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
TEST(file,ReadFileToString_ENOENT)29 TEST(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
TEST(file,ReadFileToString_success)37 TEST(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
TEST(file,WriteStringToFile)46 TEST(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
TEST(file,WriteStringToFile2)55 TEST(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
TEST(file,WriteStringToFd)71 TEST(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
TEST(file,ReadFully)83 TEST(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
TEST(file,WriteFully)99 TEST(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