base/guid_unittest.cc

   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 <limits>
   8
   9 #include "base/strings/string_util.h"
  10 #include "testing/gtest/include/gtest/gtest.h"
  11
  12 #if defined(OS_POSIX)
  13
  14 namespace {
  15
  16 bool IsGUIDv4(const std::string& guid) {
  17   // The format of GUID version 4 must be xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx,
  18   // where y is one of [8, 9, A, B].
  19   return base::IsValidGUID(guid) && guid[14] == '4' &&
  20          (guid[19] == '8' || guid[19] == '9' || guid[19] == 'A' ||
  21           guid[19] == 'a' || guid[19] == 'B' || guid[19] == 'b');
  22 }
  23
  24 }  // namespace
  25
  26
  27 TEST(GUIDTest, GUIDGeneratesAllZeroes) {
  28   uint64 bytes[] = { 0, 0 };
  29   std::string clientid = base::RandomDataToGUIDString(bytes);
  30   EXPECT_EQ("00000000-0000-0000-0000-000000000000", clientid);
  31 }
  32
  33 TEST(GUIDTest, GUIDGeneratesCorrectly) {
  34   uint64 bytes[] = { 0x0123456789ABCDEFULL, 0xFEDCBA9876543210ULL };
  35   std::string clientid = base::RandomDataToGUIDString(bytes);
  36   EXPECT_EQ("01234567-89AB-CDEF-FEDC-BA9876543210", clientid);
  37 }
  38 #endif
  39
  40 TEST(GUIDTest, GUIDCorrectlyFormatted) {
  41   const int kIterations = 10;
  42   for (int it = 0; it < kIterations; ++it) {
  43     std::string guid = base::GenerateGUID();
  44     EXPECT_TRUE(base::IsValidGUID(guid));
  45     EXPECT_TRUE(base::IsValidGUID(base::StringToLowerASCII(guid)));
  46     EXPECT_TRUE(base::IsValidGUID(StringToUpperASCII(guid)));
  47   }
  48 }
  49
  50 TEST(GUIDTest, GUIDBasicUniqueness) {
  51   const int kIterations = 10;
  52   for (int it = 0; it < kIterations; ++it) {
  53     std::string guid1 = base::GenerateGUID();
  54     std::string guid2 = base::GenerateGUID();
  55     EXPECT_EQ(36U, guid1.length());
  56     EXPECT_EQ(36U, guid2.length());
  57     EXPECT_NE(guid1, guid2);
  58 #if defined(OS_POSIX)
  59     EXPECT_TRUE(IsGUIDv4(guid1));
  60     EXPECT_TRUE(IsGUIDv4(guid2));
  61 #endif
  62   }
  63 }