1 /*
2 * Copyright (C) 2018 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 "perfetto/base/temp_file.h"
18
19 #include <sys/stat.h>
20 #include <unistd.h>
21
22 #include "gtest/gtest.h"
23
24 namespace perfetto {
25 namespace base {
26 namespace {
27
PathExists(const std::string & path)28 bool PathExists(const std::string& path) {
29 struct stat stat_buf;
30 return stat(path.c_str(), &stat_buf) == 0;
31 }
32
TEST(TempFileTest,Create)33 TEST(TempFileTest, Create) {
34 std::string path;
35 int fd;
36 {
37 TempFile tf = TempFile::Create();
38 path = tf.path();
39 fd = tf.fd();
40 ASSERT_NE("", path);
41 ASSERT_GE(fd, 0);
42 ASSERT_TRUE(PathExists(path));
43 ASSERT_GE(write(fd, "foo", 4), 0);
44
45 TempFile moved_tf(std::move(tf));
46 ASSERT_EQ("", tf.path());
47 ASSERT_EQ(-1, tf.fd());
48 ASSERT_EQ(path, moved_tf.path());
49 ASSERT_EQ(fd, moved_tf.fd());
50 ASSERT_GE(write(moved_tf.fd(), "foo", 4), 0);
51
52 TempFile moved_tf2 = std::move(moved_tf);
53 ASSERT_EQ("", moved_tf.path());
54 ASSERT_EQ(-1, moved_tf.fd());
55 ASSERT_EQ(path, moved_tf2.path());
56 ASSERT_EQ(fd, moved_tf2.fd());
57 ASSERT_GE(write(moved_tf2.fd(), "foo", 4), 0);
58 }
59
60 // The file should be deleted and closed now.
61 ASSERT_FALSE(PathExists(path));
62
63 ASSERT_EQ(-1, write(fd, "foo", 4));
64 }
65
TEST(TempFileTest,CreateUnlinked)66 TEST(TempFileTest, CreateUnlinked) {
67 int fd;
68 {
69 TempFile tf = TempFile::CreateUnlinked();
70 ASSERT_EQ("", tf.path());
71 fd = tf.fd();
72 ASSERT_GE(fd, 0);
73 ASSERT_GE(write(fd, "foo", 4), 0);
74 }
75 ASSERT_EQ(-1, write(fd, "foo", 4));
76 }
77
TEST(TempFileTest,ReleaseUnlinked)78 TEST(TempFileTest, ReleaseUnlinked) {
79 ScopedFile fd;
80 {
81 TempFile tf = TempFile::Create();
82 fd = tf.ReleaseFD();
83 }
84 ASSERT_GE(write(*fd, "foo", 4), 0);
85 }
86
TEST(TempFileTest,ReleaseLinked)87 TEST(TempFileTest, ReleaseLinked) {
88 ScopedFile fd;
89 std::string path;
90 {
91 TempFile tf = TempFile::CreateUnlinked();
92 path = tf.path();
93 fd = tf.ReleaseFD();
94 }
95
96 // The file should be unlinked from the filesystem.
97 ASSERT_FALSE(PathExists(path));
98
99 // But still open and writable.
100 ASSERT_GE(write(*fd, "foo", 4), 0);
101 }
102
TEST(TempFileTest,TempDir)103 TEST(TempFileTest, TempDir) {
104 std::string path;
105 {
106 TempDir td = TempDir::Create();
107 ASSERT_NE("", td.path());
108 ASSERT_TRUE(PathExists(td.path()));
109 path = td.path();
110 }
111 ASSERT_FALSE(PathExists(path));
112 }
113
114 } // namespace
115 } // namespace base
116 } // namespace perfetto
117