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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 <gtest/gtest.h>
#include "base/strings/string_util.h"
#include "build/build_config.h"
namespace base {
#if defined(OS_POSIX)
namespace {
template <typename Char>
inline bool IsHexDigit(Char c) {
return (c >= '0' && c <= '9') ||
(c >= 'A' && c <= 'F') ||
(c >= 'a' && c <= 'f');
}
bool IsValidGUID(const std::string& guid) {
const size_t kGUIDLength = 36U;
if (guid.length() != kGUIDLength)
return false;
for (size_t i = 0; i < guid.length(); ++i) {
char current = guid[i];
if (i == 8 || i == 13 || i == 18 || i == 23) {
if (current != '-')
return false;
} else {
if (!IsHexDigit(current))
return false;
}
}
return true;
}
bool IsGUIDv4(const std::string& guid) {
// The format of GUID version 4 must be xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx,
// where y is one of [8, 9, A, B].
return IsValidGUID(guid) && guid[14] == '4' &&
(guid[19] == '8' || guid[19] == '9' || guid[19] == 'A' ||
guid[19] == 'a' || guid[19] == 'B' || guid[19] == 'b');
}
} // namespace
TEST(GUIDTest, GUIDGeneratesAllZeroes) {
uint64_t bytes[] = {0, 0};
std::string clientid = RandomDataToGUIDString(bytes);
EXPECT_EQ("00000000-0000-0000-0000-000000000000", clientid);
}
TEST(GUIDTest, GUIDGeneratesCorrectly) {
uint64_t bytes[] = {0x0123456789ABCDEFULL, 0xFEDCBA9876543210ULL};
std::string clientid = RandomDataToGUIDString(bytes);
EXPECT_EQ("01234567-89AB-CDEF-FEDC-BA9876543210", clientid);
}
#endif
TEST(GUIDTest, GUIDCorrectlyFormatted) {
const int kIterations = 10;
for (int it = 0; it < kIterations; ++it) {
std::string guid = GenerateGUID();
EXPECT_TRUE(IsValidGUID(guid));
}
}
TEST(GUIDTest, GUIDBasicUniqueness) {
const int kIterations = 10;
for (int it = 0; it < kIterations; ++it) {
std::string guid1 = GenerateGUID();
std::string guid2 = GenerateGUID();
EXPECT_EQ(36U, guid1.length());
EXPECT_EQ(36U, guid2.length());
EXPECT_NE(guid1, guid2);
#if defined(OS_POSIX)
EXPECT_TRUE(IsGUIDv4(guid1));
EXPECT_TRUE(IsGUIDv4(guid2));
#endif
}
}
} // namespace base
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