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
|
/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "android-base/file.h"
#include <gtest/gtest.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <string>
#include "android-base/test_utils.h"
TEST(file, ReadFileToString_ENOENT) {
std::string s("hello");
errno = 0;
ASSERT_FALSE(android::base::ReadFileToString("/proc/does-not-exist", &s));
EXPECT_EQ(ENOENT, errno);
EXPECT_EQ("", s); // s was cleared.
}
TEST(file, ReadFileToString_WriteStringToFile) {
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
ASSERT_TRUE(android::base::WriteStringToFile("abc", tf.path))
<< strerror(errno);
std::string s;
ASSERT_TRUE(android::base::ReadFileToString(tf.path, &s))
<< strerror(errno);
EXPECT_EQ("abc", s);
}
// WriteStringToFile2 is explicitly for setting Unix permissions, which make no
// sense on Windows.
#if !defined(_WIN32)
TEST(file, WriteStringToFile2) {
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
ASSERT_TRUE(android::base::WriteStringToFile("abc", tf.path, 0660,
getuid(), getgid()))
<< strerror(errno);
struct stat sb;
ASSERT_EQ(0, stat(tf.path, &sb));
ASSERT_EQ(0660U, static_cast<unsigned int>(sb.st_mode & ~S_IFMT));
ASSERT_EQ(getuid(), sb.st_uid);
ASSERT_EQ(getgid(), sb.st_gid);
std::string s;
ASSERT_TRUE(android::base::ReadFileToString(tf.path, &s))
<< strerror(errno);
EXPECT_EQ("abc", s);
}
#endif
TEST(file, WriteStringToFd) {
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
ASSERT_TRUE(android::base::WriteStringToFd("abc", tf.fd));
ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET)) << strerror(errno);
std::string s;
ASSERT_TRUE(android::base::ReadFdToString(tf.fd, &s)) << strerror(errno);
EXPECT_EQ("abc", s);
}
TEST(file, WriteFully) {
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
ASSERT_TRUE(android::base::WriteFully(tf.fd, "abc", 3));
ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET)) << strerror(errno);
std::string s;
s.resize(3);
ASSERT_TRUE(android::base::ReadFully(tf.fd, &s[0], s.size()))
<< strerror(errno);
EXPECT_EQ("abc", s);
ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET)) << strerror(errno);
s.resize(1024);
ASSERT_FALSE(android::base::ReadFully(tf.fd, &s[0], s.size()));
}
TEST(file, RemoveFileIfExist) {
TemporaryFile tf;
ASSERT_TRUE(tf.fd != -1);
close(tf.fd);
tf.fd = -1;
std::string err;
ASSERT_TRUE(android::base::RemoveFileIfExists(tf.path, &err)) << err;
ASSERT_TRUE(android::base::RemoveFileIfExists(tf.path));
TemporaryDir td;
ASSERT_FALSE(android::base::RemoveFileIfExists(td.path));
ASSERT_FALSE(android::base::RemoveFileIfExists(td.path, &err));
ASSERT_EQ("is not a regular or symbol link file", err);
}
TEST(file, Readlink) {
#if !defined(_WIN32)
// Linux doesn't allow empty symbolic links.
std::string min("x");
// ext2 and ext4 both have PAGE_SIZE limits.
std::string max(static_cast<size_t>(4096 - 1), 'x');
TemporaryDir td;
std::string min_path{std::string(td.path) + "/" + "min"};
std::string max_path{std::string(td.path) + "/" + "max"};
ASSERT_EQ(0, symlink(min.c_str(), min_path.c_str()));
ASSERT_EQ(0, symlink(max.c_str(), max_path.c_str()));
std::string result;
result = "wrong";
ASSERT_TRUE(android::base::Readlink(min_path, &result));
ASSERT_EQ(min, result);
result = "wrong";
ASSERT_TRUE(android::base::Readlink(max_path, &result));
ASSERT_EQ(max, result);
#endif
}
|
