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1 // Copyright (c) 2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2008 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "base/rand_util.h" | 5 #include "base/rand_util.h" |
6 | 6 |
7 #include <limits> | 7 #include <limits> |
8 | 8 |
9 #include "testing/gtest/include/gtest/gtest.h" | 9 #include "testing/gtest/include/gtest/gtest.h" |
10 | 10 |
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28 EXPECT_LE(0.0, number); | 28 EXPECT_LE(0.0, number); |
29 } | 29 } |
30 | 30 |
31 // Make sure that it is still appropriate to use RandGenerator in conjunction | 31 // Make sure that it is still appropriate to use RandGenerator in conjunction |
32 // with std::random_shuffle(). | 32 // with std::random_shuffle(). |
33 TEST(RandUtilTest, RandGeneratorForRandomShuffle) { | 33 TEST(RandUtilTest, RandGeneratorForRandomShuffle) { |
34 EXPECT_EQ(base::RandGenerator(1), 0U); | 34 EXPECT_EQ(base::RandGenerator(1), 0U); |
35 EXPECT_LE(std::numeric_limits<ptrdiff_t>::max(), | 35 EXPECT_LE(std::numeric_limits<ptrdiff_t>::max(), |
36 std::numeric_limits<int64>::max()); | 36 std::numeric_limits<int64>::max()); |
37 } | 37 } |
38 | |
39 #if defined(OS_POSIX) | |
40 // For unit testing purposes only. Do not use outside of tests. | |
41 namespace base { | |
42 extern std::string RandomBytesToGUIDString(const uint64 bytes[2]); | |
43 } // base | |
44 | |
45 TEST(RandUtilTest, GUIDGeneratesAllZeroes) { | |
46 uint64 bytes[] = { 0, 0 }; | |
47 std::string clientid = base::RandomBytesToGUIDString(bytes); | |
48 EXPECT_EQ("00000000-0000-0000-0000-000000000000", clientid); | |
49 } | |
50 | |
51 TEST(RandUtilTest, GUIDGeneratesCorrectly) { | |
52 uint64 bytes[] = { 0x0123456789ABCDEFULL, 0xFEDCBA9876543210ULL }; | |
53 std::string clientid = base::RandomBytesToGUIDString(bytes); | |
54 EXPECT_EQ("01234567-89AB-CDEF-FEDC-BA9876543210", clientid); | |
55 } | |
56 #endif | |
57 | |
58 TEST(RandUtilTest, GUIDCorrectlyFormatted) { | |
59 const int kIterations = 10; | |
60 for (int it = 0; it < kIterations; ++it) { | |
61 std::string guid = base::GenerateGUID(); | |
62 EXPECT_EQ(36U, guid.length()); | |
63 std::string hexchars = "0123456789ABCDEF"; | |
64 for (uint32 i = 0; i < guid.length(); ++i) { | |
65 char current = guid.at(i); | |
66 if (i == 8 || i == 13 || i == 18 || i == 23) { | |
67 EXPECT_EQ('-', current); | |
68 } else { | |
69 EXPECT_TRUE(std::string::npos != hexchars.find(current)); | |
70 } | |
71 } | |
72 } | |
73 } | |
74 | |
75 TEST(RandUtilTest, GUIDBasicUniqueness) { | |
76 const int kIterations = 10; | |
77 for (int it = 0; it < kIterations; ++it) { | |
78 std::string guid1 = base::GenerateGUID(); | |
79 std::string guid2 = base::GenerateGUID(); | |
80 EXPECT_EQ(36U, guid1.length()); | |
81 EXPECT_EQ(36U, guid2.length()); | |
82 EXPECT_NE(guid1, guid2); | |
83 } | |
84 } | |
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