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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <errno.h>
#include "base/basictypes.h"
#include "base/stringprintf.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace base {
namespace {
// A helper for the StringAppendV test that follows.
//
// Just forwards its args to StringAppendV.
static void StringAppendVTestHelper(std::string* out, const char* format, ...) {
va_list ap;
va_start(ap, format);
StringAppendV(out, format, ap);
va_end(ap);
}
} // namespace
TEST(StringPrintfTest, StringPrintfEmpty) {
EXPECT_EQ("", StringPrintf("%s", ""));
}
TEST(StringPrintfTest, StringPrintfMisc) {
EXPECT_EQ("123hello w", StringPrintf("%3d%2s %1c", 123, "hello", 'w'));
#if !defined(OS_ANDROID)
EXPECT_EQ(L"123hello w", StringPrintf(L"%3d%2ls %1lc", 123, L"hello", 'w'));
#endif
}
TEST(StringPrintfTest, StringAppendfEmptyString) {
std::string value("Hello");
StringAppendF(&value, "%s", "");
EXPECT_EQ("Hello", value);
#if !defined(OS_ANDROID)
std::wstring valuew(L"Hello");
StringAppendF(&valuew, L"%ls", L"");
EXPECT_EQ(L"Hello", valuew);
#endif
}
TEST(StringPrintfTest, StringAppendfString) {
std::string value("Hello");
StringAppendF(&value, " %s", "World");
EXPECT_EQ("Hello World", value);
#if !defined(OS_ANDROID)
std::wstring valuew(L"Hello");
StringAppendF(&valuew, L" %ls", L"World");
EXPECT_EQ(L"Hello World", valuew);
#endif
}
TEST(StringPrintfTest, StringAppendfInt) {
std::string value("Hello");
StringAppendF(&value, " %d", 123);
EXPECT_EQ("Hello 123", value);
#if !defined(OS_ANDROID)
std::wstring valuew(L"Hello");
StringAppendF(&valuew, L" %d", 123);
EXPECT_EQ(L"Hello 123", valuew);
#endif
}
// Make sure that lengths exactly around the initial buffer size are handled
// correctly.
TEST(StringPrintfTest, StringPrintfBounds) {
const int kSrcLen = 1026;
char src[kSrcLen];
for (size_t i = 0; i < arraysize(src); i++)
src[i] = 'A';
wchar_t srcw[kSrcLen];
for (size_t i = 0; i < arraysize(srcw); i++)
srcw[i] = 'A';
for (int i = 1; i < 3; i++) {
src[kSrcLen - i] = 0;
std::string out;
SStringPrintf(&out, "%s", src);
EXPECT_STREQ(src, out.c_str());
#if !defined(OS_ANDROID)
srcw[kSrcLen - i] = 0;
std::wstring outw;
SStringPrintf(&outw, L"%ls", srcw);
EXPECT_STREQ(srcw, outw.c_str());
#endif
}
}
// Test very large sprintfs that will cause the buffer to grow.
TEST(StringPrintfTest, Grow) {
char src[1026];
for (size_t i = 0; i < arraysize(src); i++)
src[i] = 'A';
src[1025] = 0;
const char* fmt = "%sB%sB%sB%sB%sB%sB%s";
std::string out;
SStringPrintf(&out, fmt, src, src, src, src, src, src, src);
const int kRefSize = 320000;
char* ref = new char[kRefSize];
#if defined(OS_WIN)
sprintf_s(ref, kRefSize, fmt, src, src, src, src, src, src, src);
#elif defined(OS_POSIX)
snprintf(ref, kRefSize, fmt, src, src, src, src, src, src, src);
#endif
EXPECT_STREQ(ref, out.c_str());
delete[] ref;
}
TEST(StringPrintfTest, StringAppendV) {
std::string out;
StringAppendVTestHelper(&out, "%d foo %s", 1, "bar");
EXPECT_EQ("1 foo bar", out);
}
// Test the boundary condition for the size of the string_util's
// internal buffer.
TEST(StringPrintfTest, GrowBoundary) {
const int string_util_buf_len = 1024;
// Our buffer should be one larger than the size of StringAppendVT's stack
// buffer.
const int buf_len = string_util_buf_len + 1;
char src[buf_len + 1]; // Need extra one for NULL-terminator.
for (int i = 0; i < buf_len; ++i)
src[i] = 'a';
src[buf_len] = 0;
std::string out;
SStringPrintf(&out, "%s", src);
EXPECT_STREQ(src, out.c_str());
}
// TODO(evanm): what's the proper cross-platform test here?
#if defined(OS_WIN)
// sprintf in Visual Studio fails when given U+FFFF. This tests that the
// failure case is gracefuly handled.
TEST(StringPrintfTest, Invalid) {
wchar_t invalid[2];
invalid[0] = 0xffff;
invalid[1] = 0;
std::wstring out;
SStringPrintf(&out, L"%ls", invalid);
EXPECT_STREQ(L"", out.c_str());
}
#endif
// Test that the positional parameters work.
TEST(StringPrintfTest, PositionalParameters) {
std::string out;
SStringPrintf(&out, "%1$s %1$s", "test");
EXPECT_STREQ("test test", out.c_str());
#if defined(OS_WIN)
std::wstring wout;
SStringPrintf(&wout, L"%1$ls %1$ls", L"test");
EXPECT_STREQ(L"test test", wout.c_str());
#endif
}
// Test that StringPrintf and StringAppendV do not change errno.
TEST(StringPrintfTest, StringPrintfErrno) {
errno = 1;
EXPECT_EQ("", StringPrintf("%s", ""));
EXPECT_EQ(1, errno);
std::string out;
StringAppendVTestHelper(&out, "%d foo %s", 1, "bar");
EXPECT_EQ(1, errno);
}
} // namespace base
|
