer.get(), "bool");
writer->HandleBool(false);
WriteUTF8AsUTF16(writer.get(), "null");
writer->HandleNull();
writer->HandleMapEnd();
WriteUTF8AsUTF16(writer.get(), "array");
writer->HandleArrayBegin();
writer->HandleInt32(1);
writer->HandleInt32(2);
writer->HandleInt32(3);
writer->HandleArrayEnd();
writer->HandleMapEnd();
EXPECT_TRUE(status.ok());
EXPECT_EQ(
"{\"msg1\":\"Hello, \\ud83c\\udf0e.\","
"\"msg1-as-utf8\":\"Hello, \\ud83c\\udf0e.\","
"\"msg2\":\"\\\\\\b\\r\\n\\t\\f\\\"\","
"\"nested\":{\"double\":3.1415,\"int\":-42,"
"\"bool\":false,\"null\":null},\"array\":[1,2,3]}",
out);
}
TEST(JsonStdStringWriterTest, ScalarsAreRenderedAsInt) {
// Test that Number.MIN_SAFE_INTEGER / Number.MAX_SAFE_INTEGER from Javascript
// are rendered as integers (no decimal point / rounding), even when we
// encode them from double. Javascript's Number is an IEE754 double, so
// it has 53 bits to represent integers.
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
writer->HandleMapBegin();
writer->HandleString8(SpanFrom("Number.MIN_SAFE_INTEGER"));
EXPECT_EQ(-0x1fffffffffffff, -9007199254740991); // 53 bits for integers.
writer->HandleDouble(-9007199254740991); // Note HandleDouble here.
writer->HandleString8(SpanFrom("Number.MAX_SAFE_INTEGER"));
EXPECT_EQ(0x1fffffffffffff, 9007199254740991); // 53 bits for integers.
writer->HandleDouble(9007199254740991); // Note HandleDouble here.
writer->HandleMapEnd();
EXPECT_TRUE(status.ok());
EXPECT_EQ(
"{\"Number.MIN_SAFE_INTEGER\":-9007199254740991,"
"\"Number.MAX_SAFE_INTEGER\":9007199254740991}",
out);
}
TEST(JsonStdStringWriterTest, RepresentingNonFiniteValuesAsNull) {
// JSON can't represent +Infinity, -Infinity, or NaN.
// So in practice it's mapped to null.
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
writer->HandleMapBegin();
writer->HandleString8(SpanFrom("Infinity"));
writer->HandleDouble(std::numeric_limits<double>::infinity());
writer->HandleString8(SpanFrom("-Infinity"));
writer->HandleDouble(-std::numeric_limits<double>::infinity());
writer->HandleString8(SpanFrom("NaN"));
writer->HandleDouble(std::numeric_limits<double>::quiet_NaN());
writer->HandleMapEnd();
EXPECT_TRUE(status.ok());
EXPECT_EQ("{\"Infinity\":null,\"-Infinity\":null,\"NaN\":null}", out);
}
TEST(JsonStdStringWriterTest, BinaryEncodedAsJsonString) {
// The encoder emits binary submitted to ParserHandler::HandleBinary
// as base64. The following three examples are taken from
// https://en.wikipedia.org/wiki/Base64.
{
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
writer->HandleBinary(SpanFrom(std::vector<uint8_t>({'M', 'a', 'n'})));
EXPECT_TRUE(status.ok());
EXPECT_EQ("\"TWFu\"", out);
}
{
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
writer->HandleBinary(SpanFrom(std::vector<uint8_t>({'M', 'a'})));
EXPECT_TRUE(status.ok());
EXPECT_EQ("\"TWE=\"", out);
}
{
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
writer->HandleBinary(SpanFrom(std::vector<uint8_t>({'M'})));
EXPECT_TRUE(status.ok());
EXPECT_EQ("\"TQ==\"", out);
}
{ // "Hello, world.", verified with base64decode.org.
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
writer->HandleBinary(SpanFrom(std::vector<uint8_t>(
{'H', 'e', 'l', 'l', 'o', ',', ' ', 'w', 'o', 'r', 'l', 'd', '.'})));
EXPECT_TRUE(status.ok());
EXPECT_EQ("\"SGVsbG8sIHdvcmxkLg==\"", out);
}
}
TEST(JsonStdStringWriterTest, HandlesErrors) {
// When an error is sent via HandleError, it saves it in the provided
// status and clears the output.
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
writer->HandleMapBegin();
WriteUTF8AsUTF16(writer.get(), "msg1");
writer->HandleError(Status{Error::JSON_PARSER_VALUE_EXPECTED, 42});
EXPECT_THAT(status, StatusIs(Error::JSON_PARSER_VALUE_EXPECTED, 42u));
EXPECT_EQ("", out);
}
TEST(JsonStdStringWriterTest, DoubleToString_LeadingZero) {
// In JSON, .1 must be rendered as 0.1, and -.7 must be rendered as -0.7.
std::string out;
Status status;
std::unique_ptr<ParserHandler> writer = NewJSONEncoder(&out, &status);
writer->HandleArrayBegin();
writer->HandleDouble(.1);
writer->HandleDouble(-.7);
writer->HandleArrayEnd();
EXPECT_EQ("[0.1,-0.7]", out);
}
// =============================================================================
// json::ParseJSON - for receiving streaming parser events for JSON
// =============================================================================
class Log : public ParserHandler {
public:
void HandleMapBegin() override { log_ << "map begin\n"; }
void HandleMapEnd() override { log_ << "map end\n"; }
void HandleArrayBegin() override { log_ << "array begin\n"; }
void HandleArrayEnd() override { log_ << "array end\n"; }
void HandleString8(span<uint8_t> chars) override {
log_ << "string8: " << std::string(chars.begin(), chars.end()) << "\n";
}
void HandleString16(span<uint16_t> chars) override {
raw_log_string16_.emplace_back(chars.begin(), chars.end());
log_ << "string16: " << UTF16ToUTF8(chars) << "\n";
}
void HandleBinary(span<uint8_t> bytes) override {
// JSON doesn't have native support for arbitrary bytes, so our parser will
// never call this.
CHECK(false);
}
void HandleDouble(double value) override {
log_ << "double: " << value << "\n";
}
void HandleInt32(int32_t value) override { log_ << "int: " << value << "\n"; }
void HandleBool(bool value) override { log_ << "bool: " << value << "\n"; }
void HandleNull() override { log_ << "null\n"; }
void HandleError(Status status) override { status_ = status; }
std::string str() const { return status_.ok() ? log_.str() : ""; }
std::vector<std::vector<uint16_t>> raw_log_string16() const {
return raw_log_string16_;
}
Status status() const { return status_; }
private:
std::ostringstream log_;
std::vector<std::vector<uint16_t>> raw_log_string16_;
Status status_;
};
class JsonParserTest : public ::testing::Test {
protected:
Log log_;
};
TEST_F(JsonParserTest, SimpleDictionary) {
std::string json = "{\"foo\": 42}";
ParseJSON(SpanFrom(json), &log_);
EXPECT_TRUE(log_.status().ok());
EXPECT_EQ(
"map begin\n"
"string16: foo\n"
"int: 42\n"
"map end\n",
log_.str());
}
TEST_F(JsonParserTest, UsAsciiDelCornerCase) {
// DEL (0x7f) is a 7 bit US-ASCII character, and while it is a control
// character according to Unicode, it's not considered a control
// character in https://tools.ietf.org/html/rfc7159#section-7, so
// it can be placed directly into the JSON string, without JSON escaping.
std::string json = "{\"foo\": \"a\x7f\"}";
ParseJSON(SpanFrom(json), &log_);
EXPECT_TRUE(log_.status().ok());
EXPECT_EQ(
"map begin\n"
"string16: foo\n"
"string16: a\x7f\n"
"map end\n",
log_.str());
// We've seen an implementation of UTF16ToUTF8 which would replace the DEL
// character with ' ', so this simple roundtrip tests the routines in
// encoding_test_helper.h, to make test failures of the above easier to
// diagnose.
std::vector<uint16_t> utf16 = UTF8ToUTF16(SpanFrom(json));
EXPECT_EQ(json, UTF16ToUTF8(SpanFrom(utf16)));
}
TEST_F(JsonParserTest, Whitespace) {
std::string json = "\n {\n\"msg\"\n: \v\"Hello, world.\"\t\r}\t";
ParseJSON(SpanFrom(json), &log_);
EXPECT_TRUE(log_.status().ok());
EXPECT_EQ(
"map begin\n"
"string16: msg\n"
"string16: Hello, world.\n"
"map end\n",
log_.str());
}
TEST_F(JsonParserTest, NestedDictionary) {
std::string json = "{\"foo\": {\"bar\": {\"baz\": 1}, \"bar2\": 2}}";
ParseJSON(SpanFrom(json), &log_);
EXPECT_TRUE(log_.status().ok());
EXPECT_EQ(
"map begin\n"
"string16: foo\n"
"map begin\n"
"string16: bar\n"
"map begin\n"
"string16: baz\n"
"int: 1\n"
"map end\n"
"string16: bar2\n"
"int: 2\n"
"map end\n"
"map end\n",
log_.str());
}
TEST_F(JsonParserTest, Doubles) {
std::string json = "{\"foo\": 3.1415, \"bar\": 31415e-4}";
ParseJSON(SpanFrom(json), &log_);
EXPECT_TRUE(log_.status().ok());
EXPECT_EQ(
"map begin\n"
"string16: foo\n"
"double: 3.1415\n"
"string16: bar\n"
"double: 3.1415\n"
"map end\n",
log_.str());
}
TEST_F(JsonParserTest, Unicode) {
// Globe character. 0xF0 0x9F 0x8C 0x8E in utf8, 0xD83C 0xDF0E in utf16.
std::string json = "{\"msg\": \"Hello, \\uD83C\\uDF0E.\"}";
ParseJSON(SpanFrom(json), &log_);
EXPECT_TRUE(log_.status().ok());
EXPECT_EQ(
"map begin\n"
"string16: msg\n"
"string16: Hello, 🌎.\n"
"map end\n",
log_.str());
}
TEST_F(JsonParserTest, Unicode_ParseUtf16) {
// Globe character. utf8: 0xF0 0x9F 0x8C 0x8E; utf16: 0xD83C 0xDF0E.
// Crescent moon character. utf8: 0xF0 0x9F 0x8C 0x99; utf16: 0xD83C 0xDF19.
// We provide the moon with json escape, but the earth as utf16 input.
// Either way they arrive as utf8 (after decoding in log_.str()).
std::vector<uint16_t> json =
UTF8ToUTF16(SpanFrom("{\"space\": \"🌎 \\uD83C\\uDF19.\"}"));
ParseJSON(SpanFrom(json), &log_);
EXPECT_TRUE(log_.status().ok());
EXPECT_EQ(
"map begin\n"
"string16: space\n"
"string16: 🌎 🌙.\n"
"map end\n",
log_.str());
}
TEST_F(JsonParserTest, Unicode_ParseUtf16_SingleEscapeUpToFFFF) {
// 0xFFFF is the max codepoint that can be represented as a single \u escape.
// One way to write this is \uffff, another way is to encode it as a 3 byte
// UTF-8 sequence (0xef 0xbf 0xbf). Both are equivalent.
// Example with both ways of encoding code point 0xFFFF in a JSON string.
std::string json = "{\"escape\": \"\xef\xbf\xbf or \\uffff\"}";
ParseJSON(SpanFrom(json), &log_);
EXPECT_TRUE(log_.status().ok());
// Shows both inputs result in equivalent output once converted to UTF-8.
EXPECT_EQ(
"map begin\n"
"string16: escape\n"
"string16: \xEF\xBF\xBF or \xEF\xBF\xBF\n"
"map end\n",
log_.str());
// Make an even stronger assertion: The parser represents \xffff as a single
// UTF-16 char.
ASSERT_EQ(2u, log_.raw_log_string16().size());
std::vector<uint16_t> expected = {0xffff, ' ', 'o', 'r', ' ', 0xffff};
EXPECT_EQ(expected, log_.raw_log_string16()[1]);
}
TEST_F(JsonParserTest, Unicode_ParseUtf8) {
// Used below:
// гласность - example for 2 byte utf8, Russian word "glasnost"
// 屋 - example for 3 byte utf8, Chinese word for "house"
// 🌎 - example for 4 byte utf8: 0xF0 0x9F 0x8C 0x8E; utf16: 0xD83C 0xDF0E.
// 🌙 - example for escapes: utf8: 0xF0 0x9F 0x8C 0x99; utf16: 0xD83C 0xDF19.
// We provide the moon with json escape, but the earth as utf8 input.
// Either way they arrive as utf8 (after decoding in log_.str()).
std::string json =
"{"
"\"escapes\": \"\\uD83C\\uDF19\","
"\"2 byte\":\"гласность\","
"\"3 byte\":\"屋\","
"\"4 byte\":\"🌎\""
"}";
ParseJSON(SpanFrom(json), &log_);
EXPECT_TRUE(log_.status().ok());
EXPECT_EQ(
"map begin\n"
"string16: escapes\n"
"string16: 🌙\n"
"string16: 2 byte\n"
"string16: гласность\n"
"string16: 3 byte\n"
"string16: 屋\n"
"string16: 4 byte\n"
"string16: 🌎\n"
"map end\n",
log_.str());
}
TEST_F(JsonParserTest, UnprocessedInputRemainsError) {
// Trailing junk after the valid JSON.
std::string json = "{\"foo\": 3.1415} junk";
size_t junk_idx = json.find("junk");
EXPECT_NE(junk_idx, std::string::npos);
ParseJSON(SpanFrom(json), &log_);
EXPECT_THAT(log_.status(),
StatusIs(Error::JSON_PARSER_UNPROCESSED_INPUT_REMAINS, junk_idx));
EXPECT_EQ("", log_.str());
}
std::string MakeNestedJson(int depth) {
std::string json;
for (int ii = 0; ii < depth; ++ii)
json += "{\"foo\":";
json += "42";
for (int ii = 0; ii < depth; ++ii)
json += "}";
return json;
}
TEST_F(JsonParserTest, StackLimitExceededError_BelowLimit) {
// kStackLimit is 300 (see json_parser.cc). First let's
// try with a small nested example.
std::string json_3 = MakeNestedJson(3);
ParseJSON(SpanFrom(json_3), &log_);
EXPECT_TRUE(log_.status().ok());
EXPECT_EQ(
"map begin\n"
"string16: foo\n"
"map begin\n"
"string16: foo\n"
"map begin\n"
"string16: foo\n"
"int: 42\n"
"map end\n"
"map end\n"
"map end\n",
log_.str());
}
TEST_F(JsonParserTest, StackLimitExceededError_AtLimit) {
// Now with kStackLimit (300).
std::string json_limit = MakeNestedJson(300);
ParseJSON(span<uint8_t>(reinterpret_cast<const uint8_t*>(json_limit.data()),
json_limit.size()),
&log_);
EXPECT_THAT(log_.status(), StatusIsOk());
}
TEST_F(JsonParserTest, StackLimitExceededError_AboveLimit) {
// Now with kStackLimit + 1 (301) - it exceeds in the innermost instance.
std::string exceeded = MakeNestedJson(301);
ParseJSON(SpanFrom(exceeded), &log_);
EXPECT_THAT(log_.status(), StatusIs(Error::JSON_PARSER_STACK_LIMIT_EXCEEDED,
strlen("{\"foo\":") * 301));
}
TEST_F(JsonParserTest, StackLimitExceededError_WayAboveLimit) {
// Now way past the limit. Still, the point of exceeding is 301.
std::string far_out = MakeNestedJson(320);
ParseJSON(SpanFrom(far_out), &log_);
EXPECT_THAT(log_.status(), StatusIs(Error::JSON_PARSER_STACK_LIMIT_EXCEEDED,
strlen("{\"foo\":") * 301));
}
TEST_F(JsonParserTest, NoInputError) {
std::string json = "";
ParseJSON(SpanFrom(json), &log_);
EXPECT_THAT(log_.status(), StatusIs(Error::JSON_PARSER_NO_INPUT, 0u));
EXPECT_EQ("", log_.str());
}
TEST_F(JsonParserTest, InvalidTokenError) {
std::string json = "|";
ParseJSON(SpanFrom(json), &log_);
EXPECT_THAT(log_.status(), StatusIs(Error::JSON_PARSER_INVALID_TOKEN, 0u));
EXPECT_EQ("", log_.str());
}
TEST_F(JsonParserTest, InvalidNumberError) {
// Mantissa exceeds max (the constant used here is int64_t max).
std::string json = "1E9223372036854775807";
ParseJSON(SpanFrom(json), &log_);
EXPECT_THAT(log_.status(), StatusIs(Error::JSON_PARSER_INVALID_NUMBER, 0u));
EXPECT_EQ("", log_.str());
}
TEST_F(JsonParserTest, InvalidStringError) {
// \x22 is an unsupported escape sequence
std::string json = "\"foo\\x22\"";
ParseJSON(SpanFrom(json), &log_);
EXPECT_THAT(log_.status(), StatusIs(Error::JSON_PARSER_INVALID_STRING, 0u));
EXPECT_EQ("", log_.str());
}
TEST_F(JsonParserTest, UnexpectedArrayEndError) {
std::string json = "[1,2,]";
ParseJSON(SpanFrom(json), &log_);
EXPECT_THAT(log_.status(),
StatusIs(Error::JSON_PARSER_UNEXPECTED_ARRAY_END, 5u));
EXPECT_EQ("", log_.str());
}
TEST_F(JsonParserTest, CommaOrArrayEndExpectedError) {
std::string json = "[1,2 2";
ParseJSON(SpanFrom(json), &log_);
EXPECT_THAT(log_.status(),
StatusIs(Error::JSON_PARSER_COMMA_OR_ARRAY_END_EXPECTED, 5u));
EXPECT_EQ("", log_.str());
}
TEST_F(JsonParserTest, StringLiteralExpectedError) {
// There's an error because the key bar, a string, is not terminated.
std::string json = "{\"foo\": 3.1415, \"bar: 31415e-4}";
ParseJSON(SpanFrom(json), &log_);
EXPECT_THAT(log_.status(),
StatusIs(Error::JSON_PARSER_STRING_LITERAL_EXPECTED, 16u));
EXPECT_EQ("", log_.str());
}
TEST_F(JsonParserTest, ColonExpectedError) {
std::string json = "{\"foo\", 42}";
ParseJSON(SpanFrom(json), &log_);
EXPECT_THAT(log_.status(), StatusIs(Error::JSON_PARSER_COLON_EXPECTED, 6u));
EXPECT_EQ("", log_.str());
}
TEST_F(JsonParserTest, UnexpectedMapEndError) {
std::string json = "{\"foo\": 42, }";
ParseJSON(SpanFrom(json), &log_);
EXPECT_THAT(log_.status(),
StatusIs(Error::JSON_PARSER_UNEXPECTED_MAP_END, 12u));
EXPECT_EQ("", log_.str());
}
TEST_F(JsonParserTest, CommaOrMapEndExpectedError) {
// The second separator should be a comma.
std::string json = "{\"foo\": 3.1415: \"bar\": 0}";
ParseJSON(SpanFrom(json), &log_);
EXPECT_THAT(log_.status(),
StatusIs(Error::JSON_PARSER_COMMA_OR_MAP_END_EXPECTED, 14u));
EXPECT_EQ("", log_.str());
}
TEST_F(JsonParserTest, ValueExpectedError) {
std::string json = "}";
ParseJSON(SpanFrom(json), &log_);
EXPECT_THAT(log_.status(), StatusIs(Error::JSON_PARSER_VALUE_EXPECTED, 0u));
EXPECT_EQ("", log_.str());
}
template <typename T>
class ConvertJSONToCBORTest : public ::testing::Test {};
using ContainerTestTypes = ::testing::Types<std::vector<uint8_t>, std::string>;
TYPED_TEST_SUITE(ConvertJSONToCBORTest, ContainerTestTypes);
TYPED_TEST(ConvertJSONToCBORTest, RoundTripValidJson) {
const std::array<std::string, 7> jsons = {{
"{\"msg\":\"Hello, world.\",\"lst\":[1,2,3]}",
"3.1415",
"false",
"true",
"\"Hello, world.\"",
"[1,2,3]",
"[]",
}};
for (const std::string& json_in : jsons) {
SCOPED_TRACE(json_in);
TypeParam json(json_in.begin(), json_in.end());
std::vector<uint8_t> cbor;
{
Status status = ConvertJSONToCBOR(SpanFrom(json), &cbor);
EXPECT_THAT(status, StatusIsOk());
}
TypeParam roundtrip_json;
{
Status status = ConvertCBORToJSON(SpanFrom(cbor), &roundtrip_json);
EXPECT_THAT(status, StatusIsOk());
}
EXPECT_EQ(json, roundtrip_json);
}
}
TYPED_TEST(ConvertJSONToCBORTest, RoundTripValidJson16) {
std::vector<uint16_t> json16 = {
'{', '"', 'm', 's', 'g', '"', ':', '"', 'H', 'e', 'l', 'l',
'o', ',', ' ', 0xd83c, 0xdf0e, '.', '"', ',', '"', 'l', 's', 't',
'"', ':', '[', '1', ',', '2', ',', '3', ']', '}'};
std::vector<uint8_t> cbor;
{
Status status =
ConvertJSONToCBOR(span<uint16_t>(json16.data(), json16.size()), &cbor);
EXPECT_THAT(status, StatusIsOk());
}
TypeParam roundtrip_json;
{
Status status = ConvertCBORToJSON(SpanFrom(cbor), &roundtrip_json);
EXPECT_THAT(status, StatusIsOk());
}
std::string json = "{\"msg\":\"Hello, \\ud83c\\udf0e.\",\"lst\":[1,2,3]}";
TypeParam expected_json(json.begin(), json.end());
EXPECT_EQ(expected_json, roundtrip_json);
}
} // namespace json
} // namespace v8_crdtp