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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #include "base/guid.h"
6 
7 #include <stdint.h>
8 
9 #include <limits>
10 
11 #include "base/strings/string_util.h"
12 #include "build/build_config.h"
13 #include "testing/gtest/include/gtest/gtest.h"
14 
15 namespace base {
16 
17 namespace {
18 
IsGUIDv4(const std::string & guid)19 bool IsGUIDv4(const std::string& guid) {
20   // The format of GUID version 4 must be xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx,
21   // where y is one of [8, 9, A, B].
22   return IsValidGUID(guid) && guid[14] == '4' &&
23          (guid[19] == '8' || guid[19] == '9' || guid[19] == 'A' ||
24           guid[19] == 'a' || guid[19] == 'B' || guid[19] == 'b');
25 }
26 
27 }  // namespace
28 
TEST(GUIDTest,GUIDGeneratesAllZeroes)29 TEST(GUIDTest, GUIDGeneratesAllZeroes) {
30   uint64_t bytes[] = {0, 0};
31   std::string clientid = RandomDataToGUIDString(bytes);
32   EXPECT_EQ("00000000-0000-0000-0000-000000000000", clientid);
33 }
34 
TEST(GUIDTest,GUIDGeneratesCorrectly)35 TEST(GUIDTest, GUIDGeneratesCorrectly) {
36   uint64_t bytes[] = {0x0123456789ABCDEFULL, 0xFEDCBA9876543210ULL};
37   std::string clientid = RandomDataToGUIDString(bytes);
38   EXPECT_EQ("01234567-89ab-cdef-fedc-ba9876543210", clientid);
39 }
40 
TEST(GUIDTest,GUIDCorrectlyFormatted)41 TEST(GUIDTest, GUIDCorrectlyFormatted) {
42   const int kIterations = 10;
43   for (int it = 0; it < kIterations; ++it) {
44     std::string guid = GenerateGUID();
45     EXPECT_TRUE(IsValidGUID(guid));
46     EXPECT_TRUE(IsValidGUIDOutputString(guid));
47     EXPECT_TRUE(IsValidGUID(ToLowerASCII(guid)));
48     EXPECT_TRUE(IsValidGUID(ToUpperASCII(guid)));
49   }
50 }
51 
TEST(GUIDTest,GUIDBasicUniqueness)52 TEST(GUIDTest, GUIDBasicUniqueness) {
53   const int kIterations = 10;
54   for (int it = 0; it < kIterations; ++it) {
55     std::string guid1 = GenerateGUID();
56     std::string guid2 = GenerateGUID();
57     EXPECT_EQ(36U, guid1.length());
58     EXPECT_EQ(36U, guid2.length());
59     EXPECT_NE(guid1, guid2);
60     EXPECT_TRUE(IsGUIDv4(guid1));
61     EXPECT_TRUE(IsGUIDv4(guid2));
62   }
63 }
64 
65 }  // namespace base
66