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
|
// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/zucchini/crc32.h"
#include <stdint.h>
#include <iterator>
#include "base/compiler_specific.h"
#include "base/test/gtest_util.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace zucchini {
constexpr uint8_t bytes[] = {0x10, 0x32, 0x54, 0x76, 0x98,
0xBA, 0xDC, 0xFE, 0x10, 0x00};
TEST(Crc32Test, All) {
// Results can be verified with any CRC-32 calculator found online.
// Empty region.
EXPECT_EQ(0x00000000U, CalculateCrc32(std::begin(bytes), std::begin(bytes)));
// Single byte.
UNSAFE_TODO(EXPECT_EQ(
0xCFB5FFE9U, CalculateCrc32(std::begin(bytes), std::begin(bytes) + 1)));
// Same byte (0x10) appearing at different location.
UNSAFE_TODO(EXPECT_EQ(0xCFB5FFE9U, CalculateCrc32(std::begin(bytes) + 8,
std::begin(bytes) + 9)));
// Single byte of 0.
UNSAFE_TODO(EXPECT_EQ(
0xD202EF8DU, CalculateCrc32(std::begin(bytes) + 9, std::end(bytes))));
// Whole region.
EXPECT_EQ(0xA86FD7D6U, CalculateCrc32(std::begin(bytes), std::end(bytes)));
// Whole region excluding 0 at end.
UNSAFE_TODO(EXPECT_EQ(
0x0762F38BU, CalculateCrc32(std::begin(bytes), std::begin(bytes) + 9)));
#if GTEST_HAS_DEATH_TEST
UNSAFE_TODO(EXPECT_DCHECK_DEATH(
CalculateCrc32(std::begin(bytes) + 1, std::begin(bytes))));
#endif
}
} // namespace zucchini
|
