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
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/uuid.h"
#include <stdint.h>
#include <array>
#include <limits>
#include <set>
#include <string_view>
#include <unordered_set>
#include "base/strings/string_util.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace {
// The format of Uuid version 4 must be xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx,
// where y is one of [8, 9, a, b].
bool IsValidV4(const Uuid& guid) {
const std::string& lowercase = guid.AsLowercaseString();
return guid.is_valid() && lowercase[14] == '4' &&
(lowercase[19] == '8' || lowercase[19] == '9' ||
lowercase[19] == 'a' || lowercase[19] == 'b');
}
} // namespace
TEST(UuidTest, UuidBasicUniqueness) {
constexpr int kIterations = 10;
for (int i = 0; i < kIterations; ++i) {
const Uuid guid1 = Uuid::GenerateRandomV4();
const Uuid guid2 = Uuid::GenerateRandomV4();
EXPECT_NE(guid1, guid2);
EXPECT_TRUE(guid1.is_valid());
EXPECT_TRUE(IsValidV4(guid1));
EXPECT_TRUE(guid2.is_valid());
EXPECT_TRUE(IsValidV4(guid2));
}
}
namespace {
void TestUuidValidity(std::string_view input,
bool case_insensitive,
bool strict) {
SCOPED_TRACE(input);
{
const Uuid guid = Uuid::ParseCaseInsensitive(input);
EXPECT_EQ(case_insensitive, guid.is_valid());
}
{
const Uuid guid = Uuid::ParseLowercase(input);
EXPECT_EQ(strict, guid.is_valid());
}
}
} // namespace
TEST(UuidTest, Validity) {
// Empty Uuid is invalid.
EXPECT_FALSE(Uuid().is_valid());
enum Parsability { kDoesntParse, kParsesCaseInsensitiveOnly, kAlwaysParses };
static constexpr struct {
std::string_view input;
Parsability parsability;
} kUuidValidity[] = {
{"invalid", kDoesntParse},
{"0123456789ab-cdef-fedc-ba98-76543210", kDoesntParse},
{"0123456789abcdeffedcba9876543210", kDoesntParse},
{"01234567-89Zz-ZzZz-ZzZz-Zz9876543210", kDoesntParse},
{"DEADBEEFDEADBEEFDEADBEEFDEADBEEF", kDoesntParse},
{"deadbeefWdeadXbeefYdeadZbeefdeadbeef", kDoesntParse},
{"XXXdeadbeefWdeadXbeefYdeadZbeefdeadbeefXXX", kDoesntParse},
{"01234567-89aB-cDeF-fEdC-bA9876543210", kParsesCaseInsensitiveOnly},
{"DEADBEEF-DEAD-BEEF-DEAD-BEEFDEADBEEF", kParsesCaseInsensitiveOnly},
{"00000000-0000-0000-0000-000000000000", kAlwaysParses},
{"deadbeef-dead-beef-dead-beefdeadbeef", kAlwaysParses},
};
for (const auto& validity : kUuidValidity) {
const bool case_insensitive = validity.parsability != kDoesntParse;
const bool strict = validity.parsability == kAlwaysParses;
TestUuidValidity(validity.input, case_insensitive, strict);
}
}
TEST(UuidTest, EqualityAndRoundTrip) {
static constexpr char kCanonicalStr[] =
"deadbeef-dead-4eef-bead-beefdeadbeef";
const Uuid from_lower =
Uuid::ParseCaseInsensitive(ToLowerASCII(kCanonicalStr));
EXPECT_EQ(kCanonicalStr, from_lower.AsLowercaseString());
const Uuid from_upper =
Uuid::ParseCaseInsensitive(ToUpperASCII(kCanonicalStr));
EXPECT_EQ(kCanonicalStr, from_upper.AsLowercaseString());
EXPECT_EQ(from_lower, from_upper);
// Invalid Uuids are equal.
EXPECT_EQ(Uuid(), Uuid());
}
TEST(UuidTest, UnorderedSet) {
std::unordered_set<Uuid, UuidHash> guid_set;
static constexpr char kUuid1[] = "01234567-89ab-cdef-fedc-ba9876543210";
guid_set.insert(Uuid::ParseCaseInsensitive(ToLowerASCII(kUuid1)));
EXPECT_EQ(1u, guid_set.size());
guid_set.insert(Uuid::ParseCaseInsensitive(ToUpperASCII(kUuid1)));
EXPECT_EQ(1u, guid_set.size());
static constexpr char kUuid2[] = "deadbeef-dead-beef-dead-beefdeadbeef";
guid_set.insert(Uuid::ParseCaseInsensitive(ToLowerASCII(kUuid2)));
EXPECT_EQ(2u, guid_set.size());
guid_set.insert(Uuid::ParseCaseInsensitive(ToUpperASCII(kUuid2)));
EXPECT_EQ(2u, guid_set.size());
}
TEST(UuidTest, Set) {
std::set<Uuid> guid_set;
static constexpr char kUuid1[] = "01234567-89ab-cdef-0123-456789abcdef";
const Uuid guid1 = Uuid::ParseLowercase(kUuid1);
ASSERT_TRUE(guid1.is_valid());
guid_set.insert(guid1);
static constexpr char kUuid2[] = "deadbeef-dead-beef-dead-beefdeadbeef";
const Uuid guid2 = Uuid::ParseLowercase(kUuid2);
ASSERT_TRUE(guid2.is_valid());
guid_set.insert(guid2);
// Test that the order of the Uuids was preserved.
auto it = guid_set.begin();
EXPECT_EQ(guid1, *it);
++it;
EXPECT_EQ(guid2, *it);
++it;
EXPECT_EQ(guid_set.end(), it);
}
TEST(UuidTest, Compare) {
static constexpr char kUuid[] = "21abd97f-73e8-4b88-9389-a9fee6abda5e";
static constexpr char kUuidLess[] = "1e0dcaca-9e7c-4f4b-bcc6-e4c02b0c99df";
static constexpr char kUuidGreater[] = "6eeb1bc8-186b-433c-9d6a-a827bc96b2d4";
const Uuid guid = Uuid::ParseLowercase(kUuid);
const Uuid guid_eq = Uuid::ParseLowercase(kUuid);
const Uuid guid_lt = Uuid::ParseLowercase(kUuidLess);
const Uuid guid_gt = Uuid::ParseLowercase(kUuidGreater);
const Uuid guid_invalid = Uuid();
EXPECT_TRUE(guid_eq == guid);
EXPECT_FALSE(guid_eq != guid);
EXPECT_FALSE(guid_eq < guid);
EXPECT_TRUE(guid_eq <= guid);
EXPECT_FALSE(guid_eq > guid);
EXPECT_TRUE(guid_eq >= guid);
EXPECT_FALSE(guid_lt == guid);
EXPECT_TRUE(guid_lt != guid);
EXPECT_TRUE(guid_lt < guid);
EXPECT_TRUE(guid_lt <= guid);
EXPECT_FALSE(guid_lt > guid);
EXPECT_FALSE(guid_lt >= guid);
EXPECT_FALSE(guid_gt == guid);
EXPECT_TRUE(guid_gt != guid);
EXPECT_FALSE(guid_gt < guid);
EXPECT_FALSE(guid_gt <= guid);
EXPECT_TRUE(guid_gt > guid);
EXPECT_TRUE(guid_gt >= guid);
// Invalid Uuids are the "least".
EXPECT_FALSE(guid_invalid == guid);
EXPECT_TRUE(guid_invalid != guid);
EXPECT_TRUE(guid_invalid < guid);
EXPECT_TRUE(guid_invalid <= guid);
EXPECT_FALSE(guid_invalid > guid);
EXPECT_FALSE(guid_invalid >= guid);
}
} // namespace base
|
