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// Copyright (C) 2019 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 <chrono>
#include <string>
#include <thread>
#include <android-base/file.h>
#include <android-base/unique_fd.h>
#include <fs_mgr/file_wait.h>
#include <gtest/gtest.h>
using namespace std::literals;
using android::base::unique_fd;
using android::fs_mgr::WaitForFile;
using android::fs_mgr::WaitForFileDeleted;
class FileWaitTest : public ::testing::Test {
protected:
void SetUp() override {
const ::testing::TestInfo* tinfo = ::testing::UnitTest::GetInstance()->current_test_info();
test_file_ = temp_dir_.path + "/"s + tinfo->name();
}
void TearDown() override { unlink(test_file_.c_str()); }
TemporaryDir temp_dir_;
std::string test_file_;
};
TEST_F(FileWaitTest, FileExists) {
unique_fd fd(open(test_file_.c_str(), O_CREAT | O_TRUNC | O_RDWR, 0700));
ASSERT_GE(fd, 0);
ASSERT_TRUE(WaitForFile(test_file_, 500ms));
ASSERT_FALSE(WaitForFileDeleted(test_file_, 500ms));
}
TEST_F(FileWaitTest, FileDoesNotExist) {
ASSERT_FALSE(WaitForFile(test_file_, 500ms));
ASSERT_TRUE(WaitForFileDeleted(test_file_, 500ms));
}
TEST_F(FileWaitTest, CreateAsync) {
std::thread thread([this] {
std::this_thread::sleep_for(std::chrono::seconds(1));
unique_fd fd(open(test_file_.c_str(), O_CREAT | O_TRUNC | O_RDWR, 0700));
});
EXPECT_TRUE(WaitForFile(test_file_, 3s));
thread.join();
}
TEST_F(FileWaitTest, CreateOtherAsync) {
std::thread thread([this] {
std::this_thread::sleep_for(std::chrono::seconds(1));
unique_fd fd(open(test_file_.c_str(), O_CREAT | O_TRUNC | O_RDWR, 0700));
});
EXPECT_FALSE(WaitForFile(test_file_ + ".wontexist", 2s));
thread.join();
}
TEST_F(FileWaitTest, DeleteAsync) {
// Note: need to close the file, otherwise inotify considers it not deleted.
{
unique_fd fd(open(test_file_.c_str(), O_CREAT | O_TRUNC | O_RDWR, 0700));
ASSERT_GE(fd, 0);
}
std::thread thread([this] {
std::this_thread::sleep_for(std::chrono::seconds(1));
unlink(test_file_.c_str());
});
EXPECT_TRUE(WaitForFileDeleted(test_file_, 3s));
thread.join();
}
TEST_F(FileWaitTest, BadPath) {
ASSERT_FALSE(WaitForFile("/this/path/does/not/exist", 5ms));
EXPECT_EQ(errno, ENOENT);
}
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