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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/metrics/bucket_ranges.h" | 5 #include "base/metrics/bucket_ranges.h" |
6 | 6 |
| 7 #include <stdint.h> |
| 8 |
7 #include "testing/gtest/include/gtest/gtest.h" | 9 #include "testing/gtest/include/gtest/gtest.h" |
8 | 10 |
9 namespace base { | 11 namespace base { |
10 namespace { | 12 namespace { |
11 | 13 |
12 TEST(BucketRangesTest, NormalSetup) { | 14 TEST(BucketRangesTest, NormalSetup) { |
13 BucketRanges ranges(5); | 15 BucketRanges ranges(5); |
14 ASSERT_EQ(5u, ranges.size()); | 16 ASSERT_EQ(5u, ranges.size()); |
15 ASSERT_EQ(4u, ranges.bucket_count()); | 17 ASSERT_EQ(4u, ranges.bucket_count()); |
16 | 18 |
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69 | 71 |
70 ranges.ResetChecksum(); | 72 ranges.ResetChecksum(); |
71 EXPECT_EQ(2843835776u, ranges.checksum()); | 73 EXPECT_EQ(2843835776u, ranges.checksum()); |
72 EXPECT_TRUE(ranges.HasValidChecksum()); | 74 EXPECT_TRUE(ranges.HasValidChecksum()); |
73 } | 75 } |
74 | 76 |
75 // Table was generated similarly to sample code for CRC-32 given on: | 77 // Table was generated similarly to sample code for CRC-32 given on: |
76 // http://www.w3.org/TR/PNG/#D-CRCAppendix. | 78 // http://www.w3.org/TR/PNG/#D-CRCAppendix. |
77 TEST(BucketRangesTest, Crc32TableTest) { | 79 TEST(BucketRangesTest, Crc32TableTest) { |
78 for (int i = 0; i < 256; ++i) { | 80 for (int i = 0; i < 256; ++i) { |
79 uint32 checksum = i; | 81 uint32_t checksum = i; |
80 for (int j = 0; j < 8; ++j) { | 82 for (int j = 0; j < 8; ++j) { |
81 const uint32 kReversedPolynomial = 0xedb88320L; | 83 const uint32_t kReversedPolynomial = 0xedb88320L; |
82 if (checksum & 1) | 84 if (checksum & 1) |
83 checksum = kReversedPolynomial ^ (checksum >> 1); | 85 checksum = kReversedPolynomial ^ (checksum >> 1); |
84 else | 86 else |
85 checksum >>= 1; | 87 checksum >>= 1; |
86 } | 88 } |
87 EXPECT_EQ(kCrcTable[i], checksum); | 89 EXPECT_EQ(kCrcTable[i], checksum); |
88 } | 90 } |
89 } | 91 } |
90 | 92 |
91 } // namespace | 93 } // namespace |
92 } // namespace base | 94 } // namespace base |
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