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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
// Copyright (c) 2018 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include <limits>
#include <string>
#include "leveldb/slice.h"
#include "util/logging.h"
#include "util/testharness.h"
namespace leveldb {
class Logging {};
TEST(Logging, NumberToString) {
ASSERT_EQ("0", NumberToString(0));
ASSERT_EQ("1", NumberToString(1));
ASSERT_EQ("9", NumberToString(9));
ASSERT_EQ("10", NumberToString(10));
ASSERT_EQ("11", NumberToString(11));
ASSERT_EQ("19", NumberToString(19));
ASSERT_EQ("99", NumberToString(99));
ASSERT_EQ("100", NumberToString(100));
ASSERT_EQ("109", NumberToString(109));
ASSERT_EQ("190", NumberToString(190));
ASSERT_EQ("123", NumberToString(123));
ASSERT_EQ("12345678", NumberToString(12345678));
static_assert(std::numeric_limits<uint64_t>::max() == 18446744073709551615U,
"Test consistency check");
ASSERT_EQ("18446744073709551000", NumberToString(18446744073709551000U));
ASSERT_EQ("18446744073709551600", NumberToString(18446744073709551600U));
ASSERT_EQ("18446744073709551610", NumberToString(18446744073709551610U));
ASSERT_EQ("18446744073709551614", NumberToString(18446744073709551614U));
ASSERT_EQ("18446744073709551615", NumberToString(18446744073709551615U));
}
void ConsumeDecimalNumberRoundtripTest(uint64_t number,
const std::string& padding = "") {
std::string decimal_number = NumberToString(number);
std::string input_string = decimal_number + padding;
Slice input(input_string);
Slice output = input;
uint64_t result;
ASSERT_TRUE(ConsumeDecimalNumber(&output, &result));
ASSERT_EQ(number, result);
ASSERT_EQ(decimal_number.size(), output.data() - input.data());
ASSERT_EQ(padding.size(), output.size());
}
TEST(Logging, ConsumeDecimalNumberRoundtrip) {
ConsumeDecimalNumberRoundtripTest(0);
ConsumeDecimalNumberRoundtripTest(1);
ConsumeDecimalNumberRoundtripTest(9);
ConsumeDecimalNumberRoundtripTest(10);
ConsumeDecimalNumberRoundtripTest(11);
ConsumeDecimalNumberRoundtripTest(19);
ConsumeDecimalNumberRoundtripTest(99);
ConsumeDecimalNumberRoundtripTest(100);
ConsumeDecimalNumberRoundtripTest(109);
ConsumeDecimalNumberRoundtripTest(190);
ConsumeDecimalNumberRoundtripTest(123);
ASSERT_EQ("12345678", NumberToString(12345678));
for (uint64_t i = 0; i < 100; ++i) {
uint64_t large_number = std::numeric_limits<uint64_t>::max() - i;
ConsumeDecimalNumberRoundtripTest(large_number);
}
}
TEST(Logging, ConsumeDecimalNumberRoundtripWithPadding) {
ConsumeDecimalNumberRoundtripTest(0, " ");
ConsumeDecimalNumberRoundtripTest(1, "abc");
ConsumeDecimalNumberRoundtripTest(9, "x");
ConsumeDecimalNumberRoundtripTest(10, "_");
ConsumeDecimalNumberRoundtripTest(11, std::string("\0\0\0", 3));
ConsumeDecimalNumberRoundtripTest(19, "abc");
ConsumeDecimalNumberRoundtripTest(99, "padding");
ConsumeDecimalNumberRoundtripTest(100, " ");
for (uint64_t i = 0; i < 100; ++i) {
uint64_t large_number = std::numeric_limits<uint64_t>::max() - i;
ConsumeDecimalNumberRoundtripTest(large_number, "pad");
}
}
void ConsumeDecimalNumberOverflowTest(const std::string& input_string) {
Slice input(input_string);
Slice output = input;
uint64_t result;
ASSERT_EQ(false, ConsumeDecimalNumber(&output, &result));
}
TEST(Logging, ConsumeDecimalNumberOverflow) {
static_assert(std::numeric_limits<uint64_t>::max() == 18446744073709551615U,
"Test consistency check");
ConsumeDecimalNumberOverflowTest("18446744073709551616");
ConsumeDecimalNumberOverflowTest("18446744073709551617");
ConsumeDecimalNumberOverflowTest("18446744073709551618");
ConsumeDecimalNumberOverflowTest("18446744073709551619");
ConsumeDecimalNumberOverflowTest("18446744073709551620");
ConsumeDecimalNumberOverflowTest("18446744073709551621");
ConsumeDecimalNumberOverflowTest("18446744073709551622");
ConsumeDecimalNumberOverflowTest("18446744073709551623");
ConsumeDecimalNumberOverflowTest("18446744073709551624");
ConsumeDecimalNumberOverflowTest("18446744073709551625");
ConsumeDecimalNumberOverflowTest("18446744073709551626");
ConsumeDecimalNumberOverflowTest("18446744073709551700");
ConsumeDecimalNumberOverflowTest("99999999999999999999");
}
void ConsumeDecimalNumberNoDigitsTest(const std::string& input_string) {
Slice input(input_string);
Slice output = input;
uint64_t result;
ASSERT_EQ(false, ConsumeDecimalNumber(&output, &result));
ASSERT_EQ(input.data(), output.data());
ASSERT_EQ(input.size(), output.size());
}
TEST(Logging, ConsumeDecimalNumberNoDigits) {
ConsumeDecimalNumberNoDigitsTest("");
ConsumeDecimalNumberNoDigitsTest(" ");
ConsumeDecimalNumberNoDigitsTest("a");
ConsumeDecimalNumberNoDigitsTest(" 123");
ConsumeDecimalNumberNoDigitsTest("a123");
ConsumeDecimalNumberNoDigitsTest(std::string("\000123", 4));
ConsumeDecimalNumberNoDigitsTest(std::string("\177123", 4));
ConsumeDecimalNumberNoDigitsTest(std::string("\377123", 4));
}
} // namespace leveldb
int main(int argc, char** argv) { return leveldb::test::RunAllTests(); }
|
