summaryrefslogtreecommitdiff
path: root/core/fpdfapi/fpdf_parser/cpdf_object_unittest.cpp
blob: a77f022c405d732359c640f71222a274c8679832 (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
// Copyright 2016 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "core/fpdfapi/fpdf_parser/cpdf_boolean.h"
#include "core/fpdfapi/fpdf_parser/cpdf_null.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_name.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_number.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_reference.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_stream.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_string.h"

#include <memory>
#include <string>
#include <vector>

#include "core/fpdfapi/fpdf_parser/include/cpdf_indirect_object_holder.h"
#include "core/fxcrt/include/fx_basic.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace {

using ScopedArray = std::unique_ptr<CPDF_Array, ReleaseDeleter<CPDF_Array>>;

void TestArrayAccessors(const CPDF_Array* arr,
                        size_t index,
                        const char* str_val,
                        const char* const_str_val,
                        int int_val,
                        float float_val,
                        CPDF_Array* arr_val,
                        CPDF_Dictionary* dict_val,
                        CPDF_Stream* stream_val) {
  EXPECT_STREQ(str_val, arr->GetStringAt(index).c_str());
  EXPECT_EQ(int_val, arr->GetIntegerAt(index));
  EXPECT_EQ(float_val, arr->GetNumberAt(index));
  EXPECT_EQ(float_val, arr->GetFloatAt(index));
  EXPECT_EQ(arr_val, arr->GetArrayAt(index));
  EXPECT_EQ(dict_val, arr->GetDictAt(index));
  EXPECT_EQ(stream_val, arr->GetStreamAt(index));
}

}  // namespace

class PDFObjectsTest : public testing::Test {
 public:
  void SetUp() override {
    // Initialize different kinds of objects.
    // Boolean objects.
    CPDF_Boolean* boolean_false_obj = new CPDF_Boolean(false);
    CPDF_Boolean* boolean_true_obj = new CPDF_Boolean(true);
    // Number objects.
    CPDF_Number* number_int_obj = new CPDF_Number(1245);
    CPDF_Number* number_float_obj = new CPDF_Number(9.00345f);
    // String objects.
    CPDF_String* str_reg_obj = new CPDF_String(L"A simple test");
    CPDF_String* str_spec_obj = new CPDF_String(L"\t\n");
    // Name object.
    CPDF_Name* name_obj = new CPDF_Name("space");
    // Array object.
    m_ArrayObj = new CPDF_Array;
    m_ArrayObj->InsertAt(0, new CPDF_Number(8902));
    m_ArrayObj->InsertAt(1, new CPDF_Name("address"));
    // Dictionary object.
    m_DictObj = new CPDF_Dictionary;
    m_DictObj->SetAt("bool", new CPDF_Boolean(false));
    m_DictObj->SetAt("num", new CPDF_Number(0.23f));
    // Stream object.
    const char content[] = "abcdefghijklmnopqrstuvwxyz";
    size_t buf_len = FX_ArraySize(content);
    uint8_t* buf = reinterpret_cast<uint8_t*>(malloc(buf_len));
    memcpy(buf, content, buf_len);
    m_StreamDictObj = new CPDF_Dictionary;
    m_StreamDictObj->SetAt("key1", new CPDF_String(L" test dict"));
    m_StreamDictObj->SetAt("key2", new CPDF_Number(-1));
    CPDF_Stream* stream_obj = new CPDF_Stream(buf, buf_len, m_StreamDictObj);
    // Null Object.
    CPDF_Null* null_obj = new CPDF_Null;
    // All direct objects.
    CPDF_Object* objs[] = {boolean_false_obj, boolean_true_obj, number_int_obj,
                           number_float_obj,  str_reg_obj,      str_spec_obj,
                           name_obj,          m_ArrayObj,       m_DictObj,
                           stream_obj,        null_obj};
    m_DirectObjTypes = {
        CPDF_Object::BOOLEAN, CPDF_Object::BOOLEAN, CPDF_Object::NUMBER,
        CPDF_Object::NUMBER,  CPDF_Object::STRING,  CPDF_Object::STRING,
        CPDF_Object::NAME,    CPDF_Object::ARRAY,   CPDF_Object::DICTIONARY,
        CPDF_Object::STREAM,  CPDF_Object::NULLOBJ};
    for (size_t i = 0; i < FX_ArraySize(objs); ++i)
      m_DirectObjs.emplace_back(objs[i]);

    // Indirect references to indirect objects.
    m_ObjHolder.reset(new CPDF_IndirectObjectHolder(nullptr));
    m_IndirectObjs = {boolean_true_obj, number_int_obj, str_spec_obj, name_obj,
                      m_ArrayObj,       m_DictObj,      stream_obj};
    for (size_t i = 0; i < m_IndirectObjs.size(); ++i) {
      m_ObjHolder->AddIndirectObject(m_IndirectObjs[i]);
      m_RefObjs.emplace_back(new CPDF_Reference(
          m_ObjHolder.get(), m_IndirectObjs[i]->GetObjNum()));
    }
  }

  bool Equal(CPDF_Object* obj1, CPDF_Object* obj2) {
    if (obj1 == obj2)
      return true;
    if (!obj1 || !obj2 || obj1->GetType() != obj2->GetType())
      return false;
    switch (obj1->GetType()) {
      case CPDF_Object::BOOLEAN:
        return obj1->GetInteger() == obj2->GetInteger();
      case CPDF_Object::NUMBER:
        return obj1->AsNumber()->IsInteger() == obj2->AsNumber()->IsInteger() &&
               obj1->GetInteger() == obj2->GetInteger();
      case CPDF_Object::STRING:
      case CPDF_Object::NAME:
        return obj1->GetString() == obj2->GetString();
      case CPDF_Object::ARRAY: {
        const CPDF_Array* array1 = obj1->AsArray();
        const CPDF_Array* array2 = obj2->AsArray();
        if (array1->GetCount() != array2->GetCount())
          return false;
        for (size_t i = 0; i < array1->GetCount(); ++i) {
          if (!Equal(array1->GetObjectAt(i), array2->GetObjectAt(i)))
            return false;
        }
        return true;
      }
      case CPDF_Object::DICTIONARY: {
        const CPDF_Dictionary* dict1 = obj1->AsDictionary();
        const CPDF_Dictionary* dict2 = obj2->AsDictionary();
        if (dict1->GetCount() != dict2->GetCount())
          return false;
        for (CPDF_Dictionary::const_iterator it = dict1->begin();
             it != dict1->end(); ++it) {
          if (!Equal(it->second, dict2->GetObjectBy(it->first)))
            return false;
        }
        return true;
      }
      case CPDF_Object::NULLOBJ:
        return true;
      case CPDF_Object::STREAM: {
        const CPDF_Stream* stream1 = obj1->AsStream();
        const CPDF_Stream* stream2 = obj2->AsStream();
        if (!stream1->GetDict() && !stream2->GetDict())
          return true;
        // Compare dictionaries.
        if (!Equal(stream1->GetDict(), stream2->GetDict()))
          return false;
        // Compare sizes.
        if (stream1->GetRawSize() != stream2->GetRawSize())
          return false;
        // Compare contents.
        // Since this function is used for testing Clone(), only memory based
        // streams need to be handled.
        if (!stream1->IsMemoryBased() || !stream2->IsMemoryBased())
          return false;
        return FXSYS_memcmp(stream1->GetRawData(), stream2->GetRawData(),
                            stream1->GetRawSize()) == 0;
      }
      case CPDF_Object::REFERENCE:
        return obj1->AsReference()->GetRefObjNum() ==
               obj2->AsReference()->GetRefObjNum();
    }
    return false;
  }

 protected:
  using ScopedObj = std::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>>;

  // m_ObjHolder needs to be declared first and destructed last since it also
  // refers to some objects in m_DirectObjs.
  std::unique_ptr<CPDF_IndirectObjectHolder> m_ObjHolder;
  std::vector<ScopedObj> m_DirectObjs;
  std::vector<int> m_DirectObjTypes;
  std::vector<ScopedObj> m_RefObjs;
  CPDF_Dictionary* m_DictObj;
  CPDF_Dictionary* m_StreamDictObj;
  CPDF_Array* m_ArrayObj;
  std::vector<CPDF_Object*> m_IndirectObjs;
};

TEST_F(PDFObjectsTest, GetString) {
  const char* const direct_obj_results[] = {
      "false", "true", "1245", "9.00345", "A simple test", "\t\n", "space",
      "",      "",     "",     ""};
  // Check for direct objects.
  for (size_t i = 0; i < m_DirectObjs.size(); ++i)
    EXPECT_STREQ(direct_obj_results[i], m_DirectObjs[i]->GetString().c_str());

  // Check indirect references.
  const char* const indirect_obj_results[] = {"true", "1245", "\t\n", "space",
                                              "",     "",     ""};
  for (size_t i = 0; i < m_RefObjs.size(); ++i) {
    EXPECT_STREQ(indirect_obj_results[i], m_RefObjs[i]->GetString().c_str());
  }
}

TEST_F(PDFObjectsTest, GetUnicodeText) {
  const wchar_t* const direct_obj_results[] = {
      L"",     L"",      L"", L"", L"A simple test",
      L"\t\n", L"space", L"", L"", L"abcdefghijklmnopqrstuvwxyz",
      L""};
  // Check for direct objects.
  for (size_t i = 0; i < m_DirectObjs.size(); ++i) {
    EXPECT_STREQ(direct_obj_results[i],
                 m_DirectObjs[i]->GetUnicodeText().c_str());
  }

  // Check indirect references.
  for (const auto& it : m_RefObjs)
    EXPECT_STREQ(L"", it->GetUnicodeText().c_str());
}

TEST_F(PDFObjectsTest, GetNumber) {
  const FX_FLOAT direct_obj_results[] = {0, 0, 1245, 9.00345f, 0, 0,
                                         0, 0, 0,    0,        0};
  // Check for direct objects.
  for (size_t i = 0; i < m_DirectObjs.size(); ++i)
    EXPECT_EQ(direct_obj_results[i], m_DirectObjs[i]->GetNumber());

  // Check indirect references.
  const FX_FLOAT indirect_obj_results[] = {0, 1245, 0, 0, 0, 0, 0};
  for (size_t i = 0; i < m_RefObjs.size(); ++i)
    EXPECT_EQ(indirect_obj_results[i], m_RefObjs[i]->GetNumber());
}

TEST_F(PDFObjectsTest, GetInteger) {
  const int direct_obj_results[] = {0, 1, 1245, 9, 0, 0, 0, 0, 0, 0, 0};
  // Check for direct objects.
  for (size_t i = 0; i < m_DirectObjs.size(); ++i)
    EXPECT_EQ(direct_obj_results[i], m_DirectObjs[i]->GetInteger());

  // Check indirect references.
  const int indirect_obj_results[] = {1, 1245, 0, 0, 0, 0, 0};
  for (size_t i = 0; i < m_RefObjs.size(); ++i)
    EXPECT_EQ(indirect_obj_results[i], m_RefObjs[i]->GetInteger());
}

TEST_F(PDFObjectsTest, GetDict) {
  const CPDF_Dictionary* const direct_obj_results[] = {
      nullptr, nullptr, nullptr,   nullptr,         nullptr, nullptr,
      nullptr, nullptr, m_DictObj, m_StreamDictObj, nullptr};
  // Check for direct objects.
  for (size_t i = 0; i < m_DirectObjs.size(); ++i)
    EXPECT_EQ(direct_obj_results[i], m_DirectObjs[i]->GetDict());

  // Check indirect references.
  const CPDF_Dictionary* const indirect_obj_results[] = {
      nullptr, nullptr, nullptr, nullptr, nullptr, m_DictObj, m_StreamDictObj};
  for (size_t i = 0; i < m_RefObjs.size(); ++i)
    EXPECT_EQ(indirect_obj_results[i], m_RefObjs[i]->GetDict());
}

TEST_F(PDFObjectsTest, GetArray) {
  const CPDF_Array* const direct_obj_results[] = {
      nullptr, nullptr,    nullptr, nullptr, nullptr, nullptr,
      nullptr, m_ArrayObj, nullptr, nullptr, nullptr};
  // Check for direct objects.
  for (size_t i = 0; i < m_DirectObjs.size(); ++i)
    EXPECT_EQ(direct_obj_results[i], m_DirectObjs[i]->AsArray());

  // Check indirect references.
  for (const auto& it : m_RefObjs)
    EXPECT_EQ(nullptr, it->AsArray());
}

TEST_F(PDFObjectsTest, Clone) {
  // Check for direct objects.
  for (size_t i = 0; i < m_DirectObjs.size(); ++i) {
    ScopedObj obj(m_DirectObjs[i]->Clone());
    EXPECT_TRUE(Equal(m_DirectObjs[i].get(), obj.get()));
  }

  // Check indirect references.
  for (const auto& it : m_RefObjs) {
    ScopedObj obj(it->Clone());
    EXPECT_TRUE(Equal(it.get(), obj.get()));
  }
}

TEST_F(PDFObjectsTest, GetType) {
  // Check for direct objects.
  for (size_t i = 0; i < m_DirectObjs.size(); ++i)
    EXPECT_EQ(m_DirectObjTypes[i], m_DirectObjs[i]->GetType());

  // Check indirect references.
  for (const auto& it : m_RefObjs)
    EXPECT_EQ(CPDF_Object::REFERENCE, it->GetType());
}

TEST_F(PDFObjectsTest, GetDirect) {
  // Check for direct objects.
  for (size_t i = 0; i < m_DirectObjs.size(); ++i)
    EXPECT_EQ(m_DirectObjs[i].get(), m_DirectObjs[i]->GetDirect());

  // Check indirect references.
  for (size_t i = 0; i < m_RefObjs.size(); ++i)
    EXPECT_EQ(m_IndirectObjs[i], m_RefObjs[i]->GetDirect());
}

TEST_F(PDFObjectsTest, SetString) {
  // Check for direct objects.
  const char* const set_values[] = {"true",    "fake", "3.125f", "097",
                                    "changed", "",     "NewName"};
  const char* const expected[] = {"true",    "false", "3.125",  "97",
                                  "changed", "",      "NewName"};
  for (size_t i = 0; i < FX_ArraySize(set_values); ++i) {
    m_DirectObjs[i]->SetString(set_values[i]);
    EXPECT_STREQ(expected[i], m_DirectObjs[i]->GetString().c_str());
  }
}

TEST_F(PDFObjectsTest, IsTypeAndAsType) {
  // Check for direct objects.
  for (size_t i = 0; i < m_DirectObjs.size(); ++i) {
    if (m_DirectObjTypes[i] == CPDF_Object::ARRAY) {
      EXPECT_TRUE(m_DirectObjs[i]->IsArray());
      EXPECT_EQ(m_DirectObjs[i].get(), m_DirectObjs[i]->AsArray());
    } else {
      EXPECT_FALSE(m_DirectObjs[i]->IsArray());
      EXPECT_EQ(nullptr, m_DirectObjs[i]->AsArray());
    }

    if (m_DirectObjTypes[i] == CPDF_Object::BOOLEAN) {
      EXPECT_TRUE(m_DirectObjs[i]->IsBoolean());
      EXPECT_EQ(m_DirectObjs[i].get(), m_DirectObjs[i]->AsBoolean());
    } else {
      EXPECT_FALSE(m_DirectObjs[i]->IsBoolean());
      EXPECT_EQ(nullptr, m_DirectObjs[i]->AsBoolean());
    }

    if (m_DirectObjTypes[i] == CPDF_Object::NAME) {
      EXPECT_TRUE(m_DirectObjs[i]->IsName());
      EXPECT_EQ(m_DirectObjs[i].get(), m_DirectObjs[i]->AsName());
    } else {
      EXPECT_FALSE(m_DirectObjs[i]->IsName());
      EXPECT_EQ(nullptr, m_DirectObjs[i]->AsName());
    }

    if (m_DirectObjTypes[i] == CPDF_Object::NUMBER) {
      EXPECT_TRUE(m_DirectObjs[i]->IsNumber());
      EXPECT_EQ(m_DirectObjs[i].get(), m_DirectObjs[i]->AsNumber());
    } else {
      EXPECT_FALSE(m_DirectObjs[i]->IsNumber());
      EXPECT_EQ(nullptr, m_DirectObjs[i]->AsNumber());
    }

    if (m_DirectObjTypes[i] == CPDF_Object::STRING) {
      EXPECT_TRUE(m_DirectObjs[i]->IsString());
      EXPECT_EQ(m_DirectObjs[i].get(), m_DirectObjs[i]->AsString());
    } else {
      EXPECT_FALSE(m_DirectObjs[i]->IsString());
      EXPECT_EQ(nullptr, m_DirectObjs[i]->AsString());
    }

    if (m_DirectObjTypes[i] == CPDF_Object::DICTIONARY) {
      EXPECT_TRUE(m_DirectObjs[i]->IsDictionary());
      EXPECT_EQ(m_DirectObjs[i].get(), m_DirectObjs[i]->AsDictionary());
    } else {
      EXPECT_FALSE(m_DirectObjs[i]->IsDictionary());
      EXPECT_EQ(nullptr, m_DirectObjs[i]->AsDictionary());
    }

    if (m_DirectObjTypes[i] == CPDF_Object::STREAM) {
      EXPECT_TRUE(m_DirectObjs[i]->IsStream());
      EXPECT_EQ(m_DirectObjs[i].get(), m_DirectObjs[i]->AsStream());
    } else {
      EXPECT_FALSE(m_DirectObjs[i]->IsStream());
      EXPECT_EQ(nullptr, m_DirectObjs[i]->AsStream());
    }

    EXPECT_FALSE(m_DirectObjs[i]->IsReference());
    EXPECT_EQ(nullptr, m_DirectObjs[i]->AsReference());
  }
  // Check indirect references.
  for (size_t i = 0; i < m_RefObjs.size(); ++i) {
    EXPECT_TRUE(m_RefObjs[i]->IsReference());
    EXPECT_EQ(m_RefObjs[i].get(), m_RefObjs[i]->AsReference());
  }
}

TEST(PDFArrayTest, GetMatrix) {
  float elems[][6] = {{0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f},
                      {1, 2, 3, 4, 5, 6},
                      {2.3f, 4.05f, 3, -2, -3, 0.0f},
                      {0.05f, 0.1f, 0.56f, 0.67f, 1.34f, 99.9f}};
  for (size_t i = 0; i < FX_ArraySize(elems); ++i) {
    ScopedArray arr(new CPDF_Array);
    CFX_Matrix matrix(elems[i][0], elems[i][1], elems[i][2], elems[i][3],
                      elems[i][4], elems[i][5]);
    for (size_t j = 0; j < 6; ++j)
      arr->AddNumber(elems[i][j]);
    CFX_Matrix arr_matrix = arr->GetMatrix();
    EXPECT_EQ(matrix.GetA(), arr_matrix.GetA());
    EXPECT_EQ(matrix.GetB(), arr_matrix.GetB());
    EXPECT_EQ(matrix.GetC(), arr_matrix.GetC());
    EXPECT_EQ(matrix.GetD(), arr_matrix.GetD());
    EXPECT_EQ(matrix.GetE(), arr_matrix.GetE());
    EXPECT_EQ(matrix.GetF(), arr_matrix.GetF());
  }
}

TEST(PDFArrayTest, GetRect) {
  float elems[][4] = {{0.0f, 0.0f, 0.0f, 0.0f},
                      {1, 2, 5, 6},
                      {2.3f, 4.05f, -3, 0.0f},
                      {0.05f, 0.1f, 1.34f, 99.9f}};
  for (size_t i = 0; i < FX_ArraySize(elems); ++i) {
    ScopedArray arr(new CPDF_Array);
    CFX_FloatRect rect(elems[i]);
    for (size_t j = 0; j < 4; ++j)
      arr->AddNumber(elems[i][j]);
    CFX_FloatRect arr_rect = arr->GetRect();
    EXPECT_EQ(rect.left, arr_rect.left);
    EXPECT_EQ(rect.right, arr_rect.right);
    EXPECT_EQ(rect.bottom, arr_rect.bottom);
    EXPECT_EQ(rect.top, arr_rect.top);
  }
}

TEST(PDFArrayTest, GetTypeAt) {
  {
    // Boolean array.
    const bool vals[] = {true, false, false, true, true};
    ScopedArray arr(new CPDF_Array);
    for (size_t i = 0; i < FX_ArraySize(vals); ++i)
      arr->InsertAt(i, new CPDF_Boolean(vals[i]));
    for (size_t i = 0; i < FX_ArraySize(vals); ++i) {
      TestArrayAccessors(arr.get(), i,                // Array and index.
                         vals[i] ? "true" : "false",  // String value.
                         nullptr,                     // Const string value.
                         vals[i] ? 1 : 0,             // Integer value.
                         0,                           // Float value.
                         nullptr,                     // Array value.
                         nullptr,                     // Dictionary value.
                         nullptr);                    // Stream value.
    }
  }
  {
    // Integer array.
    const int vals[] = {10, 0, -345, 2089345456, -1000000000, 567, 93658767};
    ScopedArray arr(new CPDF_Array);
    for (size_t i = 0; i < FX_ArraySize(vals); ++i)
      arr->InsertAt(i, new CPDF_Number(vals[i]));
    for (size_t i = 0; i < FX_ArraySize(vals); ++i) {
      char buf[33];
      TestArrayAccessors(arr.get(), i,                  // Array and index.
                         FXSYS_itoa(vals[i], buf, 10),  // String value.
                         nullptr,                       // Const string value.
                         vals[i],                       // Integer value.
                         vals[i],                       // Float value.
                         nullptr,                       // Array value.
                         nullptr,                       // Dictionary value.
                         nullptr);                      // Stream value.
    }
  }
  {
    // Float array.
    const float vals[] = {0.0f,    0,     10,    10.0f,   0.0345f,
                          897.34f, -2.5f, -1.0f, -345.0f, -0.0f};
    const char* const expected_str[] = {
        "0", "0", "10", "10", "0.0345", "897.34", "-2.5", "-1", "-345", "0"};
    ScopedArray arr(new CPDF_Array);
    for (size_t i = 0; i < FX_ArraySize(vals); ++i) {
      arr->InsertAt(i, new CPDF_Number(vals[i]));
    }
    for (size_t i = 0; i < FX_ArraySize(vals); ++i) {
      TestArrayAccessors(arr.get(), i,     // Array and index.
                         expected_str[i],  // String value.
                         nullptr,          // Const string value.
                         vals[i],          // Integer value.
                         vals[i],          // Float value.
                         nullptr,          // Array value.
                         nullptr,          // Dictionary value.
                         nullptr);         // Stream value.
    }
  }
  {
    // String and name array
    const char* const vals[] = {"this", "adsde$%^", "\r\t",           "\"012",
                                ".",    "EYREW",    "It is a joke :)"};
    ScopedArray string_array(new CPDF_Array);
    ScopedArray name_array(new CPDF_Array);
    for (size_t i = 0; i < FX_ArraySize(vals); ++i) {
      string_array->InsertAt(i, new CPDF_String(vals[i], false));
      name_array->InsertAt(i, new CPDF_Name(vals[i]));
    }
    for (size_t i = 0; i < FX_ArraySize(vals); ++i) {
      TestArrayAccessors(string_array.get(), i,  // Array and index.
                         vals[i],                // String value.
                         vals[i],                // Const string value.
                         0,                      // Integer value.
                         0,                      // Float value.
                         nullptr,                // Array value.
                         nullptr,                // Dictionary value.
                         nullptr);               // Stream value.
      TestArrayAccessors(name_array.get(), i,    // Array and index.
                         vals[i],                // String value.
                         vals[i],                // Const string value.
                         0,                      // Integer value.
                         0,                      // Float value.
                         nullptr,                // Array value.
                         nullptr,                // Dictionary value.
                         nullptr);               // Stream value.
    }
  }
  {
    // Null element array.
    ScopedArray arr(new CPDF_Array);
    for (size_t i = 0; i < 3; ++i)
      arr->InsertAt(i, new CPDF_Null);
    for (size_t i = 0; i < 3; ++i) {
      TestArrayAccessors(arr.get(), i,  // Array and index.
                         "",            // String value.
                         nullptr,       // Const string value.
                         0,             // Integer value.
                         0,             // Float value.
                         nullptr,       // Array value.
                         nullptr,       // Dictionary value.
                         nullptr);      // Stream value.
    }
  }
  {
    // Array of array.
    CPDF_Array* vals[3];
    ScopedArray arr(new CPDF_Array);
    for (size_t i = 0; i < 3; ++i) {
      vals[i] = new CPDF_Array;
      for (size_t j = 0; j < 3; ++j) {
        int value = j + 100;
        vals[i]->InsertAt(i, new CPDF_Number(value));
      }
      arr->InsertAt(i, vals[i]);
    }
    for (size_t i = 0; i < 3; ++i) {
      TestArrayAccessors(arr.get(), i,  // Array and index.
                         "",            // String value.
                         nullptr,       // Const string value.
                         0,             // Integer value.
                         0,             // Float value.
                         vals[i],       // Array value.
                         nullptr,       // Dictionary value.
                         nullptr);      // Stream value.
    }
  }
  {
    // Dictionary array.
    CPDF_Dictionary* vals[3];
    ScopedArray arr(new CPDF_Array);
    for (size_t i = 0; i < 3; ++i) {
      vals[i] = new CPDF_Dictionary;
      for (size_t j = 0; j < 3; ++j) {
        std::string key("key");
        char buf[33];
        key.append(FXSYS_itoa(j, buf, 10));
        int value = j + 200;
        vals[i]->SetAt(key.c_str(), new CPDF_Number(value));
      }
      arr->InsertAt(i, vals[i]);
    }
    for (size_t i = 0; i < 3; ++i) {
      TestArrayAccessors(arr.get(), i,  // Array and index.
                         "",            // String value.
                         nullptr,       // Const string value.
                         0,             // Integer value.
                         0,             // Float value.
                         nullptr,       // Array value.
                         vals[i],       // Dictionary value.
                         nullptr);      // Stream value.
    }
  }
  {
    // Stream array.
    CPDF_Dictionary* vals[3];
    CPDF_Stream* stream_vals[3];
    ScopedArray arr(new CPDF_Array);
    for (size_t i = 0; i < 3; ++i) {
      vals[i] = new CPDF_Dictionary;
      for (size_t j = 0; j < 3; ++j) {
        std::string key("key");
        char buf[33];
        key.append(FXSYS_itoa(j, buf, 10));
        int value = j + 200;
        vals[i]->SetAt(key.c_str(), new CPDF_Number(value));
      }
      uint8_t content[] = "content: this is a stream";
      size_t data_size = FX_ArraySize(content);
      uint8_t* data = reinterpret_cast<uint8_t*>(malloc(data_size));
      memcpy(data, content, data_size);
      stream_vals[i] = new CPDF_Stream(data, data_size, vals[i]);
      arr->InsertAt(i, stream_vals[i]);
    }
    for (size_t i = 0; i < 3; ++i) {
      TestArrayAccessors(arr.get(), i,     // Array and index.
                         "",               // String value.
                         nullptr,          // Const string value.
                         0,                // Integer value.
                         0,                // Float value.
                         nullptr,          // Array value.
                         vals[i],          // Dictionary value.
                         stream_vals[i]);  // Stream value.
    }
  }
  {
    // Mixed array.
    ScopedArray arr(new CPDF_Array);
    // Array arr will take ownership of all the objects inserted.
    arr->InsertAt(0, new CPDF_Boolean(true));
    arr->InsertAt(1, new CPDF_Boolean(false));
    arr->InsertAt(2, new CPDF_Number(0));
    arr->InsertAt(3, new CPDF_Number(-1234));
    arr->InsertAt(4, new CPDF_Number(2345.0f));
    arr->InsertAt(5, new CPDF_Number(0.05f));
    arr->InsertAt(6, new CPDF_String("", false));
    arr->InsertAt(7, new CPDF_String("It is a test!", false));
    arr->InsertAt(8, new CPDF_Name("NAME"));
    arr->InsertAt(9, new CPDF_Name("test"));
    arr->InsertAt(10, new CPDF_Null());
    CPDF_Array* arr_val = new CPDF_Array;
    arr_val->AddNumber(1);
    arr_val->AddNumber(2);
    arr->InsertAt(11, arr_val);
    CPDF_Dictionary* dict_val = new CPDF_Dictionary;
    dict_val->SetAt("key1", new CPDF_String("Linda", false));
    dict_val->SetAt("key2", new CPDF_String("Zoe", false));
    arr->InsertAt(12, dict_val);
    CPDF_Dictionary* stream_dict = new CPDF_Dictionary;
    stream_dict->SetAt("key1", new CPDF_String("John", false));
    stream_dict->SetAt("key2", new CPDF_String("King", false));
    uint8_t data[] = "A stream for test";
    // The data buffer will be owned by stream object, so it needs to be
    // dynamically allocated.
    size_t buf_size = sizeof(data);
    uint8_t* buf = reinterpret_cast<uint8_t*>(malloc(buf_size));
    memcpy(buf, data, buf_size);
    CPDF_Stream* stream_val = new CPDF_Stream(buf, buf_size, stream_dict);
    arr->InsertAt(13, stream_val);
    const char* const expected_str[] = {
        "true",          "false", "0",    "-1234", "2345", "0.05", "",
        "It is a test!", "NAME",  "test", "",      "",     "",     ""};
    const int expected_int[] = {1, 0, 0, -1234, 2345, 0, 0,
                                0, 0, 0, 0,     0,    0, 0};
    const float expected_float[] = {0, 0, 0, -1234, 2345, 0.05f, 0,
                                    0, 0, 0, 0,     0,    0,     0};
    for (size_t i = 0; i < arr->GetCount(); ++i) {
      EXPECT_STREQ(expected_str[i], arr->GetStringAt(i).c_str());
      EXPECT_EQ(expected_int[i], arr->GetIntegerAt(i));
      EXPECT_EQ(expected_float[i], arr->GetNumberAt(i));
      EXPECT_EQ(expected_float[i], arr->GetFloatAt(i));
      if (i == 11)
        EXPECT_EQ(arr_val, arr->GetArrayAt(i));
      else
        EXPECT_EQ(nullptr, arr->GetArrayAt(i));
      if (i == 13) {
        EXPECT_EQ(stream_dict, arr->GetDictAt(i));
        EXPECT_EQ(stream_val, arr->GetStreamAt(i));
      } else {
        EXPECT_EQ(nullptr, arr->GetStreamAt(i));
        if (i == 12)
          EXPECT_EQ(dict_val, arr->GetDictAt(i));
        else
          EXPECT_EQ(nullptr, arr->GetDictAt(i));
      }
    }
  }
}

TEST(PDFArrayTest, AddNumber) {
  float vals[] = {1.0f,         -1.0f, 0,    0.456734f,
                  12345.54321f, 0.5f,  1000, 0.000045f};
  ScopedArray arr(new CPDF_Array);
  for (size_t i = 0; i < FX_ArraySize(vals); ++i)
    arr->AddNumber(vals[i]);
  for (size_t i = 0; i < FX_ArraySize(vals); ++i) {
    EXPECT_EQ(CPDF_Object::NUMBER, arr->GetObjectAt(i)->GetType());
    EXPECT_EQ(vals[i], arr->GetObjectAt(i)->GetNumber());
  }
}

TEST(PDFArrayTest, AddInteger) {
  int vals[] = {0, 1, 934435456, 876, 10000, -1, -24354656, -100};
  ScopedArray arr(new CPDF_Array);
  for (size_t i = 0; i < FX_ArraySize(vals); ++i)
    arr->AddInteger(vals[i]);
  for (size_t i = 0; i < FX_ArraySize(vals); ++i) {
    EXPECT_EQ(CPDF_Object::NUMBER, arr->GetObjectAt(i)->GetType());
    EXPECT_EQ(vals[i], arr->GetObjectAt(i)->GetNumber());
  }
}

TEST(PDFArrayTest, AddStringAndName) {
  const char* vals[] = {"",        "a", "ehjhRIOYTTFdfcdnv",  "122323",
                        "$#%^&**", " ", "This is a test.\r\n"};
  ScopedArray string_array(new CPDF_Array);
  ScopedArray name_array(new CPDF_Array);
  for (size_t i = 0; i < FX_ArraySize(vals); ++i) {
    string_array->AddString(vals[i]);
    name_array->AddName(vals[i]);
  }
  for (size_t i = 0; i < FX_ArraySize(vals); ++i) {
    EXPECT_EQ(CPDF_Object::STRING, string_array->GetObjectAt(i)->GetType());
    EXPECT_STREQ(vals[i], string_array->GetObjectAt(i)->GetString().c_str());
    EXPECT_EQ(CPDF_Object::NAME, name_array->GetObjectAt(i)->GetType());
    EXPECT_STREQ(vals[i], name_array->GetObjectAt(i)->GetString().c_str());
  }
}

TEST(PDFArrayTest, AddReferenceAndGetObjectAt) {
  std::unique_ptr<CPDF_IndirectObjectHolder> holder(
      new CPDF_IndirectObjectHolder(nullptr));
  CPDF_Boolean* boolean_obj = new CPDF_Boolean(true);
  CPDF_Number* int_obj = new CPDF_Number(-1234);
  CPDF_Number* float_obj = new CPDF_Number(2345.089f);
  CPDF_String* str_obj = new CPDF_String("Adsfdsf 343434 %&&*\n", false);
  CPDF_Name* name_obj = new CPDF_Name("Title:");
  CPDF_Null* null_obj = new CPDF_Null();
  CPDF_Object* indirect_objs[] = {boolean_obj, int_obj,  float_obj,
                                  str_obj,     name_obj, null_obj};
  unsigned int obj_nums[] = {2, 4, 7, 2345, 799887, 1};
  ScopedArray arr(new CPDF_Array);
  ScopedArray arr1(new CPDF_Array);
  // Create two arrays of references by different AddReference() APIs.
  for (size_t i = 0; i < FX_ArraySize(indirect_objs); ++i) {
    // All the indirect objects inserted will be owned by holder.
    holder->InsertIndirectObject(obj_nums[i], indirect_objs[i]);
    arr->AddReference(holder.get(), obj_nums[i]);
    arr1->AddReference(holder.get(), indirect_objs[i]);
  }
  // Check indirect objects.
  for (size_t i = 0; i < FX_ArraySize(obj_nums); ++i)
    EXPECT_EQ(indirect_objs[i], holder->GetIndirectObject(obj_nums[i]));
  // Check arrays.
  EXPECT_EQ(arr->GetCount(), arr1->GetCount());
  for (size_t i = 0; i < arr->GetCount(); ++i) {
    EXPECT_EQ(CPDF_Object::REFERENCE, arr->GetObjectAt(i)->GetType());
    EXPECT_EQ(indirect_objs[i], arr->GetObjectAt(i)->GetDirect());
    EXPECT_EQ(indirect_objs[i], arr->GetDirectObjectAt(i));
    EXPECT_EQ(CPDF_Object::REFERENCE, arr1->GetObjectAt(i)->GetType());
    EXPECT_EQ(indirect_objs[i], arr1->GetObjectAt(i)->GetDirect());
    EXPECT_EQ(indirect_objs[i], arr1->GetDirectObjectAt(i));
  }
}