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 "wtf/StringExtras.h"
29 #include "wtf/text/CString.h"
30 #include "wtf/text/WTFString.h"
31 #include <gtest/gtest.h>
32 #include <limits>
33
34 namespace {
35
36 template<typename IntegerType> struct PrintfFormatTrait { static const char format[]; };
37
38 template<> struct PrintfFormatTrait<short> { static const char format[]; };
39 const char PrintfFormatTrait<short>::format[] = "%hd";
40
41 template<> struct PrintfFormatTrait<int> { static const char format[]; };
42 const char PrintfFormatTrait<int>::format[] = "%d";
43
44 template<> struct PrintfFormatTrait<long> { static const char format[]; };
45 const char PrintfFormatTrait<long>::format[] = "%ld";
46
47 template<> struct PrintfFormatTrait<long long> { static const char format[]; };
48 #if OS(WIN)
49 const char PrintfFormatTrait<long long>::format[] = "%I64i";
50 #else
51 const char PrintfFormatTrait<long long>::format[] = "%lli";
52 #endif // OS(WIN)
53
54 template<> struct PrintfFormatTrait<unsigned short> { static const char format[]; };
55 const char PrintfFormatTrait<unsigned short>::format[] = "%hu";
56
57 template<> struct PrintfFormatTrait<unsigned> { static const char format[]; };
58 const char PrintfFormatTrait<unsigned>::format[] = "%u";
59
60 template<> struct PrintfFormatTrait<unsigned long> { static const char format[]; };
61 const char PrintfFormatTrait<unsigned long>::format[] = "%lu";
62
63 template<> struct PrintfFormatTrait<unsigned long long> { static const char format[]; };
64 #if OS(WIN)
65 const char PrintfFormatTrait<unsigned long long>::format[] = "%I64u";
66 #else
67 const char PrintfFormatTrait<unsigned long long>::format[] = "%llu";
68 #endif // OS(WIN)
69
70
71 // FIXME: use snprintf from StringExtras.h
72 template<typename IntegerType>
testBoundaries()73 void testBoundaries()
74 {
75 const unsigned bufferSize = 256;
76 Vector<char, bufferSize> buffer;
77 buffer.resize(bufferSize);
78
79 const IntegerType min = std::numeric_limits<IntegerType>::min();
80 CString minStringData = String::number(min).latin1();
81 snprintf(buffer.data(), bufferSize, PrintfFormatTrait<IntegerType>::format, min);
82 EXPECT_STREQ(buffer.data(), minStringData.data());
83
84 const IntegerType max = std::numeric_limits<IntegerType>::max();
85 CString maxStringData = String::number(max).latin1();
86 snprintf(buffer.data(), bufferSize, PrintfFormatTrait<IntegerType>::format, max);
87 EXPECT_STREQ(buffer.data(), maxStringData.data());
88 }
89
90 template<typename IntegerType>
testNumbers()91 void testNumbers()
92 {
93 const unsigned bufferSize = 256;
94 Vector<char, bufferSize> buffer;
95 buffer.resize(bufferSize);
96
97 for (int i = -100; i < 100; ++i) {
98 const IntegerType number = static_cast<IntegerType>(i);
99 CString numberStringData = String::number(number).latin1();
100 snprintf(buffer.data(), bufferSize, PrintfFormatTrait<IntegerType>::format, number);
101 EXPECT_STREQ(buffer.data(), numberStringData.data());
102 }
103 }
104
TEST(StringExtraTest,IntegerToStringConversionSignedIntegerBoundaries)105 TEST(StringExtraTest, IntegerToStringConversionSignedIntegerBoundaries)
106 {
107 testBoundaries<short>();
108 testBoundaries<int>();
109 testBoundaries<long>();
110 testBoundaries<long long>();
111 }
112
TEST(StringExtraTest,IntegerToStringConversionSignedIntegerRegularNumbers)113 TEST(StringExtraTest, IntegerToStringConversionSignedIntegerRegularNumbers)
114 {
115 testNumbers<short>();
116 testNumbers<int>();
117 testNumbers<long>();
118 testNumbers<long long>();
119 }
120
TEST(StringExtraTest,IntegerToStringConversionUnsignedIntegerBoundaries)121 TEST(StringExtraTest, IntegerToStringConversionUnsignedIntegerBoundaries)
122 {
123 testBoundaries<unsigned short>();
124 testBoundaries<unsigned>();
125 testBoundaries<unsigned long>();
126 testBoundaries<unsigned long long>();
127 }
128
TEST(StringExtraTest,IntegerToStringConversionUnsignedIntegerRegularNumbers)129 TEST(StringExtraTest, IntegerToStringConversionUnsignedIntegerRegularNumbers)
130 {
131 testNumbers<unsigned short>();
132 testNumbers<unsigned>();
133 testNumbers<unsigned long>();
134 testNumbers<unsigned long long>();
135 }
136
137 } // namespace
138