1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "base/file.h"
18
19#include <gtest/gtest.h>
20
21#include <errno.h>
22#include <fcntl.h>
23#include <unistd.h>
24
25#include <string>
26
27#include "test_utils.h"
28
29TEST(file, ReadFileToString_ENOENT) {
30  std::string s("hello");
31  errno = 0;
32  ASSERT_FALSE(android::base::ReadFileToString("/proc/does-not-exist", &s));
33  EXPECT_EQ(ENOENT, errno);
34  EXPECT_EQ("", s);  // s was cleared.
35}
36
37TEST(file, ReadFileToString_success) {
38  std::string s("hello");
39  ASSERT_TRUE(android::base::ReadFileToString("/proc/version", &s)) << errno;
40  EXPECT_GT(s.length(), 6U);
41  EXPECT_EQ('\n', s[s.length() - 1]);
42  s[5] = 0;
43  EXPECT_STREQ("Linux", s.c_str());
44}
45
46TEST(file, WriteStringToFile) {
47  TemporaryFile tf;
48  ASSERT_TRUE(tf.fd != -1);
49  ASSERT_TRUE(android::base::WriteStringToFile("abc", tf.filename)) << errno;
50  std::string s;
51  ASSERT_TRUE(android::base::ReadFileToString(tf.filename, &s)) << errno;
52  EXPECT_EQ("abc", s);
53}
54
55TEST(file, WriteStringToFile2) {
56  TemporaryFile tf;
57  ASSERT_TRUE(tf.fd != -1);
58  ASSERT_TRUE(android::base::WriteStringToFile("abc", tf.filename, 0660,
59                                               getuid(), getgid()))
60      << errno;
61  struct stat sb;
62  ASSERT_EQ(0, stat(tf.filename, &sb));
63  ASSERT_EQ(0660U, static_cast<unsigned int>(sb.st_mode & ~S_IFMT));
64  ASSERT_EQ(getuid(), sb.st_uid);
65  ASSERT_EQ(getgid(), sb.st_gid);
66  std::string s;
67  ASSERT_TRUE(android::base::ReadFileToString(tf.filename, &s)) << errno;
68  EXPECT_EQ("abc", s);
69}
70
71TEST(file, WriteStringToFd) {
72  TemporaryFile tf;
73  ASSERT_TRUE(tf.fd != -1);
74  ASSERT_TRUE(android::base::WriteStringToFd("abc", tf.fd));
75
76  ASSERT_EQ(0, lseek(tf.fd, 0, SEEK_SET)) << errno;
77
78  std::string s;
79  ASSERT_TRUE(android::base::ReadFdToString(tf.fd, &s)) << errno;
80  EXPECT_EQ("abc", s);
81}
82
83TEST(file, ReadFully) {
84  int fd = open("/proc/version", O_RDONLY);
85  ASSERT_NE(-1, fd) << strerror(errno);
86
87  char buf[1024];
88  memset(buf, 0, sizeof(buf));
89  ASSERT_TRUE(android::base::ReadFully(fd, buf, 5));
90  ASSERT_STREQ("Linux", buf);
91
92  ASSERT_EQ(0, lseek(fd, 0, SEEK_SET)) << strerror(errno);
93
94  ASSERT_FALSE(android::base::ReadFully(fd, buf, sizeof(buf)));
95
96  close(fd);
97}
98
99TEST(file, WriteFully) {
100  TemporaryFile tf;
101  ASSERT_TRUE(tf.fd != -1);
102  ASSERT_TRUE(android::base::WriteFully(tf.fd, "abc", 3));
103  std::string s;
104  ASSERT_TRUE(android::base::ReadFileToString(tf.filename, &s)) << errno;
105  EXPECT_EQ("abc", s);
106}
107