1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
/*
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "rtc_base/helpers.h"
#include <string.h>
#include <string>
#include "rtc_base/buffer.h"
#include "test/gtest.h"
namespace rtc {
class RandomTest : public ::testing::Test {};
TEST_F(RandomTest, TestCreateRandomId) {
CreateRandomId();
}
TEST_F(RandomTest, TestCreateRandomDouble) {
for (int i = 0; i < 100; ++i) {
double r = CreateRandomDouble();
EXPECT_GE(r, 0.0);
EXPECT_LT(r, 1.0);
}
}
TEST_F(RandomTest, TestCreateNonZeroRandomId) {
EXPECT_NE(0U, CreateRandomNonZeroId());
}
TEST_F(RandomTest, TestCreateRandomString) {
std::string random = CreateRandomString(256);
EXPECT_EQ(256U, random.size());
std::string random2;
EXPECT_TRUE(CreateRandomString(256, &random2));
EXPECT_NE(random, random2);
EXPECT_EQ(256U, random2.size());
}
TEST_F(RandomTest, TestCreateRandomData) {
static size_t kRandomDataLength = 32;
std::string random1;
std::string random2;
EXPECT_TRUE(CreateRandomData(kRandomDataLength, &random1));
EXPECT_EQ(kRandomDataLength, random1.size());
EXPECT_TRUE(CreateRandomData(kRandomDataLength, &random2));
EXPECT_EQ(kRandomDataLength, random2.size());
EXPECT_NE(0, memcmp(random1.data(), random2.data(), kRandomDataLength));
}
TEST_F(RandomTest, TestCreateRandomStringEvenlyDivideTable) {
static std::string kUnbiasedTable("01234567");
std::string random;
EXPECT_TRUE(CreateRandomString(256, kUnbiasedTable, &random));
EXPECT_EQ(256U, random.size());
static std::string kBiasedTable("0123456789");
EXPECT_FALSE(CreateRandomString(256, kBiasedTable, &random));
EXPECT_EQ(0U, random.size());
}
TEST_F(RandomTest, TestCreateRandomUuid) {
std::string random = CreateRandomUuid();
EXPECT_EQ(36U, random.size());
}
TEST_F(RandomTest, TestCreateRandomForTest) {
// Make sure we get the output we expect.
SetRandomTestMode(true);
EXPECT_EQ(2154761789U, CreateRandomId());
EXPECT_EQ("h0ISP4S5SJKH/9EY", CreateRandomString(16));
EXPECT_EQ("41706e92-cdd3-46d9-a22d-8ff1737ffb11", CreateRandomUuid());
static size_t kRandomDataLength = 32;
std::string random;
EXPECT_TRUE(CreateRandomData(kRandomDataLength, &random));
EXPECT_EQ(kRandomDataLength, random.size());
Buffer expected(
"\xbd\x52\x2a\x4b\x97\x93\x2f\x1c"
"\xc4\x72\xab\xa2\x88\x68\x3e\xcc"
"\xa3\x8d\xaf\x13\x3b\xbc\x83\xbb"
"\x16\xf1\xcf\x56\x0c\xf5\x4a\x8b",
kRandomDataLength);
EXPECT_EQ(0, memcmp(expected.data(), random.data(), kRandomDataLength));
// Reset and make sure we get the same output.
SetRandomTestMode(true);
EXPECT_EQ(2154761789U, CreateRandomId());
EXPECT_EQ("h0ISP4S5SJKH/9EY", CreateRandomString(16));
EXPECT_EQ("41706e92-cdd3-46d9-a22d-8ff1737ffb11", CreateRandomUuid());
EXPECT_TRUE(CreateRandomData(kRandomDataLength, &random));
EXPECT_EQ(kRandomDataLength, random.size());
EXPECT_EQ(0, memcmp(expected.data(), random.data(), kRandomDataLength));
// Test different character sets.
SetRandomTestMode(true);
std::string str;
EXPECT_TRUE(CreateRandomString(16, "a", &str));
EXPECT_EQ("aaaaaaaaaaaaaaaa", str);
EXPECT_TRUE(CreateRandomString(16, "abcd", &str));
EXPECT_EQ("dbaaabdaccbcabbd", str);
// Turn off test mode for other tests.
SetRandomTestMode(false);
}
} // namespace rtc
|
