1/*
2 * Copyright (C) 2012 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27
28#include <limits>
29#include <wtf/StringExtras.h>
30#include <wtf/text/CString.h>
31#include <wtf/text/WTFString.h>
32
33template<typename IntegerType> struct PrintfFormatTrait { static const char format[]; };
34
35template<> struct PrintfFormatTrait<short> { static const char format[]; };
36const char PrintfFormatTrait<short>::format[] = "%hd";
37
38template<> struct PrintfFormatTrait<int> { static const char format[]; };
39const char PrintfFormatTrait<int>::format[] = "%d";
40
41template<> struct PrintfFormatTrait<long> { static const char format[]; };
42const char PrintfFormatTrait<long>::format[] = "%ld";
43
44template<> struct PrintfFormatTrait<long long> { static const char format[]; };
45#if OS(WINDOWS)
46const char PrintfFormatTrait<long long>::format[] = "%I64i";
47#else
48const char PrintfFormatTrait<long long>::format[] = "%lli";
49#endif // OS(WINDOWS)
50
51template<> struct PrintfFormatTrait<unsigned short> { static const char format[]; };
52const char PrintfFormatTrait<unsigned short>::format[] = "%hu";
53
54template<> struct PrintfFormatTrait<unsigned> { static const char format[]; };
55const char PrintfFormatTrait<unsigned>::format[] = "%u";
56
57template<> struct PrintfFormatTrait<unsigned long> { static const char format[]; };
58const char PrintfFormatTrait<unsigned long>::format[] = "%lu";
59
60template<> struct PrintfFormatTrait<unsigned long long> { static const char format[]; };
61#if OS(WINDOWS)
62const char PrintfFormatTrait<unsigned long long>::format[] = "%I64u";
63#else
64const char PrintfFormatTrait<unsigned long long>::format[] = "%llu";
65#endif // OS(WINDOWS)
66
67
68// FIXME: use snprintf from StringExtras.h
69template<typename IntegerType>
70void testBoundaries()
71{
72 const unsigned bufferSize = 256;
73 Vector<char, bufferSize> buffer;
74 buffer.resize(bufferSize);
75
76 const IntegerType min = std::numeric_limits<IntegerType>::min();
77 CString minStringData = String::number(min).latin1();
78 snprintf(buffer.data(), bufferSize, PrintfFormatTrait<IntegerType>::format, min);
79 ASSERT_STREQ(buffer.data(), minStringData.data());
80
81 const IntegerType max = std::numeric_limits<IntegerType>::max();
82 CString maxStringData = String::number(max).latin1();
83 snprintf(buffer.data(), bufferSize, PrintfFormatTrait<IntegerType>::format, max);
84 ASSERT_STREQ(buffer.data(), maxStringData.data());
85}
86
87template<typename IntegerType>
88void testNumbers()
89{
90 const unsigned bufferSize = 256;
91 Vector<char, bufferSize> buffer;
92 buffer.resize(bufferSize);
93
94 for (int i = -100; i < 100; ++i) {
95 const IntegerType number = static_cast<IntegerType>(i);
96 CString numberStringData = String::number(number).latin1();
97 snprintf(buffer.data(), bufferSize, PrintfFormatTrait<IntegerType>::format, number);
98 ASSERT_STREQ(buffer.data(), numberStringData.data());
99 }
100}
101
102TEST(WTF, IntegerToStringConversionSignedIntegerBoundaries)
103{
104 testBoundaries<short>();
105 testBoundaries<int>();
106 testBoundaries<long>();
107 testBoundaries<long long>();
108}
109
110TEST(WTF, IntegerToStringConversionSignedIntegerRegularNumbers)
111{
112 testNumbers<short>();
113 testNumbers<int>();
114 testNumbers<long>();
115 testNumbers<long long>();
116}
117
118TEST(WTF, IntegerToStringConversionUnsignedIntegerBoundaries)
119{
120 testBoundaries<unsigned short>();
121 testBoundaries<unsigned int>();
122 testBoundaries<unsigned long>();
123 testBoundaries<unsigned long long>();
124}
125
126TEST(WTF, IntegerToStringConversionUnsignedIntegerRegularNumbers)
127{
128 testNumbers<unsigned short>();
129 testNumbers<unsigned int>();
130 testNumbers<unsigned long>();
131 testNumbers<unsigned long long>();
132}
133