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/*
* Copyright 2022 Google LLC
*
* 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 "fcp/client/cache/temp_files.h"
#include <filesystem>
#include <fstream>
#include <functional>
#include <string>
#include <utility>
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include "absl/status/statusor.h"
#include "fcp/client/test_helpers.h"
#include "fcp/testing/testing.h"
namespace fcp {
namespace client {
namespace cache {
namespace {
int CountFilesInDir(const std::filesystem::path& dir) {
int num_files = 0;
for ([[maybe_unused]] auto const& unused :
std::filesystem::directory_iterator{dir}) {
num_files++;
}
return num_files;
}
class TempFilesTest : public testing::Test {
protected:
void SetUp() override {
root_dir_ = testing::TempDir();
std::filesystem::path root_dir(root_dir_);
temp_file_dir_ =
root_dir / TempFiles::kParentDir / TempFiles::kTempFilesDir;
}
void TearDown() override {
std::filesystem::remove_all(std::filesystem::path(root_dir_));
}
testing::StrictMock<MockLogManager> log_manager_;
std::string root_dir_;
std::filesystem::path temp_file_dir_;
};
TEST_F(TempFilesTest, FailToCreateParentDirectory) {
ASSERT_THAT(TempFiles::Create("/proc/0", &log_manager_), IsCode(INTERNAL));
}
TEST_F(TempFilesTest, InvalidRelativePath) {
ASSERT_THAT(TempFiles::Create("relative/cache", &log_manager_),
IsCode(INVALID_ARGUMENT));
}
TEST_F(TempFilesTest, SuccessfulInitialization) {
ASSERT_OK(TempFiles::Create(root_dir_, &log_manager_));
}
TEST_F(TempFilesTest, CreateTempFile) {
auto temp_files = TempFiles::Create(root_dir_, &log_manager_);
ASSERT_OK(temp_files);
auto temp_file = (*temp_files)->CreateTempFile("stefan", ".cool");
ASSERT_OK(temp_file);
}
TEST_F(TempFilesTest, CreateSomeTempFilesThenDeleteInDtor) {
auto temp_files = TempFiles::Create(root_dir_, &log_manager_);
ASSERT_OK(temp_files);
int num_temp_files = 4;
for (int i = 0; i < num_temp_files; i++) {
ASSERT_OK((*temp_files)->CreateTempFile("stefan", ".cool"));
}
ASSERT_EQ(num_temp_files, CountFilesInDir(temp_file_dir_));
temp_files->reset(); // deleting temp_files should empty the directory.
ASSERT_EQ(0, CountFilesInDir(temp_file_dir_));
}
TEST_F(TempFilesTest, CreatingTempFilesDeletesExistingFiles) {
std::filesystem::path root_dir(root_dir_);
ASSERT_TRUE(std::filesystem::create_directories(temp_file_dir_));
int num_existing_temp_files = 10;
for (int i = 0; i < num_existing_temp_files; i++) {
std::filesystem::path temp_file_path =
temp_file_dir_ / absl::StrCat("temp", i);
std::ofstream{temp_file_path};
}
ASSERT_EQ(num_existing_temp_files, CountFilesInDir(temp_file_dir_));
auto temp_files = TempFiles::Create(root_dir_, &log_manager_);
ASSERT_OK(temp_files);
ASSERT_EQ(0, CountFilesInDir(temp_file_dir_));
}
TEST_F(TempFilesTest, FailToDeleteTempFilesLogs) {
// Create a temp file in the temp dir
auto temp_files = TempFiles::Create(root_dir_, &log_manager_);
ASSERT_OK(temp_files);
ASSERT_OK((*temp_files)->CreateTempFile("stefan", ".cool"));
ASSERT_OK((*temp_files)->CreateTempFile("stefan", ".cool"));
ASSERT_OK((*temp_files)->CreateTempFile("stefan", ".cool"));
ASSERT_EQ(3, CountFilesInDir(temp_file_dir_));
// Delete the temp file dir and root dir, which should cause the dtor to fail
// because we deleted the directories out from underneath it.
std::filesystem::remove_all(std::filesystem::path(root_dir_));
EXPECT_CALL(log_manager_,
LogDiag(ProdDiagCode::TEMP_FILES_NATIVE_FAILED_TO_DELETE));
temp_files->reset();
}
} // namespace
} // namespace cache
} // namespace client
} // namespace fcp
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