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/*
* Copyright (C) 2024 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 <string>
#include <vector>
#include <cstdio>
#include <sys/stat.h>
#include "aconfig_storage/aconfig_storage_read_api.hpp"
#include "aconfig_storage/aconfig_storage_write_api.hpp"
#include <gtest/gtest.h>
#include <protos/aconfig_storage_metadata.pb.h>
#include <android-base/file.h>
#include <android-base/result.h>
using android::aconfig_storage_metadata::storage_files;
using namespace android::base;
namespace api = aconfig_storage;
namespace private_api = aconfig_storage::private_internal_api;
class AconfigStorageTest : public ::testing::Test {
protected:
Result<std::string> copy_to_rw_temp_file(std::string const& source_file) {
auto temp_file = std::string(std::tmpnam(nullptr));
auto content = std::string();
if (!ReadFileToString(source_file, &content)) {
return Error() << "failed to read file: " << source_file;
}
if (!WriteStringToFile(content, temp_file)) {
return Error() << "failed to copy file: " << source_file;
}
if (chmod(temp_file.c_str(),
S_IRUSR | S_IRGRP | S_IROTH | S_IWUSR | S_IWGRP | S_IWOTH) == -1) {
return Error() << "failed to chmod";
}
return temp_file;
}
Result<std::string> write_storage_location_pb_file(std::string const& flag_val) {
auto temp_file = std::tmpnam(nullptr);
auto proto = storage_files();
auto* info = proto.add_files();
info->set_version(0);
info->set_container("system");
info->set_package_map("some_package.map");
info->set_flag_map("some_flag.map");
info->set_flag_val(flag_val);
info->set_timestamp(12345);
auto content = std::string();
proto.SerializeToString(&content);
if (!WriteStringToFile(content, temp_file)) {
return Error() << "failed to write storage records pb file";
}
return temp_file;
}
void SetUp() override {
auto const test_dir = android::base::GetExecutableDirectory();
flag_val = *copy_to_rw_temp_file(test_dir + "/flag.val");
storage_record_pb = *write_storage_location_pb_file(flag_val);
}
void TearDown() override {
std::remove(flag_val.c_str());
std::remove(storage_record_pb.c_str());
}
std::string flag_val;
std::string storage_record_pb;
};
/// Negative test to lock down the error when mapping none exist storage files
TEST_F(AconfigStorageTest, test_none_exist_storage_file_mapping) {
auto mapped_file_result = private_api::get_mapped_flag_value_file_impl(
storage_record_pb, "vendor");
ASSERT_FALSE(mapped_file_result.ok());
ASSERT_EQ(mapped_file_result.error().message(),
"Unable to find storage files for container vendor");
}
/// Negative test to lock down the error when mapping a non writeable storage file
TEST_F(AconfigStorageTest, test_non_writable_storage_file_mapping) {
ASSERT_TRUE(chmod(flag_val.c_str(), S_IRUSR | S_IRGRP | S_IROTH) != -1);
auto mapped_file_result = private_api::get_mapped_flag_value_file_impl(
storage_record_pb, "system");
ASSERT_FALSE(mapped_file_result.ok());
ASSERT_EQ(mapped_file_result.error().message(), "cannot map nonwriteable file");
}
/// Test to lock down storage flag value update api
TEST_F(AconfigStorageTest, test_boolean_flag_value_update) {
auto mapped_file_result = private_api::get_mapped_flag_value_file_impl(
storage_record_pb, "system");
ASSERT_TRUE(mapped_file_result.ok());
auto mapped_file = *mapped_file_result;
for (int offset = 0; offset < 8; ++offset) {
auto update_result = api::set_boolean_flag_value(mapped_file, offset, true);
ASSERT_TRUE(update_result.ok());
auto ro_mapped_file = api::MappedStorageFile();
ro_mapped_file.file_ptr = mapped_file.file_ptr;
ro_mapped_file.file_size = mapped_file.file_size;
auto value = api::get_boolean_flag_value(ro_mapped_file, offset);
ASSERT_TRUE(value.ok());
ASSERT_TRUE(*value);
}
}
/// Negative test to lock down the error when querying flag value out of range
TEST_F(AconfigStorageTest, test_invalid_boolean_flag_value_update) {
auto mapped_file_result = private_api::get_mapped_flag_value_file_impl(
storage_record_pb, "system");
ASSERT_TRUE(mapped_file_result.ok());
auto mapped_file = *mapped_file_result;
auto update_result = api::set_boolean_flag_value(mapped_file, 8, true);
ASSERT_FALSE(update_result.ok());
ASSERT_EQ(update_result.error().message(),
std::string("InvalidStorageFileOffset(Flag value offset goes beyond the end of the file.)"));
}
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