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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/guid.h"
#include <stdint.h>
#include <limits>
#include <unordered_set>
#include "base/strings/string_util.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
TEST(GUIDTest, GUIDGeneratesAllZeroes) {
static constexpr uint64_t kBytes[] = {0, 0};
const std::string clientid = RandomDataToGUIDString(kBytes);
EXPECT_EQ("00000000-0000-0000-0000-000000000000", clientid);
}
TEST(GUIDTest, GUIDGeneratesCorrectly) {
static constexpr uint64_t kBytes[] = {0x0123456789ABCDEFULL,
0xFEDCBA9876543210ULL};
const std::string clientid = RandomDataToGUIDString(kBytes);
EXPECT_EQ("01234567-89ab-cdef-fedc-ba9876543210", clientid);
}
TEST(GUIDTest, DeprecatedGUIDCorrectlyFormatted) {
constexpr int kIterations = 10;
for (int i = 0; i < kIterations; ++i) {
const std::string guid = GenerateGUID();
EXPECT_TRUE(IsValidGUID(guid));
EXPECT_TRUE(IsValidGUIDOutputString(guid));
EXPECT_TRUE(IsValidGUID(ToLowerASCII(guid)));
EXPECT_TRUE(IsValidGUID(ToUpperASCII(guid)));
}
}
TEST(GUIDTest, DeprecatedGUIDBasicUniqueness) {
constexpr int kIterations = 10;
for (int i = 0; i < kIterations; ++i) {
const std::string guid_str1 = GenerateGUID();
const std::string guid_str2 = GenerateGUID();
EXPECT_EQ(36U, guid_str1.length());
EXPECT_EQ(36U, guid_str2.length());
EXPECT_NE(guid_str1, guid_str2);
const GUID guid1 = GUID::ParseCaseInsensitive(guid_str1);
EXPECT_TRUE(guid1.is_valid());
const GUID guid2 = GUID::ParseCaseInsensitive(guid_str2);
EXPECT_TRUE(guid2.is_valid());
}
}
namespace {
// The format of GUID version 4 must be xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx,
// where y is one of [8, 9, a, b].
bool IsValidV4(const GUID& 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(GUIDTest, GUIDBasicUniqueness) {
constexpr int kIterations = 10;
for (int i = 0; i < kIterations; ++i) {
const GUID guid1 = GUID::GenerateRandomV4();
const GUID guid2 = GUID::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 TestGUIDValidity(StringPiece input, bool case_insensitive, bool strict) {
SCOPED_TRACE(input);
{
const GUID guid = GUID::ParseCaseInsensitive(input);
EXPECT_EQ(case_insensitive, guid.is_valid());
}
{
const GUID guid = GUID::ParseLowercase(input);
EXPECT_EQ(strict, guid.is_valid());
}
}
} // namespace
TEST(GUIDTest, Validity) {
// Empty GUID is invalid.
EXPECT_FALSE(GUID().is_valid());
enum Parsability { kDoesntParse, kParsesCaseInsensitiveOnly, kAlwaysParses };
static constexpr struct {
StringPiece input;
Parsability parsability;
} kGUIDValidity[] = {
{"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 : kGUIDValidity) {
const bool case_insensitive = validity.parsability != kDoesntParse;
const bool strict = validity.parsability == kAlwaysParses;
TestGUIDValidity(validity.input, case_insensitive, strict);
}
}
TEST(GUIDTest, Equality) {
static constexpr uint64_t kBytes[] = {0xDEADBEEFDEADBEEFULL,
0xDEADBEEFDEADBEEFULL};
const std::string clientid = RandomDataToGUIDString(kBytes);
static constexpr char kExpectedCanonicalStr[] =
"deadbeef-dead-beef-dead-beefdeadbeef";
ASSERT_EQ(kExpectedCanonicalStr, clientid);
const GUID from_lower = GUID::ParseCaseInsensitive(ToLowerASCII(clientid));
EXPECT_EQ(kExpectedCanonicalStr, from_lower.AsLowercaseString());
const GUID from_upper = GUID::ParseCaseInsensitive(ToUpperASCII(clientid));
EXPECT_EQ(kExpectedCanonicalStr, from_upper.AsLowercaseString());
EXPECT_EQ(from_lower, from_upper);
// Invalid GUIDs are equal.
EXPECT_EQ(GUID(), GUID());
}
TEST(GUIDTest, UnorderedSet) {
std::unordered_set<GUID, GUIDHash> guid_set;
static constexpr char kGUID1[] = "01234567-89ab-cdef-fedc-ba9876543210";
guid_set.insert(GUID::ParseCaseInsensitive(ToLowerASCII(kGUID1)));
EXPECT_EQ(1u, guid_set.size());
guid_set.insert(GUID::ParseCaseInsensitive(ToUpperASCII(kGUID1)));
EXPECT_EQ(1u, guid_set.size());
static constexpr char kGUID2[] = "deadbeef-dead-beef-dead-beefdeadbeef";
guid_set.insert(GUID::ParseCaseInsensitive(ToLowerASCII(kGUID2)));
EXPECT_EQ(2u, guid_set.size());
guid_set.insert(GUID::ParseCaseInsensitive(ToUpperASCII(kGUID2)));
EXPECT_EQ(2u, guid_set.size());
}
} // namespace base
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