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
|
// Copyright 2022 The Abseil Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "absl/crc/internal/crc_cord_state.h"
#include <algorithm>
#include <cstdint>
#include <string>
#include <utility>
#include "gtest/gtest.h"
#include "absl/crc/crc32c.h"
namespace {
TEST(CrcCordState, Default) {
absl::crc_internal::CrcCordState state;
EXPECT_TRUE(state.IsNormalized());
EXPECT_EQ(state.Checksum(), absl::crc32c_t{0});
state.Normalize();
EXPECT_EQ(state.Checksum(), absl::crc32c_t{0});
}
TEST(CrcCordState, Normalize) {
absl::crc_internal::CrcCordState state;
auto* rep = state.mutable_rep();
rep->prefix_crc.push_back(
absl::crc_internal::CrcCordState::PrefixCrc(1000, absl::crc32c_t{1000}));
rep->prefix_crc.push_back(
absl::crc_internal::CrcCordState::PrefixCrc(2000, absl::crc32c_t{2000}));
rep->removed_prefix =
absl::crc_internal::CrcCordState::PrefixCrc(500, absl::crc32c_t{500});
// The removed_prefix means state is not normalized.
EXPECT_FALSE(state.IsNormalized());
absl::crc32c_t crc = state.Checksum();
state.Normalize();
EXPECT_TRUE(state.IsNormalized());
// The checksum should not change as a result of calling Normalize().
EXPECT_EQ(state.Checksum(), crc);
EXPECT_EQ(rep->removed_prefix.length, 0);
}
TEST(CrcCordState, Copy) {
absl::crc_internal::CrcCordState state;
auto* rep = state.mutable_rep();
rep->prefix_crc.push_back(
absl::crc_internal::CrcCordState::PrefixCrc(1000, absl::crc32c_t{1000}));
absl::crc_internal::CrcCordState copy = state;
EXPECT_EQ(state.Checksum(), absl::crc32c_t{1000});
EXPECT_EQ(copy.Checksum(), absl::crc32c_t{1000});
}
TEST(CrcCordState, UnsharedSelfCopy) {
absl::crc_internal::CrcCordState state;
auto* rep = state.mutable_rep();
rep->prefix_crc.push_back(
absl::crc_internal::CrcCordState::PrefixCrc(1000, absl::crc32c_t{1000}));
const absl::crc_internal::CrcCordState& ref = state;
state = ref;
EXPECT_EQ(state.Checksum(), absl::crc32c_t{1000});
}
TEST(CrcCordState, Move) {
absl::crc_internal::CrcCordState state;
auto* rep = state.mutable_rep();
rep->prefix_crc.push_back(
absl::crc_internal::CrcCordState::PrefixCrc(1000, absl::crc32c_t{1000}));
absl::crc_internal::CrcCordState moved = std::move(state);
EXPECT_EQ(moved.Checksum(), absl::crc32c_t{1000});
}
TEST(CrcCordState, UnsharedSelfMove) {
absl::crc_internal::CrcCordState state;
auto* rep = state.mutable_rep();
rep->prefix_crc.push_back(
absl::crc_internal::CrcCordState::PrefixCrc(1000, absl::crc32c_t{1000}));
absl::crc_internal::CrcCordState& ref = state;
state = std::move(ref);
EXPECT_EQ(state.Checksum(), absl::crc32c_t{1000});
}
TEST(CrcCordState, PoisonDefault) {
absl::crc_internal::CrcCordState state;
state.Poison();
EXPECT_NE(state.Checksum(), absl::crc32c_t{0});
}
TEST(CrcCordState, PoisonData) {
absl::crc_internal::CrcCordState state;
auto* rep = state.mutable_rep();
rep->prefix_crc.push_back(
absl::crc_internal::CrcCordState::PrefixCrc(1000, absl::crc32c_t{1000}));
rep->prefix_crc.push_back(
absl::crc_internal::CrcCordState::PrefixCrc(2000, absl::crc32c_t{2000}));
rep->removed_prefix =
absl::crc_internal::CrcCordState::PrefixCrc(500, absl::crc32c_t{500});
absl::crc32c_t crc = state.Checksum();
state.Poison();
EXPECT_NE(state.Checksum(), crc);
}
} // namespace
|
