Reader32Test.cpp 3.5 KB

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  1. /*
  2. * Copyright 2011 Google Inc.
  3. *
  4. * Use of this source code is governed by a BSD-style license that can be
  5. * found in the LICENSE file.
  6. */
  7. #include "src/core/SkReader32.h"
  8. #include "tests/Test.h"
  9. static void assert_eof(skiatest::Reporter* reporter, const SkReader32& reader) {
  10. REPORTER_ASSERT(reporter, reader.eof());
  11. REPORTER_ASSERT(reporter, reader.size() == reader.offset());
  12. REPORTER_ASSERT(reporter, (const char*)reader.peek() ==
  13. (const char*)reader.base() + reader.size());
  14. }
  15. static void assert_start(skiatest::Reporter* reporter, const SkReader32& reader) {
  16. REPORTER_ASSERT(reporter, 0 == reader.offset());
  17. REPORTER_ASSERT(reporter, reader.size() == reader.available());
  18. REPORTER_ASSERT(reporter, reader.isAvailable(reader.size()));
  19. REPORTER_ASSERT(reporter, !reader.isAvailable(reader.size() + 1));
  20. REPORTER_ASSERT(reporter, reader.peek() == reader.base());
  21. }
  22. static void assert_empty(skiatest::Reporter* reporter, const SkReader32& reader) {
  23. REPORTER_ASSERT(reporter, 0 == reader.size());
  24. REPORTER_ASSERT(reporter, 0 == reader.offset());
  25. REPORTER_ASSERT(reporter, 0 == reader.available());
  26. REPORTER_ASSERT(reporter, !reader.isAvailable(1));
  27. assert_eof(reporter, reader);
  28. assert_start(reporter, reader);
  29. }
  30. DEF_TEST(Reader32, reporter) {
  31. SkReader32 reader;
  32. assert_empty(reporter, reader);
  33. REPORTER_ASSERT(reporter, nullptr == reader.base());
  34. REPORTER_ASSERT(reporter, nullptr == reader.peek());
  35. size_t i;
  36. const int32_t data[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
  37. const SkScalar data2[] = { 0, SK_Scalar1, -SK_Scalar1, SK_Scalar1/2 };
  38. const size_t bufsize = sizeof(data) > sizeof(data2) ?
  39. sizeof(data) : sizeof(data2);
  40. char buffer[bufsize];
  41. reader.setMemory(data, sizeof(data));
  42. for (i = 0; i < SK_ARRAY_COUNT(data); ++i) {
  43. REPORTER_ASSERT(reporter, sizeof(data) == reader.size());
  44. REPORTER_ASSERT(reporter, i*4 == reader.offset());
  45. REPORTER_ASSERT(reporter, (const void*)data == reader.base());
  46. REPORTER_ASSERT(reporter, (const void*)&data[i] == reader.peek());
  47. REPORTER_ASSERT(reporter, data[i] == reader.readInt());
  48. }
  49. assert_eof(reporter, reader);
  50. reader.rewind();
  51. assert_start(reporter, reader);
  52. reader.read(buffer, sizeof(data));
  53. REPORTER_ASSERT(reporter, !memcmp(data, buffer, sizeof(data)));
  54. reader.setMemory(data2, sizeof(data2));
  55. for (i = 0; i < SK_ARRAY_COUNT(data2); ++i) {
  56. REPORTER_ASSERT(reporter, sizeof(data2) == reader.size());
  57. REPORTER_ASSERT(reporter, i*4 == reader.offset());
  58. REPORTER_ASSERT(reporter, (const void*)data2 == reader.base());
  59. REPORTER_ASSERT(reporter, (const void*)&data2[i] == reader.peek());
  60. REPORTER_ASSERT(reporter, data2[i] == reader.readScalar());
  61. }
  62. assert_eof(reporter, reader);
  63. reader.rewind();
  64. assert_start(reporter, reader);
  65. reader.read(buffer, sizeof(data2));
  66. REPORTER_ASSERT(reporter, !memcmp(data2, buffer, sizeof(data2)));
  67. reader.setMemory(nullptr, 0);
  68. assert_empty(reporter, reader);
  69. REPORTER_ASSERT(reporter, nullptr == reader.base());
  70. REPORTER_ASSERT(reporter, nullptr == reader.peek());
  71. // need to handle read(null, 0) and not get undefined behavior from memcpy
  72. {
  73. char storage[100];
  74. reader.setMemory(storage, sizeof(storage));
  75. char buffer[10];
  76. reader.read(buffer, 0); // easy case, since we pass a ptr
  77. reader.read(nullptr, 0); // undef case, read() can't blindly call memcpy
  78. }
  79. }