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 28 bool PathExists(const std::string& path) { 29 struct stat stat_buf; 30 return stat(path.c_str(), &stat_buf) == 0; 31 } 32 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 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 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 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 } 102 103 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
