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 namespace base {
  13
  14 #if defined(OS_POSIX)
  15
  16 namespace {
  17
  18 bool IsGUIDv4(const std::string& guid) {
  19   // The format of GUID version 4 must be xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx,
  20   // where y is one of [8, 9, A, B].
  21   return IsValidGUID(guid) && guid[14] == '4' &&
  22          (guid[19] == '8' || guid[19] == '9' || guid[19] == 'A' ||
  23           guid[19] == 'a' || guid[19] == 'B' || guid[19] == 'b');
  24 }
  25
  26 }  // namespace
  27
  28 TEST(GUIDTest, GUIDGeneratesAllZeroes) {
  29   uint64 bytes[] = { 0, 0 };
  30   std::string clientid = RandomDataToGUIDString(bytes);
  31   EXPECT_EQ("00000000-0000-0000-0000-000000000000", clientid);
  32 }
  33
  34 TEST(GUIDTest, GUIDGeneratesCorrectly) {
  35   uint64 bytes[] = { 0x0123456789ABCDEFULL, 0xFEDCBA9876543210ULL };
  36   std::string clientid = RandomDataToGUIDString(bytes);
  37   EXPECT_EQ("01234567-89AB-CDEF-FEDC-BA9876543210", clientid);
  38 }
  39 #endif
  40
  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(IsValidGUID(StringToLowerASCII(guid)));
  47     EXPECT_TRUE(IsValidGUID(StringToUpperASCII(guid)));
  48   }
  49 }
  50
  51 TEST(GUIDTest, GUIDBasicUniqueness) {
  52   const int kIterations = 10;
  53   for (int it = 0; it < kIterations; ++it) {
  54     std::string guid1 = GenerateGUID();
  55     std::string guid2 = GenerateGUID();
  56     EXPECT_EQ(36U, guid1.length());
  57     EXPECT_EQ(36U, guid2.length());
  58     EXPECT_NE(guid1, guid2);
  59 #if defined(OS_POSIX)
  60     EXPECT_TRUE(IsGUIDv4(guid1));
  61     EXPECT_TRUE(IsGUIDv4(guid2));
  62 #endif
  63   }
  64 }
  65
  66 }  // namespace base