sys_byteorder_unittest.cc 3.8 KB

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  1. // Copyright (c) 2016 The Chromium Authors. All rights reserved.
  2. // Use of this source code is governed by a BSD-style license that can be
  3. // found in the LICENSE file.
  4. #include "base/sys_byteorder.h"
  5. #include <stdint.h>
  6. #include "build/build_config.h"
  7. #include "testing/gtest/include/gtest/gtest.h"
  8. namespace {
  9. const uint16_t k16BitTestData = 0xaabb;
  10. const uint16_t k16BitSwappedTestData = 0xbbaa;
  11. const uint32_t k32BitTestData = 0xaabbccdd;
  12. const uint32_t k32BitSwappedTestData = 0xddccbbaa;
  13. const uint64_t k64BitTestData = 0xaabbccdd44332211;
  14. const uint64_t k64BitSwappedTestData = 0x11223344ddccbbaa;
  15. } // namespace
  16. TEST(ByteOrderTest, ByteSwap16) {
  17. uint16_t swapped = base::ByteSwap(k16BitTestData);
  18. EXPECT_EQ(k16BitSwappedTestData, swapped);
  19. uint16_t reswapped = base::ByteSwap(swapped);
  20. EXPECT_EQ(k16BitTestData, reswapped);
  21. }
  22. TEST(ByteOrderTest, ByteSwap32) {
  23. uint32_t swapped = base::ByteSwap(k32BitTestData);
  24. EXPECT_EQ(k32BitSwappedTestData, swapped);
  25. uint32_t reswapped = base::ByteSwap(swapped);
  26. EXPECT_EQ(k32BitTestData, reswapped);
  27. }
  28. TEST(ByteOrderTest, ByteSwap64) {
  29. uint64_t swapped = base::ByteSwap(k64BitTestData);
  30. EXPECT_EQ(k64BitSwappedTestData, swapped);
  31. uint64_t reswapped = base::ByteSwap(swapped);
  32. EXPECT_EQ(k64BitTestData, reswapped);
  33. }
  34. TEST(ByteOrderTest, ByteSwapUintPtrT) {
  35. #if defined(ARCH_CPU_64_BITS)
  36. const uintptr_t test_data = static_cast<uintptr_t>(k64BitTestData);
  37. const uintptr_t swapped_test_data =
  38. static_cast<uintptr_t>(k64BitSwappedTestData);
  39. #elif defined(ARCH_CPU_32_BITS)
  40. const uintptr_t test_data = static_cast<uintptr_t>(k32BitTestData);
  41. const uintptr_t swapped_test_data =
  42. static_cast<uintptr_t>(k32BitSwappedTestData);
  43. #else
  44. #error architecture not supported
  45. #endif
  46. uintptr_t swapped = base::ByteSwapUintPtrT(test_data);
  47. EXPECT_EQ(swapped_test_data, swapped);
  48. uintptr_t reswapped = base::ByteSwapUintPtrT(swapped);
  49. EXPECT_EQ(test_data, reswapped);
  50. }
  51. TEST(ByteOrderTest, ByteSwapToLE16) {
  52. uint16_t le = base::ByteSwapToLE16(k16BitTestData);
  53. #if defined(ARCH_CPU_LITTLE_ENDIAN)
  54. EXPECT_EQ(k16BitTestData, le);
  55. #else
  56. EXPECT_EQ(k16BitSwappedTestData, le);
  57. #endif
  58. }
  59. TEST(ByteOrderTest, ByteSwapToLE32) {
  60. uint32_t le = base::ByteSwapToLE32(k32BitTestData);
  61. #if defined(ARCH_CPU_LITTLE_ENDIAN)
  62. EXPECT_EQ(k32BitTestData, le);
  63. #else
  64. EXPECT_EQ(k32BitSwappedTestData, le);
  65. #endif
  66. }
  67. TEST(ByteOrderTest, ByteSwapToLE64) {
  68. uint64_t le = base::ByteSwapToLE64(k64BitTestData);
  69. #if defined(ARCH_CPU_LITTLE_ENDIAN)
  70. EXPECT_EQ(k64BitTestData, le);
  71. #else
  72. EXPECT_EQ(k64BitSwappedTestData, le);
  73. #endif
  74. }
  75. TEST(ByteOrderTest, NetToHost16) {
  76. uint16_t h = base::NetToHost16(k16BitTestData);
  77. #if defined(ARCH_CPU_LITTLE_ENDIAN)
  78. EXPECT_EQ(k16BitSwappedTestData, h);
  79. #else
  80. EXPECT_EQ(k16BitTestData, h);
  81. #endif
  82. }
  83. TEST(ByteOrderTest, NetToHost32) {
  84. uint32_t h = base::NetToHost32(k32BitTestData);
  85. #if defined(ARCH_CPU_LITTLE_ENDIAN)
  86. EXPECT_EQ(k32BitSwappedTestData, h);
  87. #else
  88. EXPECT_EQ(k32BitTestData, h);
  89. #endif
  90. }
  91. TEST(ByteOrderTest, NetToHost64) {
  92. uint64_t h = base::NetToHost64(k64BitTestData);
  93. #if defined(ARCH_CPU_LITTLE_ENDIAN)
  94. EXPECT_EQ(k64BitSwappedTestData, h);
  95. #else
  96. EXPECT_EQ(k64BitTestData, h);
  97. #endif
  98. }
  99. TEST(ByteOrderTest, HostToNet16) {
  100. uint16_t n = base::HostToNet16(k16BitTestData);
  101. #if defined(ARCH_CPU_LITTLE_ENDIAN)
  102. EXPECT_EQ(k16BitSwappedTestData, n);
  103. #else
  104. EXPECT_EQ(k16BitTestData, n);
  105. #endif
  106. }
  107. TEST(ByteOrderTest, HostToNet32) {
  108. uint32_t n = base::HostToNet32(k32BitTestData);
  109. #if defined(ARCH_CPU_LITTLE_ENDIAN)
  110. EXPECT_EQ(k32BitSwappedTestData, n);
  111. #else
  112. EXPECT_EQ(k32BitTestData, n);
  113. #endif
  114. }
  115. TEST(ByteOrderTest, HostToNet64) {
  116. uint64_t n = base::HostToNet64(k64BitTestData);
  117. #if defined(ARCH_CPU_LITTLE_ENDIAN)
  118. EXPECT_EQ(k64BitSwappedTestData, n);
  119. #else
  120. EXPECT_EQ(k64BitTestData, n);
  121. #endif
  122. }